What’s the cheapest layover airport for flights from London to San Francisco?

Copenhagen (CPH) is the most affordable 1-stop option, with an average round-trip price of $520.

How much does it cost to fly round-trip from London to San Francisco?

Airfare is below average for this route at the moment. London to San Francisco flights typically cost between $525 and $691 in November. The cheapest round-trip price found within the last 3 days was $511 on TAP AIR PORTUGAL (Nov 20-Dec 3).

What’s the top layover airport for flights from London to San Francisco?

Copenhagen (CPH) – chosen by Cheapflights users on 67% of 1-stop itineraries from London to San Francisco on Cheapflights.

What’s the fastest layover option from London to San Francisco?

Flights via Dublin (DUB) have the shortest average one-way travel time for 1-stop routes: 13h 55m.

Which airport typically offers the quickest layover for flights from London to San Francisco?

Flights via Dublin (DUB) offer the fastest connection on this route, with an average layover time of 1h 40m.

How long is the flight from London to San Francisco?

There are many flights that can get you from London to San Francisco in 26h 45m. Fly via Scandinavian Airlines, TAP AIR PORTUGAL, or SWISS to get the fastest option. There are 5350 mi between London and San Francisco. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

What are the cheapest airlines flying from London to San Francisco round-trip?

Finnair, at $382, was found to be the cheapest airline from London to San Francisco.Alternate airlines to your destination round-trip include Aer Lingus and British Airways. You may be able to fly from London to San Francisco for 43% less than the average price by searching for these airlines.

What are the cheapest airlines to fly from London to San Francisco one-way?

The cheapest airline one-way is SWISS, with whom users have recently found tickets for as low as $476. However, be on the lookout for offers from Lufthansa and United Airlines, as they are both options that can get you from London to San Francisco for a low price.

How far ahead should I book a flight from London to San Francisco?

The price you pay for your flight from London to San Francisco may vary depending on when you book. For the best chance of a lower fare, look to book 51 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from London to San Francisco?

Currently, December is the cheapest month in which you can book a flight from London to San Francisco (average of $453). Flying from London to San Francisco in July is currently the most expensive (average of $613). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 4.4 inches per month. January is typically the wettest month, when rainfall can reach 4.4 in. July is typically the driest time to visit San Francisco when rainfall is around 0.0 in.

If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

What are the most popular routes from London to San Francisco?

When deciding which route to take from London to San Francisco consider London Heathrow - San Francisco, London Gatwick - San Francisco or London City - San Francisco as they are the most popular.

What are the cheapest flights from London to San Francisco?

While on average a flight from London to San Francisco is generally $2,097, our data shows the cheapest flight currently is $508. When looking at the most popular route, (London Heathrow - San Francisco), you can expect to pay $476 for that flight.

What are the most reliable airlines from London to San Francisco?

No one likes to see their flight delayed. When booking a flight from London to San Francisco consider choosing Air New Zealand (87%), KLM (85%) or Air France (85%) as they are the most reliable in getting you off to your destination on time.

What are the most popular airlines that fly from London to San Francisco?

Consider British Airways, United Airlines or Lufthansa when booking your flight. These represent the most popular airlines when flying from London to San Francisco.

What is the cheapest time of day to fly from LON to SFO?

It’s optimal to fly from London to San Francisco at noon. By choosing this option you can save up to 25% on the cost of your flight, compared to a flight in the morning.

Most accurate provider : When it comes to deals on London-San Francisco flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on London-San Francisco flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from London-San Francisco flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on London-San Francisco flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for London-San Francisco flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

What airport do you fly into for flights to San Francisco from London?

Located just 11.8 mi from the city center, San Francisco is the airport most travelers will use when flying to San Francisco from London. Booking flights from London to San Francisco (SFO) should be relatively easy as there are 16 daily inbound flights from London from 12 different airlines.

Can I find deals for flights from London to San Francisco that include hotel bookings?

Yes. In addition to deals on London to San Francisco flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from London to San Francisco?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to San Francisco.

Can I find deals for business class flights from London to San Francisco?

Yes. Cheapflights offers flight deals from London to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$474+ Flights from London to San Francisco

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$511 (Kiwi.com)
One-way from	$474 (Cheapflightsfares)
Popular in	July
Cheapest in	September
Average price	$654
Good round-trip deal	$651 or less
Good one-way deal	$611 or less

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	Trust Score*3 stars
AranGrant	Price Accuracy2 stars	Trust Score*3 stars
Thrive Travel	Price Accuracy3 stars	Trust Score*1 star
Cheapflightsfares	Price Accuracy3 stars	Trust Score*2 stars

United's Polaris Business Class features lie-flat seats and Saks Fifth Avenue bedding for ultimate comfort.

United's Premium Plus offers upgraded comfort with bigger seats and extra legroom on international flights.

Airline	Cheapest	Average	Flexibility	On-time
Finnair	Cheapest$382	Average$581	FlexibilityNo cancel fee	On-time76%
Aer Lingus	Cheapest$492	Average$799	FlexibilityNo cancel fee	On-timeN/A
British Airways	Cheapest$513	Average$668	FlexibilityNo cancel fee	On-time70%
Scandinavian Airlines	Cheapest$520	Average$808	FlexibilityNo cancel fee	On-time77%
Brussels Airlines	Cheapest$530	Average$676	FlexibilityNo cancel fee	On-timeN/A
Virgin Atlantic	Cheapest$538	Average$725	FlexibilityNo cancel fee	On-time72%
Austrian Airlines	Cheapest$539	Average$727	FlexibilityNo cancel fee	On-time78%
United Airlines	Cheapest$540	Average$682	FlexibilityNo cancel fee	On-time69%
Lufthansa	Cheapest$545	Average$669	FlexibilityNo cancel fee	On-time76%
Delta	Cheapest$555	Average$708	FlexibilityNo cancel fee	On-timeN/A

$474+ Cheap flights from London (LON) to San Francisco (SFO)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/21. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from London to San Francisco with Cheapflights

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Cheapflights Tip: The best prices from London to San Francisco are usually found in September or February, booked 51 days in advance, depart on a Thursday or Wednesday and return on a Wednesday

Cheap flight deals from London to San Francisco

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from London to San Francisco

Cheapest flights from London to San FranciscoExplore the most affordable flight options available from London to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2025.

Explore the most affordable flight options available from London to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from London to San Francisco that are best for you.

Compare providers for flights from London to San Francisco

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from London to San Francisco in October.

Best time to book a flight from London to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from London with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from London to San Francisco

How far ahead should I book a flight from London to San Francisco?

Use this chart to determine the optimal time to book a round-trip flight from London to San Francisco. Price data was last updated on October 24, 2025.

What is the cheapest month to book a flight from London to San Francisco?

What is the cheapest time of day to fly from LON to SFO?

Find hourly flight availability from London to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 30, 2025.

How much does it cost to fly round-trip from London to San Francisco?

What’s the top layover airport for flights from London to San Francisco?

Share of 1-stop round-trip flights from London to San Francisco chosen by Cheapflights users in the past 12 months, using the same layover each way.

What’s the cheapest layover airport for flights from London to San Francisco?

Average round-trip fare for 1-stop flights from London to San Francisco, chosen by Cheapflights users in the past 12 months, with the same layover each way.

What’s the fastest layover option from London to San Francisco?

Shortest average travel time for 1-stop one-way flights from London to San Francisco, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Which airport typically offers the quickest layover for flights from London to San Francisco?

Average layover duration for 1-stop one-way flights from London to San Francisco, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

The best insider tips for London to San Francisco flights

Cheapflights partnered with top experts to bring you the best recommendations for your London to San Francisco trip

Airlines

British Airways

United Airlines

Lufthansa

Virgin Atlantic

Airports

LHR

SFO

Our travel experts

Reviews of airlines servicing San Francisco

See what other customers who have flown with Delta, Austrian Airlines, and United Airlines from London to San Francisco have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from London to San Francisco. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly into for flights to San Francisco from London?

How long is the flight from London to San Francisco?

What are the cheapest airlines flying from London to San Francisco round-trip?

What are the cheapest airlines to fly from London to San Francisco one-way?

What are the most popular routes from London to San Francisco?

What are the most reliable airlines from London to San Francisco?

What are the cheapest flights from London to San Francisco?

Can I find deals for flights from London to San Francisco that include hotel bookings?

How can I find direct flights from London to San Francisco?

Can I find deals for business class flights from London to San Francisco?

What is the cheapest month to book a flight from London to San Francisco?

Traveling to a place near San Francisco?

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Alternative routes for London to San Francisco

See prices for flight routes from nearby airports that may be better suited for you.

Cheapest flights from London to San Francisco
Explore the most affordable flight options available from London to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2025.