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.

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 $490.

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

JetBlue, Air Canada, and United Airlines 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 day?

The number of flights available between San Francisco and London Heathrow Airport is 28 per day as of November 2025. The most frequent departure time is 5:00PM, with 72% of daily flights leaving in the afternoon.

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

Copenhagen (CPH) was the most common stop: 41% of momondo users choosing 1-stop flights on this route connected there.

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.

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 connection time from San Francisco to London Heathrow Airport?

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

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 43% of people opting to fly with this airline when traveling to London Heathrow Airport. Keep in mind that there are 17 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.

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

As of November 2025, 199 flights take off from San Francisco and land in London Heathrow Airport each week. The most common flight departure day for this route is Wed, with 16% of weekly flights taking off on this day.

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.

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 17 operators available for flights from San Francisco Airport to London Heathrow Airport as of November 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.

$368 Cheap Flights from San Francisco to London Heathrow Airport in 2025/26

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4:40 pm - 6:50 pmSFO-LHR

18h 10m2 stops

9:05 pm - 2:35 pmLHR-SFO

25h 30m2 stops

$591Scandinavian Airlines

Find Deal

Sun, Nov 30 - Thu, Dec 4

3:35 pm - 5:40 pmSFO-LHR

18h 05m2 stops

5:00 pm - 2:35 pmLHR-SFO

29h 35m1 stop

$592Scandinavian Airlines

Find Deal

Mon, Dec 8 - Sat, Dec 13

4:40 pm - 6:30 pmSFO-LHR

17h 50m1 stop

7:50 pm - 2:35 pmLHR-SFO

26h 45m2 stops

$593Scandinavian Airlines

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Sat, Dec 6 - Fri, Dec 12

4:45 pm - 5:40 pmSFO-LHR

16h 55m1 stop

6:40 am - 2:40 pmLHR-SFO

16h 00m1 stop

$594Scandinavian Airlines

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Mon, Apr 13 - Mon, Apr 27

4:15 pm - 1:30 pmSFO-LHR

13h 15m1 stop

11:10 am - 7:35 pmLHR-SFO

16h 25m1 stop

$595Lufthansa

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Wed, Dec 10 - Thu, Jan 15

4:40 pm - 4:00 pmSFO-LHR

15h 20m1 stop

6:40 am - 2:35 pmLHR-SFO

15h 55m1 stop

$596Scandinavian Airlines

Find Deal

Sun, Feb 22 - Fri, Feb 27

4:40 pm - 4:00 pmSFO-LHR

15h 20m1 stop

6:40 am - 3:35 pmLHR-SFO

15h 55m1 stop

$597Scandinavian Airlines

Find Deal

Thu, Mar 5 - Sat, Mar 14

1:08 pm - 5:40 pmSFO-LHR

20h 32m2 stops

7:30 pm - 11:08 pmLHR-SFO

35h 38m2 stops

$598Scandinavian Airlines

Find Deal

Wed, Feb 18 - Mon, Feb 23

4:03 pm - 6:30 pmSFO-LHR

18h 27m2 stops

10:20 am - 10:54 pmLHR-SFO

20h 34m2 stops

$599Scandinavian Airlines

Find Deal

Tue, Jan 20 - Tue, Jan 27

5:30 pm - 12:00 pmSFO-LHR

10h 30mnonstop

3:25 pm - 6:45 pmLHR-SFO

11h 20mnonstop

$600British Airways

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Fri, Feb 6 - Tue, Feb 10

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

Dec 8

SFO3:35 pmSan Francisco

18h 05m

2 stops

LHR5:40 pmLondon Heathrow

Dec 12

LHR6:40 amLondon Heathrow

15h 55m

1 stop

SFO2:35 pmSan Francisco

$592

Find similar

Scandinavian Airlines

Jan 10

SFO4:40 pmSan Francisco

15h 45m

2 stops

LHR4:25 pmLondon Heathrow

Jan 18

LHR7:50 pmLondon Heathrow

26h 45m

2 stops

SFO2:35 pmSan Francisco

$593

Find similar

Scandinavian Airlines

Nov 28

SFO4:40 pmSan Francisco

15h 20m

1 stop

LHR4:00 pmLondon Heathrow

Dec 7

LHR5:00 pmLondon Heathrow

29h 35m

1 stop

SFO2:35 pmSan Francisco

$598

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Air Canada flights from San Francisco to London Heathrow Airport

Our best Air Canada deals on San Francisco to London Heathrow Airport flight tickets

Air Canada

Nov 26

SFO11:20 amSan Francisco

16h 30m

1 stop

LHR11:50 amLondon Heathrow

Dec 3

LHR6:50 amLondon Heathrow

22h 32m

2 stops

SFO9:22 pmSan Francisco

$595

Find similar

Air Canada

Jan 8

SFO6:00 pmSan Francisco

33h 50m

1 stop

LHR11:50 amLondon Heathrow

Jan 18

LHR6:50 amLondon Heathrow

22h 32m

2 stops

SFO9:22 pmSan Francisco

$603

Find similar

Air Canada

Nov 25

SFO1:20 pmSan Francisco

14h 30m

1 stop

LHR11:50 amLondon Heathrow

Dec 4

LHR9:00 amLondon Heathrow

19h 50m

2 stops

SFO8:50 pmSan Francisco

$610

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momondo Fare Finder

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San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Sun 11/30

4:40 pm-6:50 pm

2 stops18h 10m

London Heathrow

Thu 12/4

9:05 pm-2:35 pm

2 stops25h 30m

$591

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Mon 12/8

3:35 pm-5:40 pm

2 stops18h 05m

London Heathrow

Sat 12/13

5:00 pm-2:35 pm

1 stop29h 35m

$592

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Sat 12/6

4:40 pm-6:30 pm

1 stop17h 50m

London Heathrow

Fri 12/12

7:50 pm-2:35 pm

2 stops26h 45m

$593

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Mon 4/13

4:45 pm-5:40 pm

1 stop16h 55m

London Heathrow

Mon 4/27

6:40 am-2:40 pm

1 stop16h 00m

$594

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Wed 12/10

4:15 pm-1:30 pm

1 stop13h 15m

London Heathrow

Thu 1/15

11:10 am-7:35 pm

1 stop16h 25m

$595

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Sun 2/22

4:40 pm-4:00 pm

1 stop15h 20m

London Heathrow

Fri 2/27

6:40 am-2:35 pm

1 stop15h 55m

$596

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Thu 3/5

4:40 pm-4:00 pm

1 stop15h 20m

London Heathrow

Sat 3/14

6:40 am-3:35 pm

1 stop15h 55m

$597

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Wed 2/18

1:08 pm-5:40 pm

2 stops20h 32m

London Heathrow

Mon 2/23

7:30 pm-11:08 pm

2 stops35h 38m

$598

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Tue 1/20

4:03 pm-6:30 pm

2 stops18h 27m

London Heathrow

Tue 1/27

10:20 am-10:54 pm

2 stops20h 34m

$599

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Fri 2/6

5:30 pm-12:00 pm

Nonstop10h 30m

London Heathrow

Tue 2/10

3:25 pm-6:45 pm

Nonstop11h 20m

$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

Airlines

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 $816. The most expensive day to fly to London Heathrow Airport is Saturday, with ticket prices averaging around $949.

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 $857. 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 $768 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 $727 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 22% 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 November 2025, prices for San Francisco to London Heathrow Airport flights are approximately 22% 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 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	$418
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 $418. The best round-trip flight deal from San Francisco to London Heathrow Airport found on momondo in the last 72 hours is $696.

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 17 operators available for flights from San Francisco Airport to London Heathrow Airport as of November 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 (34.27% of total bookings). The next most popular plane models are Airbus A380-800 (20.31%), Boeing 787-9 Dreamliner (18.61%), and Airbus A380 (6.89%).
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 34% of the total bookings. Other popular airlines include British Airways with 23%, Virgin Atlantic with 12%, and Iberia with 11%.

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 2,902 reviews	Search JetBlue flights
Scandinavian Airlines	PriceFrom $328	Free Cancellation	Rating 7.4 1,584 reviews	Search Scandinavian Airlines flights
TAP AIR PORTUGAL	PriceFrom $426	Free Cancellation	Rating 7.1 2,070 reviews	Search TAP AIR PORTUGAL flights
Finnair	PriceFrom $465	Free Cancellation	Rating 7.6 1,334 reviews	Search Finnair flights
Alaska Airlines	PriceFrom $494	Free Cancellation	Rating 8.0 11,326 reviews	Search Alaska Airlines flights
SWISS	PriceFrom $513	Free Cancellation	Rating 7.5 1,788 reviews	Search SWISS flights
British Airways	PriceFrom $542	Free Cancellation	Rating 6.7 7,533 reviews	Search British Airways flights
Delta	PriceFrom $552	Free Cancellation	Rating 7.9 8,002 reviews	Search Delta flights
Lufthansa	PriceFrom $557	Free Cancellation	Rating 6.8 7,579 reviews	Search Lufthansa flights
United Airlines	PriceFrom $570	Free Cancellation	Rating 7.4 9,029 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 13 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 8,002 reviews) operates around 7 flights from San Francisco to London Heathrow Airport in any given week. The average Delta airfare for this route is around $839, with deals from around $552 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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Swindon

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 $368

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 11/26. 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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Use the filters below to find and compare flights from San Francisco to London Heathrow Airport that are best for you.

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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 $816. The most expensive day to fly to London Heathrow Airport is Saturday, with ticket prices averaging around $949.

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 22% 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 November 2025, prices for San Francisco to London Heathrow Airport flights are approximately 22% 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?

JetBlue, Air Canada, and United Airlines 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: 41% 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 $490.

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 28 per day as of November 2025. The most frequent departure time is 5:00PM, with 72% of daily flights leaving in the afternoon.

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

As of November 2025, 199 flights take off from San Francisco and land in London Heathrow Airport each week. The most common flight departure day for this route is Wed, with 16% 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?