How long is the flight from San Francisco to London?

Airlines like Scandinavian Airlines, TAP AIR PORTUGAL, and Turkish Airlines fly from San Francisco to London in about 18h 05m. The time it takes to get you to your destination can typically vary by up to 13h 05m. There are 5350 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 Virgin Atlantic. Our recent data shows that you can find tickets from as low as £436 on this airline. Additional options worth looking into are Lufthansa and KLM, starting at £441 and £451 round-trip. Virgin Atlantic is currently priced 32% 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 Virgin Atlantic. According to our data, you can fly for as low as £230. Users have also found prices from £243 and £263 on United Airlines and KLM, 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 £292. While the most popular route (San Francisco - London Heathrow) can be booked for £414 on average, our data indicates £1,551 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: Air Canada (83%), Austrian Airlines (83%), United Airlines( 83%).

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: Virgin Atlantic, United Airlines or British Airways.

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

Located just 11.0 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 40 daily outbound flights to London from 6 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+ Cheap Flights from San Francisco to London

Cheapflights Tip: The best prices from San Francisco to London are usually found in February or January, booked 23 days in advance, depart on a Wednesday or Thursday and return on a Thursday

Cheap flight deals from San Francisco to London

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

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 31 August 2026.

Mon 28/1220:35 -

Nonstop10h 35m

Mon 18/106:00 -

1 stop18h 30m

Deal found 26/8£606

Mon 19/1016:45 -

2 stops22h 35m

Fri 23/1013:10 -

2 stops33h 30m

Deal found 26/8£607

Sat 31/1017:45 -

2 stops18h 05m

Tue 10/1106:40 -

1 stop16h 10m

Deal found 26/8£607

Sat 7/1116:35 -

1 stop33h 15m

Sun 15/1121:25 -

2 stops25h 20m

Deal found 26/8£608

Sat 28/1116:45 -

1 stop16h 55m

Tue 8/1217:00 -

1 stop29h 50m

Deal found 26/8£608

Sat 26/922:10 -

1 stop24h 20m

Wed 7/1010:35 -

Nonstop11h 00m

Deal found 27/8£609

Sun 18/1008:30 -

2 stops25h 35m

Sat 24/1018:15 -

2 stops27h 20m

Deal found 27/8£609

Sun 27/916:45 -

1 stop20h 55m

Tue 13/1017:00 -

1 stop29h 40m

Deal found 27/8£609

Mon 5/1016:30 -

1 stop33h 15m

Wed 14/1016:25 -

1 stop30h 05m

Deal found 30/8£610

Sun 1/1117:20 -

1 stop17h 50m

Tue 10/1120:45 -

2 stops26h 00m

Deal found 26/8£610

Sun 11/1016:45 -

2 stops19h 10m

Sun 18/1020:35 -

2 stops26h 05m

Deal found 27/8£610

Sun 11/1016:45 -

2 stops24h 05m

Sun 18/1010:40 -

2 stops36h 00m

Deal found 27/8£611

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 31 August 2026.

Thu 19/1106:30 -

3 stops27h 05m

Tue 24/1121:30 -

2 stops25h 15m

Deal found 31/8£612

Tue 19/107:15 -

2 stops18h 05m

Sat 23/115:35 -

2 stops31h 15m

Deal found 28/8£619

Wed 21/1016:35 -

1 stop33h 10m

Mon 26/1021:35 -

2 stops49h 10m

Deal found 27/8£626

Sat 10/1020:44 -

1 stop16h 01m

Sat 17/1011:55 -

1 stop19h 42m

Deal found 26/8£664

Sun 27/919:45 -

Nonstop10h 25m

Tue 13/1016:15 -

Nonstop11h 00m

Deal found 26/8£683

Wed 14/1017:55 -

Nonstop10h 20m

Mon 19/1009:55 -

1 stop33h 50m

Deal found 28/8£686

Mon 9/1117:25 -

Nonstop10h 25m

Tue 24/1111:45 -

Nonstop11h 10m

Deal found 30/8£688

Sun 27/914:15 -

2 stops19h 05m

Tue 13/1019:00 -

1 stop24h 45m

Deal found 28/8£710

Sat 7/1115:05 -

2 stops19h 50m

Wed 11/1109:00 -

2 stops36h 05m

Deal found 26/8£711

Tue 10/1118:35 -

1 stop37h 45m

Mon 23/1110:55 -

1 stop37h 35m

Deal found 30/8£732

Wed 9/1216:45 -

2 stops19h 10m

Tue 15/1206:40 -

2 stops25h 42m

Deal found 29/8£625

Mon 23/1108:25 -

2 stops28h 25m

Mon 30/1121:30 -

3 stops33h 27m

Deal found 29/8£629

Mon 28/916:30 -

1 stop33h 15m

Tue 13/1012:10 -

2 stops58h 20m

Deal found 31/8£630

Thu 10/1216:45 -

2 stops19h 10m

Tue 15/1206:40 -

2 stops25h 42m

Deal found 29/8£625

Wed 14/1016:35 -

1 stop33h 10m

Sun 1/1121:25 -

2 stops25h 20m

Deal found 29/8£640

Fri 6/1114:45 -

3 stops22h 05m

Tue 10/1107:45 -

2 stops21h 48m

Deal found 28/8£644

Thu 12/1113:50 -

1 stop18h 45m

Mon 23/1110:00 -

1 stop33h 45m

Deal found 30/8£719

Thu 24/913:45 -

1 stop19h 35m

Mon 5/1020:15 -

1 stop23h 30m

Deal found 26/8£719

Sat 30/118:35 -

1 stop31h 20m

Tue 9/217:20 -

1 stop31h 10m

Deal found 27/8£732

Wed 18/1116:45 -

1 stop16h 55m

Sun 29/1121:05 -

2 stops25h 45m

Deal found 30/8£632

Fri 11/1219:15 -

2 stops29h 05m

Tue 22/1216:35 -

1 stop30h 10m

Deal found 30/8£646

Sun 8/1109:15 -

3 stops21h 20m

Thu 12/1117:20 -

2 stops30h 45m

Deal found 31/8£654

Fri 22/106:15 -

2 stops17h 55m

Sun 31/120:05 -

1 stop23h 40m

Deal found 31/8£734

Thu 12/1118:35 -

1 stop31h 20m

Sun 22/1110:55 -

1 stop37h 35m

Deal found 27/8£747

Wed 23/916:45 -

1 stop16h 55m

Mon 5/1021:05 -

2 stops25h 35m

Deal found 26/8£639

Thu 8/1016:30 -

1 stop33h 15m

Mon 12/1012:05 -

2 stops33h 30m

Deal found 30/8£648

Wed 30/911:10 -

3 stops23h 55m

Wed 7/1019:45 -

2 stops24h 55m

Deal found 30/8£654

Sun 1/1113:50 -

1 stop18h 45m

Wed 11/1110:00 -

2 stops20h 45m

Deal found 26/8£739

Sat 10/1016:45 -

2 stops19h 10m

Fri 16/1006:40 -

1 stop16h 00m

Deal found 28/8£641

Sat 14/1118:35 -

1 stop20h 00m

Sat 21/1110:05 -

1 stop38h 25m

Deal found 27/8£783

Find flight deals from San Francisco to London

Round-trip from	£606
One-way from	£283
Popular in	June
Cheapest in	February
Average price	£725
Good round-trip deal	£729 or less
Good one-way deal	£339 or less

SWISS
28/12-18/1
1 total stop
29h 05m total
San Francisco to London

Search Deals

Air Canada
26/11
2 total stops
18h 20m total
San Francisco to London

Search Deals

Highest demand for flights based on searches. 18% potential increase in price (£112 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease (£19 potential savings vs. average return price).

Search Deals

Average for round-trip flights in August 2026

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

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

Cheapest return flight

San FranciscoLondon

SFO San Francisco - LTN London Luton

SFOLTN

San Francisco

Thu 19/11

06:30-17:35

3 stops27h 05m

London Luton

Tue 24/11

21:30-14:45

2 stops25h 15m

£612

San FranciscoLondon

SFO San Francisco - LHR London Heathrow

SFOLHR

San Francisco

Tue 19/1

07:15-09:20

2 stops18h 05m

London Heathrow

Sat 23/1

15:35-14:50

2 stops31h 15m

£619

San FranciscoLondon

SFO San Francisco - LHR London Heathrow

SFOLHR

San Francisco

Wed 9/12

16:45-19:55

2 stops19h 10m

London Heathrow

Tue 15/12

06:40-00:22

2 stops25h 42m

£625

San FranciscoLondon

SFO San Francisco - LHR London Heathrow

SFOLHR

San Francisco

Thu 10/12

16:45-19:55

2 stops19h 10m

London Heathrow

Tue 15/12

06:40-00:22

2 stops25h 42m

£625

San FranciscoLondon

SFO San Francisco - LGW London Gatwick

SFOLGW

San Francisco

Wed 21/10

16:35-09:45

1 stop33h 10m

London Gatwick

Mon 26/10

21:35-15:45

2 stops49h 10m

£626

San FranciscoLondon

SFO San Francisco - LTN London Luton

SFOLTN

San Francisco

Mon 23/11

08:25-20:50

2 stops28h 25m

London Luton

Mon 30/11

21:30-22:57

3 stops33h 27m

£629

San FranciscoLondon

SFO San Francisco - LGW London Gatwick

SFOLGW

San Francisco

Mon 28/9

16:30-09:45

1 stop33h 15m

London Gatwick

Tue 13/10

12:10-14:30

2 stops58h 20m

£630

San FranciscoLondon

SFO San Francisco - LHR London Heathrow

SFOLHR

San Francisco

Wed 18/11

16:45-17:40

1 stop16h 55m

London Heathrow

Sun 29/11

21:05-14:50

2 stops25h 45m

£632

San FranciscoLondon

SFO San Francisco - LHR London Heathrow

SFOLHR

San Francisco

Wed 23/9

16:45-17:40

1 stop16h 55m

London Heathrow

Mon 5/10

21:05-14:40

2 stops25h 35m

£639

San FranciscoLondon

SFO San Francisco - LGW London Gatwick

SFOLGW

San Francisco

Wed 14/10

16:35-09:45

1 stop33h 10m

London Gatwick

Sun 1/11

21:25-14:45

2 stops25h 20m

£640

Flights are sorted by cheapest return flights first.

Deals found on 29/8

Showing 1-10 of 60 resultsSorted by cheapest first

...

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.

SFO-LON

SFO-LGW

SFO-STN

SFO-LTN

SFO-LHR

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

SFO-LON

SFO-LGW

SFO-STN

SFO-LTN

SFO-LHR

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

Currently, February is the cheapest month in which you can book a flight from San Francisco to London (average of £479). Flying from San Francisco to London in June is currently the most expensive (average of £947). 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 morning, which can drop the price by up to 33% versus a flight at midday.

Weekly flight availability from San Francisco to London

The most flights from SFO to LON are scheduled on a Tuesday (44 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (37 on average).

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

Airfare is typical for this route at the moment.

San Francisco to London flights typically cost between £500 and £770 in December.
The cheapest return price found within the last 5 days was £606 on Multiple Airlines (28 Dec–18 Jan).

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

Copenhagen (CPH) – chosen by Cheapflights users on 40% of one-stop itineraries from San Francisco to London on Cheapflights.

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

Lisbon (LIS) is the most affordable one-stop option, with an average return flight price of £407.

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

Flights via Dublin (DUB) have the shortest average one-way travel time for one-stop routes: 13h 20m.

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

Flights via Dallas (DFW) offer the fastest connection on this route, with an average stopover time of 1h 11m.

How often are flights from San Francisco to London delayed?

About 11% of weekly flights between San Francisco and London have experienced delays in the past year, with the average delay time being 153 minutes.

What is the most punctual flight time for San Francisco to London flights?

Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Monday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on San Francisco to London flights?

Over the past year, British Airways have had the lowest number of delays on this route, with just 8% of flights being delayed.

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 day to fly from San Francisco to London?

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

Reviews of airlines servicing London

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

KLM

7.8

Good

1,570 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Abhisek,Aug 2026

JFK - AMS

They didn’t offer any options for breakfast and had only one option which was cold meat and cheese. I would expect at least one more option in premium economy

KLM

7.8

Good

1,570 reviews

KLM

7.8

Good

1,570 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Abhisek,Aug 2026

JFK - AMS

They didn’t offer any options for breakfast and had only one option which was cold meat and cheese. I would expect at least one more option in premium economy

Air France

7.5

Good

1,645 reviews

KLM

7.8

Good

1,570 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Abhisek,Aug 2026

JFK - AMS

They didn’t offer any options for breakfast and had only one option which was cold meat and cheese. I would expect at least one more option in premium economy

United Airlines

7.4

Good

10,151 reviews

KLM

7.8

Good

1,570 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Abhisek,Aug 2026

JFK - AMS

They didn’t offer any options for breakfast and had only one option which was cold meat and cheese. I would expect at least one more option in premium economy

Virgin Atlantic

7.4

Good

695 reviews

KLM

7.8

Good

1,570 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Abhisek,Aug 2026

JFK - AMS

They didn’t offer any options for breakfast and had only one option which was cold meat and cheese. I would expect at least one more option in premium economy

British Airways

6.7

Okay

8,198 reviews

KLM

7.8

Good

1,570 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Abhisek,Aug 2026

JFK - AMS

They didn’t offer any options for breakfast and had only one option which was cold meat and cheese. I would expect at least one more option in premium economy

Related info for your journey

What airport do you fly from for flights from San Francisco to London?
Located just 11.0 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 40 daily outbound flights to London from 6 different airlines.
How long is the flight from San Francisco to London?
Airlines like Scandinavian Airlines, TAP AIR PORTUGAL, and Turkish Airlines fly from San Francisco to London in about 18h 05m. The time it takes to get you to your destination can typically vary by up to 13h 05m. There are 5350 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 Virgin Atlantic. Our recent data shows that you can find tickets from as low as £436 on this airline. Additional options worth looking into are Lufthansa and KLM, starting at £441 and £451 round-trip. Virgin Atlantic is currently priced 32% 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 Virgin Atlantic. According to our data, you can fly for as low as £230. Users have also found prices from £243 and £263 on United Airlines and KLM, 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: Air Canada (83%), Austrian Airlines (83%), United Airlines( 83%).
What are the cheapest flights from San Francisco to London?
Looking at all options, your cheapest flight can be booked for £292. While the most popular route (San Francisco - London Heathrow) can be booked for £414 on average, our data indicates £1,551 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, February is the cheapest month in which you can book a flight from San Francisco to London (average of £479). Flying from San Francisco to London in June is currently the most expensive (average of £947). 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 6 airlines flying from San Francisco to London

Airline	Cheapest	Average	Flexibility	On-time
Virgin Atlantic	Cheapest£436	Average£572	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Lufthansa	Cheapest£441	Average£769	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
KLM	Cheapest£451	Average£721	FlexibilityNo cancel fee	On-time75%	Search KLM flights
British Airways	Cheapest£457	Average£618	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
United Airlines	Cheapest£471	Average£607	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Delta	Cheapest£471	Average£848	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights

Fly with Cheapflights

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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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 20/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap 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 31 August 2026.

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 31 August 2026.

Best flights from San Francisco to LondonDiscover 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 31 August 2026.

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 31 August 2026.

Direct flights from San Francisco to LondonExplore 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 31 August 2026.

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 31 August 2026.

Last-minute flights from San Francisco to LondonDiscover last-minute flight deals from San Francisco to London. Data last updated 31 August 2026 and is based on user searches.

Discover last-minute flight deals from San Francisco to London. Data last updated 31 August 2026 and is based on user searches.

One-way flights from San Francisco to LondonSearch for one-way flight options from San Francisco to London. Find affordable one-way fares based on user searches. Data last updated 31 August 2026.

Search for one-way flight options from San Francisco to London. Find affordable one-way fares based on user searches. Data last updated 31 August 2026.

Find flight deals from San Francisco to London

Round-trip from

One-way from

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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.

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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 31 August 2026.

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 morning, which can drop the price by up to 33% versus a flight at midday.

Weekly flight availability from San Francisco to London

Explore weekly flight availability from San Francisco to London. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 31 August 2026.

The most flights from SFO to LON are scheduled on a Tuesday (44 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (37 on average).

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

Airfare is typical for this route at the moment.

San Francisco to London flights typically cost between £500 and £770 in December.The cheapest return price found within the last 5 days was £606 on Multiple Airlines (28 Dec–18 Jan).

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.

Copenhagen (CPH) – chosen by Cheapflights users on 40% of one-stop itineraries from San Francisco to London on Cheapflights.

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.

Lisbon (LIS) is the most affordable one-stop option, with an average return flight price of £407.

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.

Flights via Dublin (DUB) have the shortest average one-way travel time for one-stop routes: 13h 20m.

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.

Flights via Dallas (DFW) offer the fastest connection on this route, with an average stopover time of 1h 11m.

How often are flights from San Francisco to London delayed?

About 11% of weekly flights between San Francisco and London have experienced delays in the past year, with the average delay time being 153 minutes.

What is the most punctual flight time for San Francisco to London flights?

Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Monday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on San Francisco to London flights?

Over the past year, British Airways have had the lowest number of delays on this route, with just 8% of flights being delayed.

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 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 29 August 2026.

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

Reviews of airlines servicing London

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

Related info for your journey

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?

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Alternative routes for San Francisco to London

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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 31 August 2026.

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 31 August 2026.

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 31 August 2026.

Last-minute flights from San Francisco to London
Discover last-minute flight deals from San Francisco to London. Data last updated 31 August 2026 and is based on user searches.

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 31 August 2026.

San Francisco to London flights typically cost between £500 and £770 in December.
The cheapest return price found within the last 5 days was £606 on Multiple Airlines (28 Dec–18 Jan).