How often are flights from San Francisco to London delayed?

Historically, on average around 12% of flights between San Francisco and London have experienced a delay on any given week. The average delay length over the past 12 months has been 157 minutes.

Which airlines fly to London Heathrow Airport?

Virgin Atlantic, United Airlines and British Airways are the top three most popular airlines that fly to London Heathrow Airport from San Francisco according to our data. Virgin Atlantic is the first choice among our users, with 33% of people opting to fly with this airline when travelling to London Heathrow Airport. Keep in mind that there are 7 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from San Francisco to London Heathrow?

British Airways, JetBlue, and Austrian Airlines are the most popular carriers operating from San Francisco to London Heathrow

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

According to our data, Virgin Atlantic have had the fewest delays on this route over the last 12 months, with about 9% of their flights experiencing any sort of delay.

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

Generally, flights departing at night tend to experience fewer delays. Flights departing in the early afternoon have, in the past, seen delays more frequently in comparison.

How many flights depart from San Francisco to London Heathrow Airport on average per week?

As of October 2025, there are 118 flights per week flying from San Francisco to London Heathrow Airport. The most common day of the week flights depart is Wed, with 26% of flights taking off on this day.

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

Wednesday is statistically the day of the week that experiences the fewest delays on this flight route. Thursday has historically seen more delays on average compared to the rest of the week.

How many flights depart from San Francisco to London Heathrow Airport on average per day?

The number of flights available between San Francisco and London Heathrow Airport is 16 per day as of October 2025. The most frequent departure time is 18:00, with 55% of daily flights leaving in the evening.

When did momondo last update prices for flights from San Francisco Airport to London Heathrow Airport?

Prices for flights from San Francisco Airport to London Heathrow Airport are refreshed on a daily basis.

How many operators does momondo search for flights from San Francisco Airport to London Heathrow Airport?

There are 7 operators available for flights from San Francisco Airport to London Heathrow Airport as of October 2025.

How old do you have to be to fly from San Francisco Airport to London Heathrow Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from San Francisco Airport to London Heathrow Airport.

What documentation or ID do you need to fly to London Heathrow Airport?

The travel and health documents required for your trip to London Heathrow Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at London Heathrow Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

£272 Cheap Flights from San Francisco to London Heathrow Airport in 2025/26

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Voted winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from San Francisco to London

Round-trip

One-way

Last minute

Direct

Cheap return flights

Enter your travel dates to find the best prices.

16:40 - 18:50SFO-LHR

18h 10m2 stops

06:40 - 14:35LHR-SFO

15h 55m1 stop

£444Scandinavian Airlines

Find Deal

Mon, 1 Dec - Sat, 6 Dec

00:30 - 07:05SFO-LHR

22h 35m1 stop

06:30 - 11:50LHR-SFO

13h 20m1 stop

£445Delta

Find Deal

Mon, 10 Nov - Thu, 4 Dec

17:30 - 12:00SFO-LHR

10h 30mdirect

11:45 - 15:00LHR-SFO

11h 15mdirect

£449British Airways

Find Deal

Wed, 11 Feb - Wed, 18 Feb

11:20 - 11:50SFO-LHR

16h 30m1 stop

06:35 - 14:50LHR-SFO

16h 15m1 stop

£458United Airlines

Find Deal

Wed, 19 Nov - Wed, 26 Nov

11:20 - 11:50SFO-LHR

16h 30m1 stop

06:50 - 21:22LHR-SFO

22h 32m2 stops

£459Multiple Airlines

Find Deal

Wed, 19 Nov - Wed, 26 Nov

08:25 - 07:10SFO-LHR

14h 45m1 stop

09:00 - 16:30LHR-SFO

15h 30m1 stop

£460United Airlines

Find Deal

Fri, 5 Dec - Fri, 12 Dec

11:20 - 11:50SFO-LHR

16h 30m1 stop

09:00 - 20:50LHR-SFO

19h 50m2 stops

£464Air Canada

Find Deal

Wed, 12 Nov - Thu, 20 Nov

17:30 - 12:00SFO-LHR

10h 30mdirect

11:45 - 15:00LHR-SFO

11h 15mdirect

£468British Airways

Find Deal

Wed, 7 Jan - Fri, 23 Jan

00:43 - 07:30SFO-LHR

22h 47m1 stop

06:50 - 21:22LHR-SFO

21h 32m2 stops

£469Multiple Airlines

Find Deal

Tue, 3 Mar - Fri, 20 Mar

07:30 - 11:20SFO-LHR

19h 50m2 stops

09:00 - 20:53LHR-SFO

19h 53m2 stops

£476Air Canada

Find Deal

Thu, 8 Jan - Thu, 22 Jan

Scandinavian Airlines flights from San Francisco to London Heathrow Airport

Our best Scandinavian Airlines deals on San Francisco to London Heathrow Airport flight tickets

Scandinavian Airlines

1 Dec

SFO16:40San Francisco

18h 10m

2 stops

LHR18:50London Heathrow

6 Dec

LHR06:40London Heathrow

15h 55m

1 stop

SFO14:35San Francisco

£444

Find similar

Scandinavian Airlines

15 Nov

SFO16:40San Francisco

19h 15m

2 stops

LHR19:55London Heathrow

21 Nov

LHR15:35London Heathrow

31h 00m

2 stops

SFO14:35San Francisco

£446

Find similar

Scandinavian Airlines

13 Nov

SFO16:40San Francisco

15h 45m

2 stops

LHR16:25London Heathrow

5 Dec

LHR19:50London Heathrow

26h 45m

2 stops

SFO14:35San Francisco

£448

Find similar

British Airways flights from San Francisco to London Heathrow Airport

Our best British Airways deals on San Francisco to London Heathrow Airport flight tickets

British Airways

11 Feb

SFO17:30San Francisco

10h 30m

LHR12:00London Heathrow

18 Feb

LHR11:45London Heathrow

11h 15m

SFO15:00San Francisco

£449

Find similar

British Airways

7 Jan

SFO17:30San Francisco

10h 30m

LHR12:00London Heathrow

23 Jan

LHR11:45London Heathrow

11h 15m

SFO15:00San Francisco

£468

Find similar

British Airways

6 Jan

SFO22:30San Francisco

15h 40m

1 stop

LHR22:10London Heathrow

23 Jan

LHR11:45London Heathrow

11h 15m

SFO15:00San Francisco

£475

Find similar

momondo 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 1/12

16:40-18:50

2 stops18h 10m

London Heathrow

Sat 6/12

06:40-14:35

1 stop15h 55m

£444

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Mon 10/11

00:30-07:05

1 stop22h 35m

London Heathrow

Thu 4/12

06:30-11:50

1 stop13h 20m

£445

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Wed 11/2

17:30-12:00

Nonstop10h 30m

London Heathrow

Wed 18/2

11:45-15:00

Nonstop11h 15m

£449

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Wed 19/11

11:20-11:50

1 stop16h 30m

London Heathrow

Wed 26/11

06:35-14:50

1 stop16h 15m

£458

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Wed 19/11

11:20-11:50

1 stop16h 30m

London Heathrow

Wed 26/11

06:50-21:22

2 stops22h 32m

£459

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Fri 5/12

08:25-07:10

1 stop14h 45m

London Heathrow

Fri 12/12

09:00-16:30

1 stop15h 30m

£460

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Wed 12/11

11:20-11:50

1 stop16h 30m

London Heathrow

Thu 20/11

09:00-20:50

2 stops19h 50m

£464

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Wed 7/1

17:30-12:00

Nonstop10h 30m

London Heathrow

Fri 23/1

11:45-15:00

Nonstop11h 15m

£468

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Tue 3/3

00:43-07:30

1 stop22h 47m

London Heathrow

Fri 20/3

06:50-21:22

2 stops21h 32m

£469

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Thu 8/1

07:30-11:20

2 stops19h 50m

London Heathrow

Thu 22/1

09:00-20:53

2 stops19h 53m

£476

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from San Francisco to London Heathrow Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Delays

Other information

What is the cheapest month to fly to London Heathrow Airport?

In general, October is the cheapest month to fly from San Francisco to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £505. The month of February is another great option to travel to London Heathrow Airport, with average flight prices from San Francisco averaging around £508.

What is the cheapest day to depart on your flight to London Heathrow Airport?

On average, the least expensive day to fly to London Heathrow Airport from San Francisco is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as £508. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Thursday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Thursday is £658.

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the evening. momondo users have found flights departing from San Francisco to London Heathrow Airport in the evening for as low as £553. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying at midday when prices are £814 on average. Flights to London Heathrow Airport from San Francisco at midday are generally more expensive because this time of day is more convenient for travellers’ schedules.

What is the cheapest San Francisco to London Heathrow flight route?

Fly from San Francisco to London Heathrow for the best San Francisco - London Heathrow flight prices

How far in advance should I book a flight to London Heathrow Airport?

You are more likely to see cheaper flights to London Heathrow Airport from San Francisco when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around £583 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from San Francisco for as low as £550 on momondo.

What cabin class options are available on San Francisco to London Heathrow flights?

There are 4 cabin classes available to choose from on San Francisco to London Heathrow flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on San Francisco to London Heathrow Airport flights?

You could potentially save up to 9% on your flight if you consider stops on a San Francisco to London Heathrow Airport flight.

How have San Francisco to London Heathrow Airport flight prices changed over time?

As of October 2025, prices for San Francisco to London Heathrow Airport flights are approximately 29% more expensive when compared to flights at the same time last year.

When to book flights from San Francisco to London Heathrow Airport

Are you open to changing your travel dates? Check out the ideal times to fly from San Francisco to London Heathrow Airport according to our flight data. Find out which month and days have the cheapest flights.

Estimated return price

Cheap San Francisco to London Heathrow Airport (SFO to LHR) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from San Francisco to London Heathrow Airport

Best price found	£291
Fastest flight time	10h 10m
Direct flights	Every day

The best one-way flight to London Heathrow Airport from San Francisco in the past 72 hours is £291. The best return flight deal from San Francisco to London Heathrow Airport found on momondo in the last 72 hours is £523.

The fastest flight from San Francisco to London Heathrow Airport takes 10h 10m

Direct flights go from San Francisco to London Heathrow Airport every day.

Search flight deals

How far is San Francisco to London Heathrow by plane?
The distance between San Francisco and London Heathrow is about 5341.3 mi. Typically, this will take 10h 10m by plane in normal conditions.
When did momondo last update prices for flights from San Francisco Airport to London Heathrow Airport?
Prices for flights from San Francisco Airport to London Heathrow Airport are refreshed on a daily basis.
How many operators does momondo search for flights from San Francisco Airport to London Heathrow Airport?
There are 7 operators available for flights from San Francisco Airport to London Heathrow Airport as of October 2025.
How old do you have to be to fly from San Francisco Airport to London Heathrow Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from San Francisco Airport to London Heathrow Airport.
What documentation or ID do you need to fly to London Heathrow Airport?
The travel and health documents required for your trip to London Heathrow Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at London Heathrow Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from San Francisco to London Heathrow Airport?
momondo data reveals that the most frequently booked plane model on the route from San Francisco to London Heathrow Airport is Boeing 777, representing 34.21% of all bookings. The subsequent popular models are Boeing 787-9 Dreamliner at 19.42%, Airbus A380-800 at 19.06%, and Airbus A380 at 6.97%.
What is the most popular airline from San Francisco to London Heathrow Airport?
Based on momondo bookings for this flight route, the most popular airline on flight routes from San Francisco to London Heathrow Airport is Virgin Atlantic (28% of total bookings). The next most popular airlines are United Airlines (28%), British Airways (16%), and Lufthansa (14%).

Best airlines flying from San Francisco to London Heathrow Airport

Compare and see reviews for airlines that fly from San Francisco to London Heathrow Airport with momondo

Airline	Rating	Free Cancellation	Price
Scandinavian Airlines	PriceFrom £362	Free Cancellation	Rating 7.4 1,548 reviews	Search Scandinavian Airlines flights
KLM	PriceFrom £371	Free Cancellation	Rating 7.7 1,406 reviews	Search KLM flights
Virgin Atlantic	PriceFrom £375	Free Cancellation	Rating 7.5 671 reviews	Search Virgin Atlantic flights
British Airways	PriceFrom £394	Free Cancellation	Rating 6.7 7,488 reviews	Search British Airways flights
United Airlines	PriceFrom £425	Free Cancellation	Rating 7.4 8,995 reviews	Search United Airlines flights
Iberia	PriceFrom £433	Free Cancellation	Rating 7.0 3,003 reviews	Search Iberia flights
Lufthansa	PriceFrom £438	Free Cancellation	Rating 6.8 7,542 reviews	Search Lufthansa flights

KLM Flights From San Francisco to London Heathrow Airport
The lowest priced KLM flight from San Francisco to London Heathrow Airport from the last 72 hours was £371. Generally, KLM has 4 flights on this route every week with an average price of £482. KLM is rated 7.7/10 by our users.
Virgin Atlantic Flights From San Francisco to London Heathrow Airport
Across 671 Virgin Atlantic reviews on momondo, the average score is 7.5/10. Virgin Atlantic flies from San Francisco to London Heathrow Airport about 4 times each week, with ticket deals ranging from £375 to £577. Price data is based on momondo searches in the last 72 hours.

Eastbourne

Milton Keynes

Luton

Gatwick

Maidstone

Slough

Northampton

Swindon

Canterbury

Stratford-upon-Avon

Southend-on-Sea

Ipswich

Ilford

Poole

Guildford

Swanage

Colchester

Dover

Hayes

Chelmsford

Why use momondo?

Why should I use momondo to find a flight deal from San Francisco to London?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from San Francisco to London . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from San Francisco to London with flexible booking policies on momondo?

Flights from San Francisco to London with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from San Francisco to London?

momondo provides multiple filters to help you find the best flight to London from San Francisco. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from San Francisco to London right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of San Francisco to London flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your London Heathrow Airport trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Start using Trips

Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

1 adult

Sun 30/11

Sun 7/12

Email me momondo's favourite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to London

Popular Cities in the United Kingdom

Flights to London Gatwick Airportfrom £39

Flights to London City Airportfrom £137

Flights to London Stansted Airportfrom £30

Flights to London Luton Airportfrom £36

Flights to London Southend Airportfrom £103

Flights to Belfast Intl Airportfrom £30

Flights to Glasgow Intl Airportfrom £30

Flights to Belfast City Airportfrom £36

Flights to Glasgow Prestwick Airport

Flights to Lerwick Sumburgh Airport

Cheap flights from San Francisco to London from £272

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Francisco to London departing on 3/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from San Francisco to London

Cheap return flights

Cheap one-way flights

Cheap last-minute flights

Cheap direct flights

Scandinavian Airlines flights from San Francisco to London Heathrow Airport

Our best Scandinavian Airlines deals on San Francisco to London Heathrow Airport flight tickets

British Airways flights from San Francisco to London Heathrow Airport

Our best British Airways deals on San Francisco to London Heathrow Airport flight tickets

momondo Fare Finder

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

See travel insights to London from

How to get the cheapest flight ticket from San Francisco to London Heathrow Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to London Heathrow Airport?

What is the cheapest day to depart on your flight to London Heathrow Airport?

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

What is the cheapest San Francisco to London Heathrow flight route?

Fly from San Francisco to London Heathrow for the best San Francisco - London Heathrow flight prices

How far in advance should I book a flight to London Heathrow Airport?

What cabin class options are available on San Francisco to London Heathrow flights?

There are 4 cabin classes available to choose from on San Francisco to London Heathrow flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on San Francisco to London Heathrow Airport flights?

You could potentially save up to 9% on your flight if you consider stops on a San Francisco to London Heathrow Airport flight.

How have San Francisco to London Heathrow Airport flight prices changed over time?

As of October 2025, prices for San Francisco to London Heathrow Airport flights are approximately 29% more expensive when compared to flights at the same time last year.

What is the cheapest airline that flies from San Francisco to London Heathrow?

British Airways, JetBlue, and Austrian Airlines are the most popular carriers operating from San Francisco to London Heathrow

Which airlines fly to London Heathrow Airport?

How often are flights from San Francisco to London delayed?

Historically, on average around 12% of flights between San Francisco and London have experienced a delay on any given week. The average delay length over the past 12 months has been 157 minutes.

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

Generally, flights departing at night tend to experience fewer delays. Flights departing in the early afternoon have, in the past, seen delays more frequently in comparison.

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

Wednesday is statistically the day of the week that experiences the fewest delays on this flight route. Thursday has historically seen more delays on average compared to the rest of the week.

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

According to our data, Virgin Atlantic have had the fewest delays on this route over the last 12 months, with about 9% of their flights experiencing any sort of delay.

How many flights depart from San Francisco to London Heathrow Airport on average per day?

The number of flights available between San Francisco and London Heathrow Airport is 16 per day as of October 2025. The most frequent departure time is 18:00, with 55% of daily flights leaving in the evening.

How many flights depart from San Francisco to London Heathrow Airport on average per week?

As of October 2025, there are 118 flights per week flying from San Francisco to London Heathrow Airport. The most common day of the week flights depart is Wed, with 26% of flights taking off on this day.

When to book flights from San Francisco to London Heathrow Airport

Cheap San Francisco to London Heathrow Airport (SFO to LHR) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from San Francisco to London Heathrow Airport

Best price found

Fastest flight time

Direct flights

How far is San Francisco to London Heathrow by plane?

When did momondo last update prices for flights from San Francisco Airport to London Heathrow Airport?

How many operators does momondo search for flights from San Francisco Airport to London Heathrow Airport?

How old do you have to be to fly from San Francisco Airport to London Heathrow Airport?

What documentation or ID do you need to fly to London Heathrow Airport?

What is the most popular plane model from San Francisco to London Heathrow Airport?

What is the most popular airline from San Francisco to London Heathrow Airport?

Best airlines flying from San Francisco to London Heathrow Airport

Compare and see reviews for airlines that fly from San Francisco to London Heathrow Airport with momondo

KLM Flights From San Francisco to London Heathrow Airport

Virgin Atlantic Flights From San Francisco to London Heathrow Airport

Travelling to a place near London?

Why use momondo?

Why should I use momondo to find a flight deal from San Francisco to London?

Can I find flights from San Francisco to London with flexible booking policies on momondo?

How can momondo help me find flights from San Francisco to London?

I’m not ready to book a flight from San Francisco to London right now. Can momondo alert me if prices change?

An easier way to manage your London Heathrow Airport trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to London

Popular Cities in the United Kingdom