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

JetBlue, WestJet, and TAP AIR PORTUGAL 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 43 per day as of July 2025. The most frequent departure time is 4:00PM, with 60% of daily flights leaving in the afternoon.

What airlines fly to London Heathrow Airport?

United Airlines, British Airways and Iberia 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 18 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 July 2025, 301 flights take off from San Francisco and land in London Heathrow Airport each week. The most common flight departure day for this route is Mon, with 14% of weekly flights taking off on this day.

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 July 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.

$151 Cheap Flights from San Francisco to London Heathrow Airport in 2025

Q: What is the typical price of a round-trip flight between San Francisco and London Heathrow Airport?

Prices are currently low for flights on this route. Typical prices usually range from $810 to $1,069. The lowest price recently found on this route was $151.

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize 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 round-trip flights

11:55 am - 8:45 pmSFO-LHR

24h 50m1 stop

7:25 am - 3:41 pmLHR-SFO

16h 16m1 stop

$151JetBlue

Find Deal

lun., nov. 3 - vie., nov. 7

6:00 am - 8:45 pmSFO-LHR

30h 45m1 stop

8:15 am - 8:47 pmLHR-SFO

20h 32m1 stop

$195JetBlue

Find Deal

sáb., ago. 16 - sáb., ago. 23

10:00 am - 9:50 amSFO-LHR

15h 50m1 stop

6:30 am - 11:45 amLHR-SFO

13h 15m1 stop

$470Virgin Atlantic

Find Deal

lun., ago. 18 - jue., ago. 28

1:00 pm - 7:25 amSFO-LHR

10h 25mnonstop

4:15 pm - 7:10 pmLHR-SFO

10h 55mnonstop

$474Lufthansa

Find Deal

mié., ago. 6 - mié., ago. 20

4:35 pm - 2:15 pmSFO-LHR

13h 40m1 stop

11:15 am - 2:15 pmLHR-SFO

11h 00mnonstop

$476Virgin Atlantic

Find Deal

lun., ago. 18 - jue., ago. 28

8:30 am - 6:30 amSFO-LHR

14h 00m1 stop

12:00 pm - 8:02 pmLHR-SFO

16h 02m1 stop

$480Lufthansa

Find Deal

mié., ago. 6 - mié., ago. 20

4:30 pm - 10:55 amSFO-LHR

10h 25mnonstop

3:25 pm - 7:45 pmLHR-SFO

11h 20mnonstop

$495British Airways

Find Deal

mar., oct. 7 - jue., oct. 30

7:20 pm - 1:45 pmSFO-LHR

10h 25mnonstop

10:45 am - 1:50 pmLHR-SFO

11h 05mnonstop

$496British Airways

Find Deal

lun., sep. 29 - mié., oct. 8

1:05 pm - 7:25 amSFO-LHR

10h 20mnonstop

8:55 am - 5:25 pmLHR-SFO

15h 30m1 stop

$497United Airlines

Find Deal

mié., oct. 8 - jue., oct. 30

1:05 pm - 7:25 amSFO-LHR

10h 20mnonstop

8:40 am - 4:10 pmLHR-SFO

15h 30m1 stop

$499United Airlines

Find Deal

mar., sep. 9 - vie., sep. 19

JetBlue flights from San Francisco to London Heathrow Airport

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

JetBlue

Nov 3

SFO11:55 amSan Francisco

24h 50m

1 stop

LHR8:45 pmLondon Heathrow

Nov 7

LHR7:25 amLondon Heathrow

16h 16m

1 stop

SFO3:41 pmSan Francisco

$151

Find similar

JetBlue

Aug 16

SFO6:00 amSan Francisco

30h 45m

1 stop

LHR8:45 pmLondon Heathrow

Aug 23

LHR8:15 amLondon Heathrow

20h 32m

1 stop

SFO8:47 pmSan Francisco

$195

Find similar

JetBlue

Jul 26

SFO7:40 amSan Francisco

29h 05m

1 stop

LHR8:45 pmLondon Heathrow

Aug 2

LHR8:25 amLondon Heathrow

23h 14m

1 stop

SFO11:39 pmSan Francisco

$351

Find similar

TAP AIR PORTUGAL flights from San Francisco to London Heathrow Airport

Our best TAP AIR PORTUGAL deals on San Francisco to London Heathrow Airport flight tickets

TAP AIR PORTUGAL

Oct 21

SFO4:20 pmSan Francisco

21h 40m

1 stop

LHR10:00 pmLondon Heathrow

Nov 4

LHR6:30 pmLondon Heathrow

28h 00m

1 stop

SFO2:30 pmSan Francisco

$424

Find similar

TAP AIR PORTUGAL

Nov 10

SFO4:35 pmSan Francisco

22h 05m

1 stop

LHR10:40 pmLondon Heathrow

Nov 22

LHR6:00 amLondon Heathrow

16h 45m

1 stop

SFO2:45 pmSan Francisco

$425

Find similar

TAP AIR PORTUGAL

Sep 9

SFO6:45 pmSan Francisco

19h 15m

1 stop

LHR10:00 pmLondon Heathrow

Sep 22

LHR6:45 pmLondon Heathrow

26h 50m

1 stop

SFO1:35 pmSan Francisco

$426

Find similar

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

Other information

What is the typical price of a round-trip flight between San Francisco and London Heathrow Airport?

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 $642. 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 $668.

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 $807. The most expensive day to fly to London Heathrow Airport is Saturday, with ticket prices averaging around $944.

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 $852. 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 $990.

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 $770 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 $712 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.

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

As of July 2025, prices for San Francisco to London Heathrow Airport flights are approximately 18% 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	$165
Fastest flight time	10h 20m
Direct flights	Every day

The best one-way flight to London Heathrow Airport from San Francisco in the past 72 hours is $165. The best round-trip flight deal from San Francisco to London Heathrow Airport found on momondo in the last 72 hours is $151.

The fastest flight from San Francisco to London Heathrow Airport takes 10h 20m

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 20m 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 July 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 (31.67% of total bookings). The next most popular plane models are Boeing 787-9 Dreamliner (28.19%), Airbus A380-800 (16.68%), and Boeing 787 Dreamliner (10.96%).
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 33% of the total bookings. Other popular airlines include British Airways with 21%, Iberia with 12%, and Virgin Atlantic 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
Scandinavian Airlines	PriceFrom $337	Free Cancellation	Rating 7.3 1,424 reviews	Search Scandinavian Airlines flights
TAP AIR PORTUGAL	PriceFrom $440	Free Cancellation	Rating 7.1 1,922 reviews	Search TAP AIR PORTUGAL flights
SWISS	PriceFrom $558	Free Cancellation	Rating 7.5 1,661 reviews	Search SWISS flights
British Airways	PriceFrom $572	Free Cancellation	Rating 6.6 7,151 reviews	Search British Airways flights
Iberia	PriceFrom $572	Free Cancellation	Rating 7.0 2,842 reviews	Search Iberia flights
Finnair	PriceFrom $573	Free Cancellation	Rating 7.6 1,316 reviews	Search Finnair flights
American Airlines	PriceFrom $580	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Lufthansa	PriceFrom $582	Free Cancellation	Rating 6.8 7,216 reviews	Search Lufthansa flights
JetBlue	PriceFrom $584	Free Cancellation	Rating 7.3 2,910 reviews	Search JetBlue flights
KLM	PriceFrom $586	Free Cancellation	Rating 7.8 1,374 reviews	Search KLM flights

Delta Flights From San Francisco to London Heathrow Airport
Delta flight deals from San Francisco to London Heathrow Airport start from $590 round-trip. Over the 14 Delta flights for this route in a normal week, average airfare is usually $806 round-trip - but some users have found much cheaper deals with momondo.
Alaska Airlines Flights From San Francisco to London Heathrow Airport
Alaska Airlines (8.0/10 from 10,000 reviews) operates around 14 flights from San Francisco to London Heathrow Airport in any given week. The average Alaska Airlines airfare for this route is around $936, with deals from around $789 rare but found on momondo. Referenced prices are for round-trip San Francisco to London Heathrow Airport flight searches in the last 72 hours.

Gatwick

Hounslow

Slough

Dover

Luton

Croydon

Dartford

Guildford

Stansted

Milton Keynes

Hayes

Salisbury

Ilford

Swindon

Colchester

Stratford-upon-Avon

Chelmsford

Canterbury

Watford

Richmond

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.

An easier way to manage your London Heathrow Airport trip

We make it super easy to schedule, organize 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

mar. 7/22

mar. 7/29

Email me momondo's favorite 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 $344

Flights to London City Airportfrom $471

Flights to London Stansted Airportfrom $367

Flights to London Luton Airportfrom $374

Flights to London Southend Airportfrom $503

Flights to Glasgow Intl Airportfrom $392

Flights to Belfast Intl Airportfrom $470

Flights to Belfast City Airportfrom $517

Cheap flights from San Francisco to London from $151

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from San Francisco to London departing on 11/3. 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 and deals

Big names and 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 round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

JetBlue flights from San Francisco to London Heathrow Airport

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

TAP AIR PORTUGAL flights from San Francisco to London Heathrow Airport

Our best TAP AIR PORTUGAL deals on San Francisco to London Heathrow Airport flight tickets

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 typical price of a round-trip flight between San Francisco and London Heathrow Airport?

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 $807. The most expensive day to fly to London Heathrow Airport is Saturday, with ticket prices averaging around $944.

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.

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

As of July 2025, prices for San Francisco to London Heathrow Airport flights are approximately 18% cheaper when compared to flights at the same time last year.

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

JetBlue, WestJet, and TAP AIR PORTUGAL are the most popular carriers operating from San Francisco to London Heathrow

What airlines fly to London Heathrow Airport?

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 43 per day as of July 2025. The most frequent departure time is 4:00PM, with 60% of daily flights leaving in the afternoon.

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

As of July 2025, 301 flights take off from San Francisco and land in London Heathrow Airport each week. The most common flight departure day for this route is Mon, with 14% 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

Delta Flights From San Francisco to London Heathrow Airport

Alaska Airlines 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?

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, organize 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

Popular flights according to clicks in the last 7 days on momondo