Question 1

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

Accepted Answer

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

Question 2

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

Accepted Answer

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 $770 when searching weeks out. 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 $712 on momondo.

Question 3

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

Accepted Answer

There are 4 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.

Question 4

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

Accepted Answer

The cheapest day to depart from San Francisco to London is on a Wednesday. Travelers who choose to depart for London on a Wednesday will often find tickets for as low as $807. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $944. These prices are subject to change though, so be sure to set up a Price Alert for flights to London.

Question 5

What is the cheapest San Francisco to London flight route?

Accepted Answer

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

Question 6

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

Accepted Answer

43 flights are operational daily from San Francisco to London as of July 2025. The most popular departure time for this route is 4:00PM, with 60% of flights per day taking off in the afternoon.

Question 7

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

Accepted Answer

You could potentially save up to 17% on your flight if you consider stops on a San Francisco to London flight.

Question 8

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

Accepted Answer

Flying to London from San Francisco in the evening is the least expensive time of day to depart. momondo users have found prices as low as $853 when looking at flights departing in the evening. Flights to London are more costly at noon, with an average ticket price of $988. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

Question 9

What is the cheapest month to fly to London?

Accepted Answer

The cheapest month to fly to London from San Francisco is in October. Flight prices, which tend to average around $641, are often lower during this time because this is during the off-season. The month of September is another great option to travel to London, with average flight prices from San Francisco averaging around $660.

Question 10

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

Accepted Answer

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

Question 11

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

Accepted Answer

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

Question 12

What airlines fly to London?

Accepted Answer

United Airlines, British Airways and Iberia are the top three most popular airlines that fly to London 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. Keep in mind that there are 18 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

Question 13

Which airlines fly direct from San Francisco to London?

Accepted Answer

The fastest flight from San Francisco to London takes 9h 15min and various airlines offer direct flights for this route. These include Norse Atlantic UK, Virgin Atlantic, American Airlines, Iberia, British Airways, Finnair, Lufthansa, and Envoy Air. You can depart from several airports in San Francisco including San Francisco Airport (SFO), San Jose Airport (SJC), and Oakland Airport (OAK) depending on the flight you choose. The arrival airport also varies with the different airline flights landing at London Heathrow Airport (LHR), London Gatwick Airport (LGW), and London City Airport (LCY) depending on the departure airport and airline chosen.

What is the best way to get in and out of airports in San Francisco and London?

BART provides an affordable and convenient way to commute to and from San Francisco Airport (SFO) and Oakland Airport (OAK) and various destinations in the Bay Area, including downtown San Francisco and Oakland. You can take the BART directly from the airport. You can take the BART shuttle bus from the OAK airport to the Coliseum station, and then take the BART to the train and then to your destination. VTA Route 60 (Airport Flyer): This bus service connects San Jose International Airport (SJC) to the Milpitas BART Station and Winchester VTA Station. It is a cheap and convenient option for getting to and from SJC airport. London City Airport (LCY) is located in East London and offers DLR (Docklands Light Railway) and underground, to and from the city. Gatwick Airport (LGW) is located south of London and offers train (Gatwick Express or Southern Rail) and coach to and from the city. Heathrow Airport (LHR) is well-connected to the city by train (Heathrow Express or TfL Rail), underground (Piccadilly Line), and bus.

What are the benefits of the different airports in San Francisco and London?

San Francisco International Airport (SFO) is the largest airport in Northern California and offers a wide range of domestic and international flights. SFO is known for its modern facilities and efficient terminal operations, making it a popular choice for travelers. Oakland Airport (OAK) is located in the East Bay and offers a variety of domestic and international flights. It offers convenient and affordable parking options to travelers. San Jose International Airport (SJC) is located in the heart of Silicon Valley and offers security checks as the traffic is minimal. London Heathrow Airport (LHR) is one of the busiest airports in the world and offers a wide range of domestic and international flights. It is well-connected with several public transportation options making it easily accessible. London City Airport (LCY) is located in the heart of London and is known for its convenience and fast check-in and security procedures. London Gatwick Airport (LGW) offers convenient parking options and a range of shopping and dining options.

Which cities can you get to from London Heathrow Airport (LHR)?

London Heathrow Airport (LHR) is the largest airport in the United Kingdom and offers a variety of transportation options for travelers to reach different cities and destinations. The city of London is easily accessible from LHR via the Heathrow Express train or the London Underground, which takes about 15-30 minutes. Southampton is located about 75 miles southwest of London and can be reached from LHR via a combination of train and bus or car. There is no direct train service between LHR and Southampton, but you can take a train to London Waterloo Station and then transfer to a train to Southampton. Cambridge is located about 75 miles north of London and can be reached from LHR via a combination of train and bus or car. You can take a train from LHR to London Kings Cross station and then transfer to a train to Cambridge. These cities are also accessible by taxi or you can rent a car at the airport.

Question 14

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

Accepted Answer

Prices for flights from San Francisco Airport to London refresh daily.

Question 15

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

Accepted Answer

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

Question 16

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

Accepted Answer

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from San Francisco Airport to London.

Question 17

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

Accepted Answer

The travel and health documents required for your trip to London 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. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best Price Found	$241
Fastest flight time	10h 20m
Direct flights	Every day
Airports in London	4 airports

Airline	Rating	Free Cancellation	Price
Scandinavian Airlines	PriceFrom $335	Free Cancellation	Rating 7.3 1,423 reviews	Search Scandinavian Airlines flights
TAP AIR PORTUGAL	PriceFrom $471	Free Cancellation	Rating 7.1 1,918 reviews	Search TAP AIR PORTUGAL flights
British Airways	PriceFrom $514	Free Cancellation	Rating 6.6 7,134 reviews	Search British Airways flights
SWISS	PriceFrom $555	Free Cancellation	Rating 7.5 1,657 reviews	Search SWISS flights
Iberia	PriceFrom $572	Free Cancellation	Rating 7.0 2,834 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
JetBlue	PriceFrom $584	Free Cancellation	Rating 7.3 2,908 reviews	Search JetBlue flights
Lufthansa	PriceFrom $585	Free Cancellation	Rating 6.8 7,205 reviews	Search Lufthansa flights
KLM	PriceFrom $586	Free Cancellation	Rating 7.8 1,372 reviews	Search KLM flights

Cheap flights from San Francisco to London from $241

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 8/12. 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

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?

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

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

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 4 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 17% 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 18% 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, Iberia, and WestJet are the most popular carriers operating from San Francisco to London

What airlines fly to London?

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

43 flights are operational daily from San Francisco to London as of July 2025. The most popular departure time for this route is 4:00PM, with 60% of flights per day taking off in the afternoon.

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

As of July 2025, 301 flights take off from San Francisco and land in London 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

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

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How far is San Francisco to London by plane?

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

How many operators does momondo search 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?

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

Best airlines flying from San Francisco to London

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

Delta Flights From San Francisco to London

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Airports listed have a maximum distance of 35.6 mi from London