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 158 minutes.

Which layover airport has the shortest travel time from San Francisco to London Heathrow Airport?

Flights connecting via Dublin (DUB) have the shortest average one-way travel time: 13h 16m.

Which layover airport has the shortest connection time from San Francisco to London Heathrow Airport?

Frankfurt am Main (FRA) has the shortest average layover time for this route: 1h 28m.

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

United Airlines and Lufthansa are the most popular carriers operating from San Francisco to London Heathrow

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

As of December 2025, 212 flights take off from San Francisco and land in London Heathrow Airport each week. The most common flight departure day for this route is Tue, with 15% of weekly flights taking off on this day.

Which airport is the most popular layover for flights between San Francisco and London Heathrow Airport?

Copenhagen (CPH) was the most common stop: 29% of momondo users choosing 1-stop flights on this route connected there.

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

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

Which layover airport offers the lowest fares from San Francisco to London Heathrow Airport?

Flights via Lisbon (LIS) offer the lowest average round-trip price of $532.

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 30 per day as of December 2025. The most frequent departure time is 5:00PM, with 80% of daily flights leaving in the afternoon.

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

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

What airlines fly to London Heathrow Airport?

United Airlines, British Airways and Virgin Atlantic are the top three most popular airlines that fly to London Heathrow Airport from San Francisco according to our data. United Airlines is the first choice among our users, with 44% of people opting to fly with this airline when traveling to London Heathrow Airport. Keep in mind that there are 18 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 most punctual flight time for San Francisco to London flights?

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

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 refresh daily.

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

There are 18 operators available for flights from San Francisco Airport to London Heathrow Airport as of December 2025.

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify 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 necessary travel and health documents for your London Heathrow Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$384 Cheap Flights from San Francisco to London Heathrow Airport in 2025/26

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7:55 pm - 10:05 pm

SFO

LHR

18h 10m1 stop

8:00 am - 5:35 pm

LHR

SFO

17h 35m1 stop

$591TAP AIR PORTUGAL

Thu, May 14 - Sat, May 23

4:35 pm - 11:00 am

SFO

LHR

10h 25mnonstop

10:45 am - 1:50 pm

LHR

SFO

11h 05mnonstop

$592British Airways

Wed, Apr 29 - Tue, May 5

5:40 pm - 2:35 pm

SFO

LHR

37h 55m2 stops

6:40 am - 2:40 pm

LHR

SFO

16h 00m1 stop

$593Scandinavian Airlines

Sat, Mar 14 - Tue, Apr 14

10:55 pm - 8:10 pm

SFO

LHR

13h 15m1 stop

11:40 am - 2:40 pm

LHR

SFO

11h 00mnonstop

$594Delta

Sun, Jan 11 - Tue, Jan 27

5:40 pm - 5:40 pm

SFO

LHR

17h 00m1 stop

10:20 am - 2:40 pm

LHR

SFO

36h 20m1 stop

$595Scandinavian Airlines

Sun, Mar 15 - Sun, Apr 12

12:55 pm - 10:40 am

SFO

LHR

13h 45m1 stop

8:45 am - 4:10 pm

LHR

SFO

15h 25m1 stop

$596Multiple Airlines

Wed, Apr 15 - Wed, Apr 29

5:25 pm - 12:00 pm

SFO

LHR

10h 35mnonstop

9:00 am - 4:30 pm

LHR

SFO

15h 30m1 stop

$597United Airlines

Thu, Jan 15 - Tue, Feb 3

5:25 pm - 12:00 pm

SFO

LHR

10h 35mnonstop

1:45 pm - 4:30 pm

LHR

SFO

34h 45m1 stop

$598United Airlines

Thu, Feb 12 - Thu, Feb 26

4:03 pm - 6:30 pm

SFO

LHR

18h 27m2 stops

7:05 am - 1:24 am

LHR

SFO

26h 19m2 stops

$599Scandinavian Airlines

Wed, Feb 4 - Tue, May 5

3:55 pm - 10:40 am

SFO

LHR

10h 45mnonstop

6:30 am - 11:45 am

LHR

SFO

13h 15m1 stop

$600Delta

Sun, Apr 5 - Tue, Apr 14

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

Apr 29

SFO4:35 pmSan Francisco

10h 25m

LHR11:00 amLondon Heathrow

May 5

LHR10:45 amLondon Heathrow

11h 05m

SFO1:50 pmSan Francisco

$592

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British Airways

Mar 31

SFO7:30 pmSan Francisco

10h 25m

LHR1:55 pmLondon Heathrow

Apr 9

LHR10:45 amLondon Heathrow

11h 05m

SFO1:50 pmSan Francisco

$606

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United Airlines flights from San Francisco to London Heathrow Airport

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

United Airlines

Jan 15

SFO7:25 amSan Francisco

22h 05m

1 stop

LHR1:30 pmLondon Heathrow

Feb 3

LHR9:00 amLondon Heathrow

15h 30m

1 stop

SFO4:30 pmSan Francisco

$597

Find similar

United Airlines

Feb 12

SFO12:50 pmSan Francisco

10h 35m

LHR7:25 amLondon Heathrow

Feb 26

LHR9:00 amLondon Heathrow

15h 30m

1 stop

SFO4:30 pmSan Francisco

$598

Find similar

United Airlines

Dec 10

SFO1:20 pmSan Francisco

14h 30m

1 stop

LHR11:50 amLondon Heathrow

Jan 14

LHR11:10 amLondon Heathrow

16h 25m

1 stop

SFO7:35 pmSan Francisco

$604

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momondo Fare Finder

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San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Thu 5/14

7:55 pm-10:05 pm

1 stop18h 10m

London Heathrow

Sat 5/23

8:00 am-5:35 pm

1 stop17h 35m

$591

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Wed 4/29

4:35 pm-11:00 am

Nonstop10h 25m

London Heathrow

Tue 5/5

10:45 am-1:50 pm

Nonstop11h 05m

$592

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Sat 3/14

5:40 pm-2:35 pm

2 stops37h 55m

London Heathrow

Tue 4/14

6:40 am-2:40 pm

1 stop16h 00m

$593

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Sun 1/11

10:55 pm-8:10 pm

1 stop13h 15m

London Heathrow

Tue 1/27

11:40 am-2:40 pm

Nonstop11h 00m

$594

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Sun 3/15

5:40 pm-5:40 pm

1 stop17h 00m

London Heathrow

Sun 4/12

10:20 am-2:40 pm

1 stop36h 20m

$595

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Wed 4/15

12:55 pm-10:40 am

1 stop13h 45m

London Heathrow

Wed 4/29

8:45 am-4:10 pm

1 stop15h 25m

$596

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Thu 1/15

5:25 pm-12:00 pm

Nonstop10h 35m

London Heathrow

Tue 2/3

9:00 am-4:30 pm

1 stop15h 30m

$597

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Thu 2/12

5:25 pm-12:00 pm

Nonstop10h 35m

London Heathrow

Thu 2/26

1:45 pm-4:30 pm

1 stop34h 45m

$598

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Wed 2/4

4:03 pm-6:30 pm

2 stops18h 27m

London Heathrow

Tue 5/5

7:05 am-1:24 am

2 stops26h 19m

$599

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Sun 4/5

3:55 pm-10:40 am

Nonstop10h 45m

London Heathrow

Tue 4/14

6:30 am-11:45 am

1 stop13h 15m

$600

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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

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Delays

Layovers

Other information

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

The month of October is, on average, the cheapest month to fly to London Heathrow Airport from San Francisco, with most prices found around $666. If you’re not able to fly to London Heathrow Airport in October, then February is your next best option. Flight prices from San Francisco to London Heathrow Airport during February average around $667.

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

Our data shows that Wednesday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $813. The most expensive day to fly to London Heathrow Airport is Saturday, with ticket prices averaging around $946.

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 afternoon. momondo users have found flights departing from San Francisco to London Heathrow Airport in the afternoon for as low as $856. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights at noon are often more expensive with an average ticket price of $974.

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 $767 when searching weeks out. 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 $725 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 15% 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 December 2025, prices for San Francisco to London Heathrow Airport flights are approximately 6% cheaper 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 round-trip 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	$402
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 $402. The best round-trip flight deal from San Francisco to London Heathrow Airport found on momondo in the last 72 hours is $701.

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?
London Heathrow is 5341.3 mi away from San Francisco. 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 refresh daily.
How many operators does momondo search for flights from San Francisco Airport to London Heathrow Airport?
There are 18 operators available for flights from San Francisco Airport to London Heathrow Airport as of December 2025.
How old do you have to be to fly from San Francisco Airport to London Heathrow Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify 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 necessary travel and health documents for your London Heathrow Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from San Francisco to London Heathrow Airport?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from San Francisco to London Heathrow Airport is Boeing 777 (36.04% of total bookings). The next most popular plane models are Airbus A380-800 (21.67%), Boeing 787-9 Dreamliner (18.55%), and Airbus A380 (6.58%).
What is the most popular airline from San Francisco to London Heathrow Airport?
Based on momondo bookings for flights between San Francisco and London Heathrow Airport, the leading airline is United Airlines, making up 35% of the total bookings. Other popular airlines include British Airways with 23%, Virgin Atlantic with 12%, and Iberia with 10%.

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
JetBlue	PriceFrom $151	Free Cancellation	Rating 7.2 2,898 reviews	Search JetBlue flights
Scandinavian Airlines	PriceFrom $361	Free Cancellation	Rating 7.4 1,592 reviews	Search Scandinavian Airlines flights
TAP AIR PORTUGAL	PriceFrom $371	Free Cancellation	Rating 7.1 2,081 reviews	Search TAP AIR PORTUGAL flights
Lufthansa	PriceFrom $459	Free Cancellation	Rating 6.8 7,613 reviews	Search Lufthansa flights
Alaska Airlines	PriceFrom $494	Free Cancellation	Rating 8.0 11,402 reviews	Search Alaska Airlines flights
SWISS	PriceFrom $513	Free Cancellation	Rating 7.5 1,804 reviews	Search SWISS flights
British Airways	PriceFrom $539	Free Cancellation	Rating 6.7 7,562 reviews	Search British Airways flights
Delta	PriceFrom $541	Free Cancellation	Rating 7.9 8,011 reviews	Search Delta flights
Virgin Atlantic	PriceFrom $570	Free Cancellation	Rating 7.5 675 reviews	Search Virgin Atlantic flights
United Airlines	PriceFrom $571	Free Cancellation	Rating 7.4 9,065 reviews	Search United Airlines flights

Alaska Airlines Flights From San Francisco to London Heathrow Airport
Alaska Airlines flight deals from San Francisco to London Heathrow Airport start from $494 round-trip. Over the 14 Alaska Airlines flights for this route in a normal week, average airfare is usually $655 round-trip - but some users have found much cheaper deals with momondo.
Delta Flights From San Francisco to London Heathrow Airport
Delta (7.9/10 from 8,011 reviews) operates around 6 flights from San Francisco to London Heathrow Airport in any given week. The average Delta airfare for this route is around $835, with deals from around $541 rare but found on momondo. Referenced prices are for round-trip San Francisco to London Heathrow Airport flight searches in the last 72 hours.

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Why use momondo?

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

It is quick and easy to find San Francisco to London flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to London that suits you.

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 helps you find the best flight between San Francisco and London by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Yes. momondo can track prices for San Francisco to London flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Cheap flights from San Francisco to London from $384

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 12/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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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?

Our data shows that Wednesday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $813. The most expensive day to fly to London Heathrow Airport is Saturday, with ticket prices averaging around $946.

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 15% 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 December 2025, prices for San Francisco to London Heathrow Airport flights are approximately 6% cheaper when compared to flights at the same time last year.

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

United Airlines and Lufthansa are the most popular carriers operating from San Francisco to London Heathrow

What 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 158 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 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?

Monday is statistically the day of the week which experiences the fewest number of 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 least number of delays on this route over the last 12 months; with about 9% of their flights experiencing any sort of delay.

Which airport is the most popular layover for flights between San Francisco and London Heathrow Airport?

Copenhagen (CPH) was the most common stop: 29% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from San Francisco to London Heathrow Airport?

Flights via Lisbon (LIS) offer the lowest average round-trip price of $532.

Which layover airport has the shortest travel time from San Francisco to London Heathrow Airport?

Flights connecting via Dublin (DUB) have the shortest average one-way travel time: 13h 16m.

Which layover airport has the shortest connection time from San Francisco to London Heathrow Airport?

Frankfurt am Main (FRA) has the shortest average layover time for this route: 1h 28m.

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 30 per day as of December 2025. The most frequent departure time is 5:00PM, with 80% of daily flights leaving in the afternoon.

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

As of December 2025, 212 flights take off from San Francisco and land in London Heathrow Airport each week. The most common flight departure day for this route is Tue, with 15% of weekly 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

Alaska Airlines Flights From San Francisco to London Heathrow Airport

Delta Flights From San Francisco to London Heathrow Airport

Traveling to a place near London?

Why use momondo?

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