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

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

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

301 flights are operational weekly from San Francisco to London as of July 2025. The most popular departure day for this route is Mon, with 14% of flights per week taking off on this day.

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

The number of flights available between San Francisco and London is 43 per day as of July 2025. The most frequent departure time is 16:00, with 57% of daily flights leaving in the afternoon.

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

Prices for flights from San Francisco Airport to London are updated daily.

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

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 stopovers 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.

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

The necessary travel and health documents for your London 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 licence 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.

$449 Cheap Flights from San Francisco to London in 2025

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

Prices are currently low for flights on this route. Typical prices usually range from $1,237 to $1,641. The lowest price recently found on this route was $647.

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Find the cheapest flights from San Francisco to London

Round-trip

One-way

Last minute

Direct

Cheap return flights

16:20 - 22:05SFO-LHR

21h 45m1 stop

13:45 - 14:30LHR-SFO

32h 45m1 stop

$647TAP AIR PORTUGAL

Find Deal

Thu, 21 Aug - Wed, 27 Aug

16:20 - 10:20SFO-LHR

34h 00m1 stop

13:45 - 14:30LHR-SFO

32h 45m1 stop

$660TAP AIR PORTUGAL

Find Deal

Thu, 21 Aug - Wed, 27 Aug

21:20 - 15:40SFO-LHR

10h 20mdirect

06:30 - 11:45LHR-SFO

13h 15m1 stop

$751Virgin Atlantic

Find Deal

Sun, 17 Aug - Wed, 27 Aug

19:55 - 14:10SFO-LHR

10h 15mdirect

12:10 - 16:35LHR-SFO

36h 25m1 stop

$762United Airlines

Find Deal

Wed, 3 Sep - Wed, 17 Sep

13:00 - 07:25SFO-LHR

10h 25mdirect

07:25 - 14:30LHR-SFO

15h 05m1 stop

$766United Airlines

Find Deal

Wed, 27 Aug - Wed, 3 Sep

13:00 - 07:25SFO-LHR

10h 25mdirect

06:50 - 19:51LHR-SFO

21h 01m2 stops

$772

Find Deal

Sun, 24 Aug - Wed, 3 Sep

21:20 - 15:40SFO-LHR

10h 20mdirect

06:15 - 12:50LHR-SFO

14h 35m1 stop

$777Virgin Atlantic

Find Deal

Tue, 19 Aug - Tue, 26 Aug

21:20 - 15:40SFO-LHR

10h 20mdirect

09:00 - 18:15LHR-SFO

17h 15m1 stop

$779Delta

Find Deal

Wed, 13 Aug - Wed, 27 Aug

21:20 - 15:40SFO-LHR

10h 20mdirect

06:30 - 11:45LHR-SFO

13h 15m1 stop

$780Delta

Find Deal

Wed, 3 Sep - Wed, 15 Oct

23:47 - 10:00SFO-LHR

26h 13m1 stop

17:50 - 19:57LHR-SFO

34h 07m2 stops

$794

Find Deal

Mon, 4 Aug - Thu, 21 Aug

TAP AIR PORTUGAL flights from San Francisco to London

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

TAP AIR PORTUGAL

21 Aug

SFO16:20San Francisco

21h 45m

1 stop

LHR22:05London Heathrow

27 Aug

LHR13:45London Heathrow

32h 45m

1 stop

SFO14:30San Francisco

$647

Find similar

TAP AIR PORTUGAL

21 Aug

SFO16:20San Francisco

34h 00m

1 stop

LHR10:20London Heathrow

27 Aug

LHR13:45London Heathrow

32h 45m

1 stop

SFO14:30San Francisco

$660

Find similar

TAP AIR PORTUGAL

11 Sept

SFO16:20San Francisco

18h 30m

1 stop

LHR18:50London Heathrow

22 Sept

LHR19:50London Heathrow

25h 45m

1 stop

SFO13:35San Francisco

$689

Find similar

Virgin Atlantic flights from San Francisco to London

Our best Virgin Atlantic deals on San Francisco to London flight tickets

Virgin Atlantic

17 Aug

SFO21:20San Francisco

10h 20m

LHR15:40London Heathrow

27 Aug

LHR06:30London Heathrow

13h 15m

1 stop

SFO11:45San Francisco

$751

Find similar

Virgin Atlantic

19 Aug

SFO21:20San Francisco

10h 20m

LHR15:40London Heathrow

26 Aug

LHR06:15London Heathrow

14h 35m

1 stop

SFO12:50San Francisco

$777

Find similar

Virgin Atlantic

12 Aug

SFO12:10San Francisco

17h 00m

1 stop

LHR13:10London Heathrow

25 Aug

LHR20:55London Heathrow

22h 50m

1 stop

SFO11:45San Francisco

$788

Find similar

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

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?

What is the cheapest month to fly to London?

If you aren’t able to travel during the month of October, then book flights to London from San Francisco during September instead. Flights to London in September, while not as cheap as those in October, still average around $1,004.

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

Our data shows that Tuesday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as $993. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from San Francisco to London for around $1,768.

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

The cheapest time of day to fly to London is in the evening when flights can be purchased for as low as $1,014. In contrast, the most expensive time of day to depart to London is in the afternoon when prices are around $1,166.

What is the cheapest San Francisco to London flight route?

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

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

You are more likely to see cheaper flights to London from San Francisco when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around $1,180 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from San Francisco for as low as $1,105 on momondo.

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

There are 3 cabin classes available to choose from on San Francisco to London 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 flights?

You could potentially save up to 46% on your flight if you consider stops on a San Francisco to London flight.

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

As of July 2025, prices for San Francisco to London flights are approximately 34% more expensive when compared to flights at the same time last year.

When to book flights from San Francisco to London

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

Estimated return price

Cheap San Francisco to London (SFO to LON) flight deals and tips

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

Best price found	$504
Fastest flight time	10h 10m
Direct flights	Every day
Airports in London	1 airport

The best one-way flight to London from San Francisco in the past 72 hours is $504. The best return flight deal from San Francisco to London found on momondo in the last 72 hours is $647.

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

Direct flights go from San Francisco to London every day.

There is 1 airport near London: London Heathrow (LHR)

Search flight deals

How far is San Francisco to London by plane?
London is 8609.4 km away from San Francisco. By plane, this route typically takes 10h 15m.
When did momondo last update prices for flights from San Francisco Airport to London?
Prices for flights from San Francisco Airport to London are updated daily.
How old do you have to be to fly from San Francisco Airport to London?
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 stopovers 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.
What documentation or ID do you need to fly to London?
The necessary travel and health documents for your London 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 licence 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?
momondo data reveals that the most frequently booked plane model on the route from San Francisco to London is Boeing 777, representing 29.89% of all bookings. The subsequent popular models are Boeing 787-9 Dreamliner at 26.86%, Airbus A380-800 at 16.77%, and Boeing 787 Dreamliner at 10.29%.

Gatwick

Hounslow

Brentford

Wembley

Slough

Dover

Ipswich

Abingdon

Newbury

Harrow

Richmond

Eastbourne

Chichester

Deal

Kingston upon Thames

Brentwood

Milton Keynes

Guildford

Maidstone

Sutton

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from San Francisco to London. momondo saves you time and could save you money on your trip.

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

Yes. momondo allows you to filter the results for San Francisco to London flights to just show those with flexible booking policies.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight 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?

Yes momondo offers price alerts on flights to London from San Francisco. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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Find better results for your trip to the United Kingdom

Fly into one of these airports located in London

London City Airport

London Gatwick Airport

London Heathrow Airport

London Luton Airport

London Stansted Airport

Popular Cities in the United Kingdom

Look for other cheap flights to Manchesterfrom $1,450

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Look for other cheap flights to Invernessfrom $1,959

Look for other cheap flights to Leedsfrom $2,208

Look for other cheap flights to Cardifffrom $2,162

Cheap flights from San Francisco to London from $504

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 9/8. 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

TAP AIR PORTUGAL flights from San Francisco to London

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

Virgin Atlantic flights from San Francisco to London

Our best Virgin Atlantic deals on San Francisco to London flight tickets

See travel insights to London from

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

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?

What is the cheapest month to fly to London?

If you aren’t able to travel during the month of October, then book flights to London from San Francisco during September instead. Flights to London in September, while not as cheap as those in October, still average around $1,004.

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

Our data shows that Tuesday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as $993. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from San Francisco to London for around $1,768.

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

The cheapest time of day to fly to London is in the evening when flights can be purchased for as low as $1,014. In contrast, the most expensive time of day to depart to London is in the afternoon when prices are around $1,166.

What is the cheapest San Francisco to London flight route?

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

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

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

There are 3 cabin classes available to choose from on San Francisco to London 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 flights?

You could potentially save up to 46% on your flight if you consider stops on a San Francisco to London flight.

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

As of July 2025, prices for San Francisco to London flights are approximately 34% more expensive when compared to flights at the same time last year.

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

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

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

The number of flights available between San Francisco and London is 43 per day as of July 2025. The most frequent departure time is 16:00, with 57% of daily flights leaving in the afternoon.

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

301 flights are operational weekly from San Francisco to London as of July 2025. The most popular departure day for this route is Mon, with 14% of flights per week taking off on this day.

When to book flights from San Francisco to London

Cheap San Francisco to London (SFO to LON) flight deals and tips

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

Best price found

Fastest flight time

Direct flights

Airports in London

How far is San Francisco to London by plane?

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

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

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

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

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 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 the United Kingdom

Fly into one of these airports located in London

Airports listed have a maximum distance of 49.5 km from London