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

Copenhagen (CPH) – chosen by Cheapflights users on 50% of one-stop itineraries from San Francisco to London Heathrow Airport on Cheapflights.

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

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 Heathrow Airport?

Flights via Dallas (DFW) offer the fastest connection on this route, with an average stopover time of 1h 23m.

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

Copenhagen (CPH) is the most affordable one-stop option, with an average return flight price of £391.

How long is the flight from San Francisco to London Heathrow Airport?

Airlines like Scandinavian Airlines and United Airlines fly from San Francisco to London Heathrow Airport in about 10h 20m. The time it takes to get you to your destination can typically vary by up to 8h 05m. Airlines will cover a distance of 5350 mi. This flight may include one or multiple stops.

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

Currently priced at £351, Scandinavian Airlines will fly you from San Francisco to London Heathrow Airport and back. In addition to Scandinavian Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Virgin Atlantic and KLM - these airlines can fly you to your destination from £364 and £365, respectively. Users have found that Scandinavian Airlines is 37% cheaper than the other options available to this destination.

Weekly flight availability from San Francisco to London Heathrow Airport

The most flights from SFO to LHR 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).

In terms of precipitation, rainfall in London Heathrow Airport 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 Heathrow Airport when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London Heathrow Airport, 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 cheapest flights from San Francisco to London Heathrow Airport?

On average you can expect to pay £1,366 for a flight from San Francisco to London Heathrow Airport. The cheapest flight overall is £266 while the most popular route, (San Francisco - London Heathrow) is currently priced at £319.

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

Consider Aeromexico (95%), KLM (93%) or Air France (93%) when booking your flight. These represent the most reliable airlines when flying from San Francisco to London Heathrow Airport.

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

The most popular airlines flying from San Francisco to London Heathrow Airport are Air Canada, British Airways and Iberia. Something to consider prior to booking your flight.

What is the cheapest day to fly round-trip from San Francisco to London Heathrow Airport?

Users have found that leaving on a Tuesday can be a cost-effective option. It’s possible to save up to 40% on your flight compared to booking on days when demand is much higher.

What is the cheapest month to fly from San Francisco to London Heathrow Airport?

Our data shows that October tends to be the cheapest month to fly to London Heathrow Airport from San Francisco. Users have commonly found prices around £554 for the month, but tickets can be as low as £379. Due to multiple factors, prepare for potentially higher prices in June.

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

For a flight from San Francisco to London Heathrow, you will be flying from San Francisco. San Francisco (SFO) is just 11.8 mi from the center of the city. San Francisco is the only San Francisco airport and it handles 42 outbound flights to London Heathrow per day. 9 airlines have flights to London Heathrow from San Francisco on a regular basis.

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

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

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

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

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

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

£280+ Cheap Flights from San Francisco to London Heathrow Airport

Cheapflights Tip: The best prices from San Francisco to London Heathrow are usually found in October or February, booked 54 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

Cheap flight deals from San Francisco to Heathrow

Round-trip from	£383
One-way from	£280
Popular in	June
Cheapest in	October
Average price	£496
Good round-trip deal	£468 or less
Good one-way deal	£299 or less

Scandinavian Airlines
13/10-10/11
3 total stops
34h 05m total
San Francisco to London

Search Deals

Iberia
20/10
Nonstop
10h 25m total
San Francisco to London

Search Deals

Highest demand for flights based on searches. 17% potential increase in price (£89 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (£16 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 Heathrow.

Search Deals

Price to beat on a one-way flight from San Francisco to London Heathrow.

Search Deals

Find flight deals from San Francisco to Heathrow

Cheapest flights from San Francisco to Heathrow
Explore the most affordable flight options available from San Francisco to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 16 September 2025.

Mon 13/1015:30SFO - LHR

2 stops18h 10mScandinavian Airlines

Mon 10/1106:40LHR - SFO

1 stop15h 55mScandinavian Airlines

Deal found 14/9£383

Sun 21/908:30SFO - LHR

1 stop14h 00mMultiple Airlines

Tue 7/1006:50LHR - SFO

2 stops21h 01mMultiple Airlines

Deal found 13/9£384

Wed 29/1017:35SFO - LHR

1 stop34h 50mTAP AIR PORTUGAL

Sat 8/1106:00LHR - SFO

1 stop16h 45mTAP AIR PORTUGAL

Deal found 13/9£387

Mon 27/1020:59SFO - LHR

2 stops38h 31mScandinavian Airlines

Wed 12/1119:30LHR - SFO

1 stop27h 05mScandinavian Airlines

Deal found 12/9£389

Mon 10/1120:55SFO - LHR

2 stops37h 35mScandinavian Airlines

Fri 14/1106:40LHR - SFO

1 stop15h 55mScandinavian Airlines

Deal found 13/9£389

Wed 12/1112:30SFO - LHR

2 stops21h 10mScandinavian Airlines

Wed 19/1119:30LHR - SFO

1 stop27h 05mScandinavian Airlines

Deal found 12/9£391

Thu 30/1021:30SFO - LHR

2 stops38h 00mScandinavian Airlines

Sun 2/1117:00LHR - SFO

1 stop29h 35mScandinavian Airlines

Deal found 15/9£392

Wed 12/1112:30SFO - LHR

2 stops22h 00mScandinavian Airlines

Thu 20/1106:40LHR - SFO

1 stop15h 55mScandinavian Airlines

Deal found 15/9£393

Fri 5/1216:40SFO - LHR

2 stops32h 15mScandinavian Airlines

Mon 8/1206:40LHR - SFO

2 stops24h 18mScandinavian Airlines

Deal found 14/9£394

Wed 5/1116:35SFO - LHR

1 stop22h 05mTAP AIR PORTUGAL

Wed 12/1106:00LHR - SFO

1 stop16h 30mTAP AIR PORTUGAL

Deal found 13/9£396

Mon 13/1018:59SFO - LHR

2 stops38h 41mScandinavian Airlines

Sat 25/1006:40LHR - SFO

1 stop17h 50mScandinavian Airlines

Deal found 13/9£397

Best flights from San Francisco to Heathrow
Discover carefully curated flight deals from San Francisco to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 16 September 2025.

Mon 9/316:15SFO - LHR

2 stops18h 25mScandinavian Airlines

Wed 18/319:30LHR - SFO

1 stop27h 05mScandinavian Airlines

Deal found 14/9£389

Tue 7/1016:05SFO - LHR

Nonstop10h 20mUnited Airlines

Thu 16/1008:40LHR - SFO

1 stop15h 30mUnited Airlines

Deal found 14/9£419

Wed 15/1015:00SFO - LHR

1 stop14h 30mDelta

Fri 6/211:40LHR - SFO

Nonstop11h 00mDelta

Deal found 15/9£436

Thu 30/1021:30SFO - LHR

2 stops38h 00mScandinavian Airlines

Sun 2/1117:00LHR - SFO

1 stop29h 35mScandinavian Airlines

Deal found 15/9£392

Sun 30/1112:50SFO - LHR

Nonstop10h 35mUnited Airlines

Mon 8/1213:50LHR - SFO

1 stop33h 00mUnited Airlines

Deal found 15/9£428

Mon 9/316:15SFO - LHR

2 stops18h 25mScandinavian Airlines

Sun 22/319:30LHR - SFO

1 stop27h 05mScandinavian Airlines

Deal found 15/9£400

Wed 31/1209:53SFO - LHR

1 stop16h 07mDelta

Thu 15/111:40LHR - SFO

Nonstop11h 00mDelta

Deal found 15/9£454

Wed 11/313:00SFO - LHR

2 stops22h 30mScandinavian Airlines

Wed 18/319:50LHR - SFO

2 stops26h 45mScandinavian Airlines

Deal found 15/9£403

Sat 15/1100:45SFO - LHR

1 stop22h 20mDelta

Fri 28/1111:40LHR - SFO

Nonstop11h 00mDelta

Deal found 14/9£458

Mon 8/1212:25SFO - LHR

2 stops22h 05mScandinavian Airlines

Fri 26/1219:50LHR - SFO

2 stops26h 45mScandinavian Airlines

Deal found 15/9£455

Sun 12/1019:40SFO - LHR

1 stop14h 00mScandinavian Airlines

Sun 8/219:30LHR - SFO

1 stop27h 05mScandinavian Airlines

Deal found 15/9£461

Direct flights from San Francisco to Heathrow
Explore direct flight options from San Francisco to Heathrow based on user searches, and compare prices and availability for your desired travel dates. Data last updated 16 September 2025.

Wed 29/1017:30SFO - LHR

Nonstop10h 10mVirgin Atlantic

Wed 5/1111:40LHR - SFO

Nonstop11h 00mVirgin Atlantic

Deal found 14/9£422

Tue 14/1019:20SFO - LHR

Nonstop10h 25mBritish Airways

Tue 21/1014:15LHR - SFO

Nonstop11h 10mBritish Airways

Deal found 14/9£428

Tue 7/1016:30SFO - LHR

Nonstop10h 25mBritish Airways

Wed 22/1010:45LHR - SFO

Nonstop11h 05mBritish Airways

Deal found 16/9£428

Mon 1/1220:40SFO - LHR

Nonstop10h 30mBritish Airways

Fri 12/1215:25LHR - SFO

Nonstop11h 20mBritish Airways

Deal found 14/9£430

Tue 14/1016:30SFO - LHR

Nonstop10h 25mBritish Airways

Thu 23/1010:45LHR - SFO

Nonstop11h 05mBritish Airways

Deal found 15/9£432

Sun 28/913:05SFO - LHR

Nonstop10h 20mUnited Airlines

Wed 15/1010:35LHR - SFO

Nonstop11h 05mUnited Airlines

Deal found 16/9£433

Thu 30/1018:25SFO - LHR

Nonstop10h 35mLufthansa

Thu 6/1110:05LHR - SFO

Nonstop11h 15mLufthansa

Deal found 15/9£437

Wed 4/316:30SFO - LHR

Nonstop10h 10mDelta

Wed 18/311:40LHR - SFO

Nonstop11h 00mDelta

Deal found 15/9£438

Mon 8/1220:40SFO - LHR

Nonstop10h 30mBritish Airways

Fri 26/1211:45LHR - SFO

Nonstop11h 15mBritish Airways

Deal found 15/9£450

Sun 7/1216:30SFO - LHR

Nonstop10h 10mDelta

Fri 9/111:40LHR - SFO

Nonstop11h 00mDelta

Deal found 14/9£450

Last-minute flights from San Francisco to Heathrow
Discover last-minute flight deals from San Francisco to Heathrow. Data last updated 16 September 2025 and is based on user searches.

Sun 21/907:25SFO - LHR

1 stop18h 35mMultiple Airlines

Tue 7/1008:45LHR - SFO

1 stop15h 25mMultiple Airlines

Deal found 13/9£401

Mon 13/1015:30SFO - LHR

2 stops18h 10mScandinavian Airlines

Mon 10/1106:40LHR - SFO

1 stop15h 55mScandinavian Airlines

Deal found 14/9£383

Mon 13/1018:59SFO - LHR

2 stops38h 41mScandinavian Airlines

Sat 25/1006:40LHR - SFO

1 stop17h 50mScandinavian Airlines

Deal found 13/9£397

Tue 14/1015:30SFO - LHR

2 stops19h 00mScandinavian Airlines

Thu 5/219:30LHR - SFO

1 stop27h 05mScandinavian Airlines

Deal found 15/9£393

Tue 14/1015:30SFO - LHR

2 stops18h 10mScandinavian Airlines

Tue 28/1019:50LHR - SFO

2 stops27h 20mScandinavian Airlines

Deal found 15/9£403

Wed 15/1012:35SFO - LHR

2 stops21h 05mScandinavian Airlines

Sat 25/1006:40LHR - SFO

1 stop17h 50mScandinavian Airlines

Deal found 15/9£400

Wed 22/1015:30SFO - LHR

2 stops19h 00mScandinavian Airlines

Wed 12/1121:05LHR - SFO

2 stops25h 30mScandinavian Airlines

Deal found 13/9£398

Thu 23/1019:40SFO - LHR

1 stop29h 40mScandinavian Airlines

Sun 26/1006:40LHR - SFO

2 stops17h 55mScandinavian Airlines

Deal found 15/9£392

One-way flights from San Francisco to Heathrow
Search for one-way flight options from San Francisco to Heathrow. Find affordable one-way fares based on user searches. Data last updated 16 September 2025.

Mon 20/1019:20SFO - LHR

Nonstop10h 25mIberia

Deal found 15/9£280

Mon 10/1117:30SFO - LHR

Nonstop10h 30mIberia

Deal found 15/9£281

Sun 21/923:00SFO - LHR

3 stops39h 00mMultiple Airlines

Deal found 14/9£282

Mon 13/1016:05SFO - LHR

Nonstop10h 20mUnited Airlines

Deal found 15/9£283

Mon 5/123:20SFO - LHR

2 stops23h 50mAir Canada

Deal found 14/9£283

Sun 28/912:15SFO - LHR

2 stops37h 20mAustrian Airlines

Deal found 15/9£284

Mon 22/923:00SFO - LHR

3 stops51h 20mMultiple Airlines

Deal found 15/9£285

Tue 28/1000:35SFO - LHR

1 stop23h 30mDelta

Deal found 15/9£286

Tue 14/1017:40SFO - LHR

1 stop13h 15mAer Lingus

Deal found 14/9£287

Sun 30/1107:30SFO - LHR

2 stops19h 50mAir Canada

Deal found 14/9£288

Mon 10/1108:25SFO - LHR

2 stops18h 55mAir Canada

Deal found 14/9£288

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Mon 9/3

16:15-17:40

2 stops18h 25m

London Heathrow

Wed 18/3

19:30-15:35

1 stop27h 05m

£389

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

£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

£400

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Wed 11/3

13:00-18:30

2 stops22h 30m

London Heathrow

Wed 18/3

19:50-15:35

2 stops26h 45m

£403

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Tue 7/10

16:05-10:25

Nonstop10h 20m

London Heathrow

Thu 16/10

08:40-16:10

1 stop15h 30m

£419

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Sun 30/11

12:50-07:25

Nonstop10h 35m

London Heathrow

Mon 8/12

13:50-14:50

1 stop33h 00m

£428

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Wed 15/10

15:00-13:30

1 stop14h 30m

London Heathrow

Fri 6/2

11:40-14:40

Nonstop11h 00m

£436

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Wed 31/12

09:53-10:00

1 stop16h 07m

London Heathrow

Thu 15/1

11:40-14:40

Nonstop11h 00m

£454

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Mon 8/12

12:25-18:30

2 stops22h 05m

London Heathrow

Fri 26/12

19:50-14:35

2 stops26h 45m

£455

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Sat 15/11

00:45-07:05

1 stop22h 20m

London Heathrow

Fri 28/11

11:40-14:40

Nonstop11h 00m

£458

Flights are sorted by cheapest return flights first.

Deals found on 15/9

Showing 1-10 of 23 results

Best time to book a flight from San Francisco to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow 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 Heathrow Airport

Prices

Airlines

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

Booking 54 days in advance of your planned departure date is, on average, the best time to get cheap flights from San Francisco to London Heathrow Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, January is the cheapest month in which you can book a flight from San Francisco to London Heathrow Airport (average of £112). Flying from San Francisco to London Heathrow Airport 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 LHR?

When flying from San Francisco to London Heathrow Airport, 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 Heathrow Airport?

Travellers seeking maximum savings on their San Francisco to London Heathrow Airport 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.

Reviews of airlines servicing Heathrow

See what other customers who have flown with United Airlines, Virgin Atlantic, andIberia from San Francisco to London Heathrow Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

8,929 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

8,929 reviews

United Airlines

7.4

Good

8,929 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

8,929 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

2,924 reviews

United Airlines

7.4

Good

8,929 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

7,407 reviews

United Airlines

7.4

Good

8,929 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

7,361 reviews

United Airlines

7.4

Good

8,929 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 Heathrow?
For a flight from San Francisco to London Heathrow, you will be flying from San Francisco. San Francisco (SFO) is just 11.8 mi from the center of the city. San Francisco is the only San Francisco airport and it handles 42 outbound flights to London Heathrow per day. 9 airlines have flights to London Heathrow from San Francisco on a regular basis.
How long is the flight from San Francisco to London Heathrow Airport?
Airlines like Scandinavian Airlines and United Airlines fly from San Francisco to London Heathrow Airport in about 10h 20m. The time it takes to get you to your destination can typically vary by up to 8h 05m. Airlines will cover a distance of 5350 mi. This flight may include one or multiple stops.
What are the cheapest airlines flying from San Francisco to London Heathrow Airport round-trip?
Currently priced at £351, Scandinavian Airlines will fly you from San Francisco to London Heathrow Airport and back. In addition to Scandinavian Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Virgin Atlantic and KLM - these airlines can fly you to your destination from £364 and £365, respectively. Users have found that Scandinavian Airlines is 37% cheaper than the other options available to this destination.
What are the most reliable airlines from San Francisco to London Heathrow Airport?
Consider Aeromexico (95%), KLM (93%) or Air France (93%) when booking your flight. These represent the most reliable airlines when flying from San Francisco to London Heathrow Airport.
What are the cheapest flights from San Francisco to London Heathrow Airport?
On average you can expect to pay £1,366 for a flight from San Francisco to London Heathrow Airport. The cheapest flight overall is £266 while the most popular route, (San Francisco - London Heathrow) is currently priced at £319.
Can I find deals for flights from San Francisco to Heathrow that include hotel bookings?
Yes. In addition to deals on San Francisco to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from San Francisco to Heathrow?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Francisco to Heathrow.
Can I find deals for business class flights from San Francisco to Heathrow?
Yes. Cheapflights offers flight deals from San Francisco to Heathrow 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 Heathrow Airport?
Currently, January is the cheapest month in which you can book a flight from San Francisco to London Heathrow Airport (average of £112). Flying from San Francisco to London Heathrow Airport 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.

See more FAQs

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Top 9 airlines flying from San Francisco to Heathrow

Airline	Cheapest	Average	Flexibility	On-time
Scandinavian Airlines	Cheapest£351	Average£442	FlexibilityNo cancel fee	On-time77%	Search Scandinavian Airlines flights
Virgin Atlantic	Cheapest£364	Average£540	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
KLM	Cheapest£365	Average£467	FlexibilityNo cancel fee	On-time75%	Search KLM flights
British Airways	Cheapest£382	Average£517	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
TAP AIR PORTUGAL	Cheapest£386	Average£402	FlexibilityNo cancel fee	On-timeN/A	Search TAP AIR PORTUGAL flights
United Airlines	Cheapest£412	Average£587	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Iberia	Cheapest£420	Average£509	FlexibilityNo cancel fee	On-time77%	Search Iberia flights
Lufthansa	Cheapest£425	Average£673	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Air Canada	Cheapest£429	Average£604	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights

Fly with Cheapflights

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

Cheapflights helps you search for flights from San Francisco to Heathrow via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

Cheapflights simply makes it quick and affordable to book flights from San Francisco to Heathrow by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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

Yes! Cheapflights helps users easily find flights from San Francisco to Heathrow with no change fees.

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Heathrow from San Francisco today and book when prices fit your budget.

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Cheapflights is completely free to use, so you can start saving the moment you arrive.

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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 Heathrow Airport from £280

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 20/10. 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 Heathrow are usually found in October or February, booked 54 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

Cheap flight deals from San Francisco to Heathrow

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

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Find flight deals from San Francisco to Heathrow

Cheapest flights from San Francisco to HeathrowExplore the most affordable flight options available from San Francisco to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 16 September 2025.

Explore the most affordable flight options available from San Francisco to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 16 September 2025.

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

Best time to book a flight from San Francisco to Heathrow

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

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

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

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

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

Weekly flight availability from San Francisco to London Heathrow Airport

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

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

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

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

Reviews of airlines servicing Heathrow

See what other customers who have flown with United Airlines, Virgin Atlantic, andIberia from San Francisco to London Heathrow Airport have to say. You can also see how each airline compares in terms of 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 Heathrow. 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 Heathrow?

How long is the flight from San Francisco to London Heathrow Airport?

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

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

What are the cheapest flights from San Francisco to London Heathrow Airport?

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

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

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

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

Travelling to a place near London Heathrow Airport?

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Alternative routes for San Francisco to Heathrow

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Top 9 airlines flying from San Francisco to Heathrow

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Cheapest flights from San Francisco to Heathrow
Explore the most affordable flight options available from San Francisco to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 16 September 2025.