How long is the flight from San Francisco to London?

Airlines like Scandinavian Airlines, TAP AIR PORTUGAL, and SWISS fly from San Francisco to London in about 14h 20m. The time it takes to get you to your destination can typically vary by up to 18h 55m. There are 5374 mi between San Francisco and London. This flight may include one or multiple stops.

What are the cheapest airlines flying from San Francisco to London round-trip?

Our cheapest airline available from San Francisco to London is Scandinavian Airlines. Our recent data shows that you can find tickets from as low as £350 on this airline. Additional options worth looking into are Virgin Atlantic and KLM, starting at £362 and £364 round-trip. Scandinavian Airlines is currently priced 36% below the average price you’ll pay for this route.

What are the cheapest airlines to fly from San Francisco to London one-way?

For one-way options, check prices for Delta. According to our data, you can fly for as low as £281. Users have also found prices from £281 and £285 on United Airlines and American Airlines, respectively.

In terms of precipitation, rainfall in London ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

What are the most popular routes from San Francisco to London?

While some choose either San Francisco - London Gatwick or San Francisco - London City, San Francisco - London Heathrow is the most popular route from San Francisco to London.

What are the cheapest flights from San Francisco to London?

Looking at all options, your cheapest flight can be booked for £265. While the most popular route (San Francisco - London Heathrow) can be booked for £324 on average, our data indicates £1,361 when flying from San Francisco to London.

What are the most reliable airlines from San Francisco to London?

Before booking your flight to London from San Francisco, check out the most reliable airlines to get you to your destination on time: Aeromexico (95%), KLM (93%), Air France( 93%).

What are the most popular airlines that fly from San Francisco to London?

Before booking your flight from San Francisco to London check out the most popular airlines for this route: Air Canada, British Airways or Iberia.

What airport do you fly from for flights from San Francisco to London?

Located just 11.8 mi from the city center, San Francisco is the airport most travelers will use when flying to London from San Francisco. Booking flights from San Francisco (SFO) to London should be relatively easy as there are 42 daily outbound flights to London from 9 different airlines.

Can I find deals for flights from San Francisco to London that include hotel bookings?

Yes. In addition to deals on San Francisco to London flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from San Francisco to London?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Francisco to London.

Can I find deals for business class flights from San Francisco to London?

Yes. Cheapflights offers flight deals from San Francisco to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£279+ Flights from San Francisco to London

Q: How much does it cost for a return flight from San Francisco to London?

Airfare is below average for this route at the moment. San Francisco to London flights typically cost between £445 and £547 in October. The cheapest return flight price found within the last 3 days was £381 on Multiple Airlines (22 Oct-29 Oct).

Cheapflights Tip: The best prices from San Francisco to London are usually found in October or September, booked 38 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

Cheap flight deals from San Francisco to London

Round-trip from	£381
One-way from	£279
Popular in	June
Cheapest in	October
Average price	£486
Good round-trip deal	£466 or less
Good one-way deal	£298 or less

22/10-29/10
4 total stops
46h 55m total
San Francisco to London

Search Deals

TAP AIR PORTUGAL
22/9
1 total stop
33h 25m total
San Francisco to London

Search Deals

Highest demand for flights based on searches. 16% potential increase in price (£80 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (£15 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2025

Search Deals

Price to beat on a round-trip flight from San Francisco to London (LON).

Search Deals

Price to beat on a one-way flight from San Francisco to London (LON).

Search Deals

Find flight deals from San Francisco to London

Cheapest flights from San Francisco to London
Explore the most affordable flight options available from San Francisco to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 September 2025.

Wed 22/1008:30SFO - STN

2 stops19h 20mMultiple Airlines

Wed 29/1020:55STN - SFO

2 stops27h 35mMultiple Airlines

Deal found 16/9£381

Wed 5/1108:25SFO - STN

2 stops25h 35mMultiple Airlines

Wed 12/1107:40STN - SFO

2 stops21h 42mMultiple Airlines

Deal found 15/9£382

Wed 15/1011:35SFO - STN

3 stops24h 25mMultiple Airlines

Wed 22/1022:10STN - SFO

2 stops29h 41mMultiple Airlines

Deal found 15/9£384

Mon 29/923:45SFO - LHR

1 stop22h 45mMultiple Airlines

Wed 15/1008:40LHR - SFO

1 stop15h 30mMultiple Airlines

Deal found 17/9£384

Wed 22/1008:30SFO - STN

2 stops27h 30mMultiple Airlines

Mon 27/1021:20STN - SFO

2 stops27h 10mMultiple Airlines

Deal found 16/9£385

Tue 21/1008:30SFO - STN

2 stops19h 30mMultiple Airlines

Wed 29/1005:55STN - SFO

2 stops21h 40mMultiple Airlines

Deal found 15/9£385

Tue 14/1008:30SFO - LTN

2 stops19h 50mMultiple Airlines

Wed 22/1018:25LTN - SFO

2 stops29h 45mMultiple Airlines

Deal found 15/9£385

Sun 2/1108:25SFO - STN

2 stops21h 05mMultiple Airlines

Tue 11/1107:40STN - SFO

2 stops21h 42mMultiple Airlines

Deal found 15/9£387

Wed 5/1108:25SFO - LTN

2 stops29h 55mMultiple Airlines

Wed 12/1117:00LTN - SFO

2 stops31h 30mMultiple Airlines

Deal found 16/9£387

Wed 26/1108:25SFO - LGW

2 stops29h 15mMultiple Airlines

Tue 2/1213:10LGW - SFO

2 stops35h 20mMultiple Airlines

Deal found 14/9£388

Tue 21/1007:05SFO - LHR

2 stops18h 30mScandinavian Airlines

Thu 30/1010:20LHR - SFO

1 stop16h 05mScandinavian Airlines

Deal found 16/9£388

Mon 6/1008:40SFO - STN

2 stops19h 45mMultiple Airlines

Tue 14/1022:05STN - SFO

3 stops33h 03mMultiple Airlines

Deal found 16/9£388

Best flights from San Francisco to London
Discover carefully curated flight deals from San Francisco to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 18 September 2025.

Tue 21/1007:05SFO - LHR

2 stops18h 30mScandinavian Airlines

Thu 30/1007:05LHR - SFO

2 stops19h 20mScandinavian Airlines

Deal found 16/9£390

Tue 21/1008:40SFO - STN

2 stops28h 20mMultiple Airlines

Thu 30/1020:05STN - SFO

2 stops28h 25mMultiple Airlines

Deal found 16/9£391

Wed 15/1016:05SFO - LHR

Nonstop10h 20mUnited Airlines

Wed 29/1012:05LHR - SFO

1 stop36h 25mUnited Airlines

Deal found 15/9£417

Mon 8/1216:30SFO - LHR

Nonstop10h 10mDelta

Tue 16/1206:30LHR - SFO

1 stop13h 20mDelta

Deal found 15/9£426

Wed 11/216:35SFO - LGW

1 stop33h 15mTAP AIR PORTUGAL

Sun 15/221:25LGW - SFO

2 stops25h 10mTAP AIR PORTUGAL

Deal found 17/9£437

Sun 5/1019:30SFO - LGW

1 stop14h 20mSWISS

Tue 21/1018:35LGW - SFO

1 stop29h 35mSWISS

Deal found 17/9£466

Mon 6/1013:45SFO - LCY

1 stop18h 55mVirgin Atlantic

Mon 13/1020:10LCY - SFO

1 stop23h 35mVirgin Atlantic

Deal found 16/9£467

Thu 30/1021:30SFO - LHR

2 stops38h 00mScandinavian Airlines

Sun 2/1117:00LHR - SFO

1 stop29h 35mScandinavian Airlines

Deal found 16/9£391

Wed 5/1108:25SFO - LTN

2 stops29h 55mMultiple Airlines

Wed 12/1117:00LTN - SFO

2 stops31h 30mMultiple Airlines

Deal found 18/9£399

Tue 3/212:50SFO - LHR

Nonstop10h 35mUnited Airlines

Tue 10/209:00LHR - SFO

1 stop15h 30mUnited Airlines

Deal found 15/9£417

Sun 28/921:20SFO - LHR

Nonstop10h 20mDelta

Tue 14/1006:30LHR - SFO

1 stop13h 15mDelta

Deal found 16/9£426

Mon 16/207:00SFO - LHR

2 stops18h 20mScandinavian Airlines

Fri 20/206:40LHR - SFO

1 stop15h 55mScandinavian Airlines

Deal found 17/9£392

Sat 29/1116:35SFO - LGW

1 stop33h 15mTAP AIR PORTUGAL

Sat 6/1210:10LGW - SFO

2 stops60h 25mTAP AIR PORTUGAL

Deal found 15/9£444

Tue 7/1011:35SFO - STN

3 stops26h 10mMultiple Airlines

Tue 14/1022:05STN - SFO

2 stops26h 05mMultiple Airlines

Deal found 16/9£404

Sun 5/1013:45SFO - LCY

1 stop19h 35mVirgin Atlantic

Thu 4/1220:05LCY - SFO

1 stop23h 45mVirgin Atlantic

Deal found 17/9£467

Sun 7/1216:30SFO - LHR

Nonstop10h 10mDelta

Tue 16/1206:30LHR - SFO

1 stop13h 20mDelta

Deal found 16/9£426

Tue 28/1013:50SFO - LHR

Nonstop10h 35mUnited Airlines

Mon 3/1113:50LHR - SFO

1 stop33h 00mUnited Airlines

Deal found 16/9£427

Mon 9/316:15SFO - LHR

2 stops18h 25mScandinavian Airlines

Sun 22/319:30LHR - SFO

1 stop27h 05mScandinavian Airlines

Deal found 15/9£399

Mon 29/908:40SFO - STN

2 stops19h 45mMultiple Airlines

Mon 6/1016:35STN - SFO

2 stops28h 05mMultiple Airlines

Deal found 17/9£406

Wed 22/1005:55SFO - LCY

2 stops17h 20mVirgin Atlantic

Mon 27/1020:05LCY - SFO

1 stop23h 45mVirgin Atlantic

Deal found 14/9£470

Mon 15/1219:25SFO - LGW

1 stop14h 25mSWISS

Tue 23/1218:40LGW - SFO

1 stop29h 50mSWISS

Deal found 17/9£525

Tue 14/1016:20SFO - LGW

1 stop33h 20mTAP AIR PORTUGAL

Tue 21/1012:10LGW - SFO

2 stops34h 25mTAP AIR PORTUGAL

Deal found 17/9£478

Wed 11/313:00SFO - LHR

2 stops25h 40mScandinavian Airlines

Wed 18/319:50LHR - SFO

2 stops26h 45mScandinavian Airlines

Deal found 17/9£402

Wed 5/1108:25SFO - STN

2 stops28h 30mMultiple Airlines

Mon 10/1108:40STN - SFO

2 stops20h 42mMultiple Airlines

Deal found 17/9£418

Tue 4/1105:55SFO - LCY

2 stops18h 15mVirgin Atlantic

Tue 11/1120:05LCY - SFO

1 stop23h 45mVirgin Atlantic

Deal found 16/9£471

Mon 2/216:35SFO - LGW

2 stops20h 00mTAP AIR PORTUGAL

Sun 15/221:25LGW - SFO

2 stops25h 10mTAP AIR PORTUGAL

Deal found 15/9£483

Thu 30/1021:30SFO - STN

2 stops18h 50mMultiple Airlines

Thu 6/1116:30STN - SFO

2 stops30h 05mMultiple Airlines

Deal found 15/9£418

Sun 12/1013:45SFO - LCY

1 stop19h 35mVirgin Atlantic

Tue 28/1020:05LCY - SFO

2 stops28h 40mVirgin Atlantic

Deal found 17/9£475

Mon 17/1116:35SFO - LGW

2 stops20h 00mTAP AIR PORTUGAL

Tue 2/1221:20LGW - SFO

2 stops25h 10mTAP AIR PORTUGAL

Deal found 17/9£491

Mon 13/1015:05SFO - STN

2 stops22h 35mMultiple Airlines

Mon 20/1010:30STN - SFO

2 stops33h 15mMultiple Airlines

Deal found 15/9£420

Direct flights from San Francisco to London
Explore direct flight options from San Francisco to London based on user searches, and compare prices and availability for your desired travel dates. Data last updated 18 September 2025.

Sun 28/913:05SFO - LHR

Nonstop10h 20mUnited Airlines

Tue 14/1016:15LHR - SFO

Nonstop11h 05mUnited Airlines

Deal found 16/9£410

Sun 28/921:20SFO - LHR

Nonstop10h 20mVirgin Atlantic

Tue 14/1016:25LHR - SFO

Nonstop11h 05mVirgin Atlantic

Deal found 16/9£416

Sun 12/1021:20SFO - LHR

Nonstop10h 20mVirgin Atlantic

Tue 28/1011:40LHR - SFO

Nonstop11h 00mVirgin Atlantic

Deal found 17/9£417

Wed 5/1120:40SFO - LHR

Nonstop10h 30mBritish Airways

Wed 12/1111:45LHR - SFO

Nonstop11h 15mBritish Airways

Deal found 15/9£426

Wed 15/1016:30SFO - LHR

Nonstop10h 25mBritish Airways

Tue 21/1014:15LHR - SFO

Nonstop11h 10mBritish Airways

Deal found 16/9£426

Tue 14/1016:30SFO - LHR

Nonstop10h 25mBritish Airways

Tue 21/1010:45LHR - SFO

Nonstop11h 05mBritish Airways

Deal found 16/9£429

Tue 14/1016:05SFO - LHR

Nonstop10h 20mUnited Airlines

Fri 24/1012:20LHR - SFO

Nonstop11h 05mUnited Airlines

Deal found 15/9£430

Sun 28/913:05SFO - LHR

Nonstop10h 20mUnited Airlines

Fri 10/1010:35LHR - SFO

Nonstop11h 05mUnited Airlines

Deal found 16/9£431

Last-minute flights from San Francisco to London
Discover last-minute flight deals from San Francisco to London. Data last updated 18 September 2025 and is based on user searches.

Mon 29/923:45SFO - LHR

1 stop22h 45mMultiple Airlines

Wed 15/1008:40LHR - SFO

1 stop15h 30mMultiple Airlines

Deal found 17/9£384

Mon 6/1008:40SFO - STN

2 stops19h 45mMultiple Airlines

Tue 14/1022:05STN - SFO

3 stops33h 03mMultiple Airlines

Deal found 16/9£388

Sun 12/1016:35SFO - LHR

1 stop12h 45mMultiple Airlines

Tue 28/1011:10LHR - SFO

1 stop16h 25mMultiple Airlines

Deal found 17/9£389

Tue 14/1016:20SFO - LGW

2 stops20h 05mTAP AIR PORTUGAL

Tue 21/1016:25LGW - SFO

1 stop30h 10mTAP AIR PORTUGAL

Deal found 16/9£393

Wed 15/1011:35SFO - STN

3 stops24h 25mMultiple Airlines

Wed 22/1022:10STN - SFO

2 stops29h 41mMultiple Airlines

Deal found 15/9£384

Tue 21/1008:30SFO - STN

2 stops19h 30mMultiple Airlines

Wed 29/1005:55STN - SFO

2 stops21h 40mMultiple Airlines

Deal found 15/9£385

Tue 21/1007:05SFO - LHR

2 stops18h 30mScandinavian Airlines

Thu 30/1010:20LHR - SFO

1 stop16h 05mScandinavian Airlines

Deal found 16/9£388

Tue 21/1008:40SFO - STN

2 stops28h 20mMultiple Airlines

Thu 30/1020:05STN - SFO

2 stops28h 25mMultiple Airlines

Deal found 16/9£391

Wed 22/1008:30SFO - STN

2 stops19h 20mMultiple Airlines

Wed 29/1020:55STN - SFO

2 stops27h 35mMultiple Airlines

Deal found 16/9£381

Wed 22/1008:30SFO - STN

2 stops27h 30mMultiple Airlines

Mon 27/1021:20STN - SFO

2 stops27h 10mMultiple Airlines

Deal found 16/9£385

Mon 27/1015:30SFO - LHR

2 stops19h 10mScandinavian Airlines

Mon 10/1106:40LHR - SFO

1 stop15h 55mScandinavian Airlines

Deal found 16/9£391

Thu 30/1021:30SFO - LHR

2 stops38h 00mScandinavian Airlines

Sun 2/1117:00LHR - SFO

1 stop29h 35mScandinavian Airlines

Deal found 15/9£391

One-way flights from San Francisco to London
Search for one-way flight options from San Francisco to London. Find affordable one-way fares based on user searches. Data last updated 18 September 2025.

Mon 22/916:20SFO - LGW

1 stop33h 25mTAP AIR PORTUGAL

Deal found 16/9£279

Mon 10/1119:55SFO - SEN

1 stop30h 05mMultiple Airlines

Deal found 15/9£279

Wed 1/1016:30SFO - LHR

Nonstop10h 25mBritish Airways

Deal found 15/9£279

Mon 13/1020:30SFO - LTN

1 stop17h 45mMultiple Airlines

Deal found 16/9£279

Sun 28/920:10SFO - LCY

3 stops51h 45mMultiple Airlines

Deal found 16/9£280

Fri 10/1007:10SFO - LGW

3 stops30h 15mMultiple Airlines

Deal found 16/9£280

Mon 16/216:35SFO - STN

3 stops30h 40mMultiple Airlines

Deal found 16/9£280

Tue 23/919:20SFO - LHR

Nonstop10h 25mBritish Airways

Deal found 16/9£280

Sun 2/1110:28SFO - LTN

2 stops41h 37mMultiple Airlines

Deal found 16/9£280

Wed 26/1116:35SFO - LCY

2 stops39h 35mMultiple Airlines

Deal found 16/9£281

Mon 29/1216:35SFO - SEN

2 stops33h 25mMultiple Airlines

Deal found 16/9£281

Mon 8/1221:59SFO - STN

3 stops30h 41mMultiple Airlines

Deal found 15/9£281

Cheapflights Fare Finder

Use the filters below to find and compare flights from San Francisco to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Tue 21/10

07:05-09:35

2 stops18h 30m

London Heathrow

Thu 30/10

07:05-19:25

2 stops19h 20m

£390

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Thu 30/10

21:30-18:30

2 stops38h 00m

London Heathrow

Sun 2/11

17:00-14:35

1 stop29h 35m

£391

San FranciscoLondon

SFO - STN

SFOSTN

San Francisco

Tue 21/10

08:40-21:00

2 stops28h 20m

London Stansted

Thu 30/10

20:05-17:30

2 stops28h 25m

£391

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Mon 16/2

07:00-09:20

2 stops18h 20m

London Heathrow

Fri 20/2

06:40-14:35

1 stop15h 55m

£392

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Mon 9/3

16:15-17:40

2 stops18h 25m

London Heathrow

Sun 22/3

19:30-15:35

1 stop27h 05m

£399

San FranciscoLondon

SFO - LTN

SFOLTN

San Francisco

Wed 5/11

08:25-22:20

2 stops29h 55m

London Luton

Wed 12/11

17:00-16:30

2 stops31h 30m

£399

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Wed 11/3

13:00-21:40

2 stops25h 40m

London Heathrow

Wed 18/3

19:50-15:35

2 stops26h 45m

£402

San FranciscoLondon

SFO - STN

SFOSTN

San Francisco

Tue 7/10

11:35-21:45

3 stops26h 10m

London Stansted

Tue 14/10

22:05-16:10

2 stops26h 05m

£404

San FranciscoLondon

SFO - STN

SFOSTN

San Francisco

Mon 29/9

08:40-12:25

2 stops19h 45m

London Stansted

Mon 6/10

16:35-12:40

2 stops28h 05m

£406

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Wed 15/10

16:05-10:25

Nonstop10h 20m

London Heathrow

Wed 29/10

12:05-17:30

1 stop36h 25m

£417

Flights are sorted by cheapest return flights first.

Deals found on 15/9

Showing 1-10 of 60 results

...

Best time to book a flight from San Francisco to London

Have a flexible travel schedule? Discover the best time to fly to London from San Francisco with our price prediction graph.

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from San Francisco to London

How far ahead should I book a flight from San Francisco to London?

The price you pay for your flight from San Francisco to London may vary depending on when you book. For the best chance of a lower fare, look to book 38 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from San Francisco to London?

Currently, January is the cheapest month in which you can book a flight from San Francisco to London (average of £112). Flying from San Francisco to London in August is currently the most expensive (average of £164). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SFO to LON?

When flying from San Francisco to London, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 33% versus a flight at midday.

What is the cheapest day to fly from San Francisco to London?

Travellers seeking maximum savings on their San Francisco to London flight should consider departing on Tuesday evenings when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from San Francisco to London

The most flights from SFO to LON are scheduled on a Monday (42 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (42 on average).

How much does it cost for a return flight from San Francisco to London?

What’s the top stopover airport for flights from San Francisco to London?

Copenhagen (CPH) – chosen by Cheapflights users on 48% of one-stop itineraries from San Francisco to London on Cheapflights.

What’s the cheapest stopover airport for flights from San Francisco to London?

Copenhagen (CPH) is the most affordable one-stop option, with an average return flight price of £389.

What’s the fastest stopover option from San Francisco to London?

Flights via Salt Lake City (SLC) have the shortest average one-way travel time for one-stop routes: 12h 32m.

Which airport typically offers the quickest stopover for flights from San Francisco to London?

Flights via New York (JFK) offer the fastest connection on this route, with an average stopover time of 1h 19m.

Reviews of airlines servicing London

Read through reviews of airlines operating flights from San Francisco to London, such as United Airlines, Virgin Atlantic, andIberia. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

8,926 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

United Airlines

7.4

Good

8,926 reviews

United Airlines

7.4

Good

8,926 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Virgin Atlantic

7.4

Good

664 reviews

United Airlines

7.4

Good

8,926 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Iberia

7.0

Good

2,925 reviews

United Airlines

7.4

Good

8,926 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Lufthansa

6.8

Okay

7,409 reviews

United Airlines

7.4

Good

8,926 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

British Airways

6.7

Okay

7,367 reviews

United Airlines

7.4

Good

8,926 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

What airport do you fly from for flights from San Francisco to London?
Located just 11.8 mi from the city center, San Francisco is the airport most travelers will use when flying to London from San Francisco. Booking flights from San Francisco (SFO) to London should be relatively easy as there are 42 daily outbound flights to London from 9 different airlines.
How long is the flight from San Francisco to London?
Airlines like Scandinavian Airlines, TAP AIR PORTUGAL, and SWISS fly from San Francisco to London in about 14h 20m. The time it takes to get you to your destination can typically vary by up to 18h 55m. There are 5374 mi between San Francisco and London. This flight may include one or multiple stops.
What are the cheapest airlines flying from San Francisco to London round-trip?
Our cheapest airline available from San Francisco to London is Scandinavian Airlines. Our recent data shows that you can find tickets from as low as £350 on this airline. Additional options worth looking into are Virgin Atlantic and KLM, starting at £362 and £364 round-trip. Scandinavian Airlines is currently priced 36% below the average price you’ll pay for this route.
What are the cheapest airlines to fly from San Francisco to London one-way?
For one-way options, check prices for Delta. According to our data, you can fly for as low as £281. Users have also found prices from £281 and £285 on United Airlines and American Airlines, respectively.
What are the most popular routes from San Francisco to London?
While some choose either San Francisco - London Gatwick or San Francisco - London City, San Francisco - London Heathrow is the most popular route from San Francisco to London.
What are the most reliable airlines from San Francisco to London?
Before booking your flight to London from San Francisco, check out the most reliable airlines to get you to your destination on time: Aeromexico (95%), KLM (93%), Air France( 93%).
What are the cheapest flights from San Francisco to London?
Looking at all options, your cheapest flight can be booked for £265. While the most popular route (San Francisco - London Heathrow) can be booked for £324 on average, our data indicates £1,361 when flying from San Francisco to London.
Can I find deals for flights from San Francisco to London that include hotel bookings?
Yes. In addition to deals on San Francisco to London flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from San Francisco to London?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Francisco to London.
Can I find deals for business class flights from San Francisco to London?
Yes. Cheapflights offers flight deals from San Francisco to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from San Francisco to London?
Currently, January is the cheapest month in which you can book a flight from San Francisco to London (average of £112). Flying from San Francisco to London in August is currently the most expensive (average of £164). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Top 9 airlines flying from San Francisco to London

Airline	Cheapest	Average	Flexibility	On-time
Scandinavian Airlines	Cheapest£350	Average£440	FlexibilityNo cancel fee	On-time77%	Search Scandinavian Airlines flights
Virgin Atlantic	Cheapest£362	Average£537	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
KLM	Cheapest£364	Average£465	FlexibilityNo cancel fee	On-time75%	Search KLM flights
British Airways	Cheapest£380	Average£515	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
TAP AIR PORTUGAL	Cheapest£385	Average£400	FlexibilityNo cancel fee	On-timeN/A	Search TAP AIR PORTUGAL flights
United Airlines	Cheapest£410	Average£584	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Iberia	Cheapest£418	Average£507	FlexibilityNo cancel fee	On-time77%	Search Iberia flights
Lufthansa	Cheapest£423	Average£670	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Air Canada	Cheapest£427	Average£601	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights

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How does Cheapflights help users find flights from San Francisco to London?

When you search for this flight from San Francisco to London, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from San Francisco to London?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to London from San Francisco.

Can Cheapflights find flights from San Francisco to London with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from San Francisco to London flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from San Francisco to London become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from San Francisco to London from £279

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheapflights Tip: The best prices from San Francisco to London are usually found in October or September, booked 38 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

Cheap flight deals from San Francisco to London

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Find flight deals from San Francisco to London

Cheapest flights from San Francisco to LondonExplore the most affordable flight options available from San Francisco to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 September 2025.

Explore the most affordable flight options available from San Francisco to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 September 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from San Francisco to London that are best for you.

Best time to book a flight from San Francisco to London

Have a flexible travel schedule? Discover the best time to fly to London from San Francisco with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from San Francisco to London

How far ahead should I book a flight from San Francisco to London?

Use this chart to determine the optimal time to book a return flight from San Francisco to London. Price data was last updated on 12 September 2025.

What is the cheapest month to book a flight from San Francisco to London?

What is the cheapest time of day to fly from SFO to LON?

Find hourly flight availability from San Francisco to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 18 September 2025.

What is the cheapest day to fly from San Francisco to London?

Use this chart to determine the cheapest time to fly return from San Francisco to London. Price data was last updated on 16 December 2024.

Weekly flight availability from San Francisco to London

How much does it cost for a return flight from San Francisco to London?

What’s the top stopover airport for flights from San Francisco to London?

Share of one-stop return flights from San Francisco to London chosen by Cheapflights users in the past 12 months, using the same stopover each way.

What’s the cheapest stopover airport for flights from San Francisco to London?

Average return fare for one-stop flights from San Francisco to London, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

What’s the fastest stopover option from San Francisco to London?

Shortest average travel time for one-stop one-way flights from San Francisco to London, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Which airport typically offers the quickest stopover for flights from San Francisco to London?

Average stopover duration for one-stop one-way flights from San Francisco to London, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Reviews of airlines servicing London

Read through reviews of airlines operating flights from San Francisco to London, such as United Airlines, Virgin Atlantic, andIberia. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from San Francisco to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly from for flights from San Francisco to London?

How long is the flight from San Francisco to London?

What are the cheapest airlines flying from San Francisco to London round-trip?

What are the cheapest airlines to fly from San Francisco to London one-way?

What are the most popular routes from San Francisco to London?

What are the most reliable airlines from San Francisco to London?

What are the cheapest flights from San Francisco to London?

Can I find deals for flights from San Francisco to London that include hotel bookings?

How can I find direct flights from San Francisco to London?

Can I find deals for business class flights from San Francisco to London?

What is the cheapest month to book a flight from San Francisco to London?

Travelling to a place near London?

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Alternative routes for San Francisco to London

See prices for flight routes from nearby airports that may be better suited for you.

Top 9 airlines flying from San Francisco to London

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Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from San Francisco to London?

Why should you use Cheapflights to find cheap flight tickets from San Francisco to London?

Can Cheapflights find flights from San Francisco to London with no change fees?

Can Cheapflights notify me if prices for flights from San Francisco to London become cheaper?

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Cheapest flights from San Francisco to London
Explore the most affordable flight options available from San Francisco to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 September 2025.