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$490+ 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 3/22. Fares are subject to change and may not be available on all flights or dates of travel.
LON — SFO
Jan 15 — Jan 221
Thu 1/15
Thu 1/22
1 adult, Economy
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Find cheap flights from London to San Francisco with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

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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

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 December 16, 2025.

This American Airlines deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2611:45 amLHR - SFO
Nonstop11h 15mAmerican Airlines
Wed 1/78:40 pmSFO - LHR
Nonstop10h 30mAmerican Airlines
Deal found 12/16$637
This Netflights deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Netflights is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/268:25 amLHR - SFO
1 stop15h 10mBritish Airways
Sat 1/108:40 pmSFO - LHR
Nonstop10h 30mBritish Airways
Deal found 12/16$640
This American Airlines deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/253:25 pmLHR - SFO
Nonstop11h 20mAmerican Airlines
Mon 12/294:11 pmSFO - LHR
1 stop15h 19mAmerican Airlines
Deal found 12/16$642
This Trip.com deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/254:00 pmLGW - SFO
1 stop32h 05mTAP AIR PORTUGAL
Sat 1/174:35 pmSFO - LGW
2 stops20h 05mTAP AIR PORTUGAL
Deal found 12/15$643
This American Airlines deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/258:20 amLHR - SFO
1 stop16h 44mAmerican Airlines
Tue 1/65:30 pmSFO - LHR
Nonstop10h 30mAmerican Airlines
Deal found 12/16$644
This Trip.com deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/256:30 pmLHR - SFO
1 stop29h 35mTAP AIR PORTUGAL
Mon 12/294:35 pmSFO - LHR
1 stop22h 05mTAP AIR PORTUGAL
Deal found 12/16$645
This oojo deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/254:30 pmLHR - SFO
1 stop31h 35mTAP AIR PORTUGAL
Sat 1/104:35 pmSFO - LHR
1 stop21h 00mTAP AIR PORTUGAL
Deal found 12/16$652
This American Airlines deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/243:25 pmLHR - SFO
Nonstop11h 20mAmerican Airlines
Mon 1/125:30 pmSFO - LHR
Nonstop10h 30mAmerican Airlines
Deal found 12/16$658
This Cheapflightsfares deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/243:25 pmLHR - SFO
Nonstop11h 20mBritish Airways
Mon 1/126:37 amSFO - LHR
2 stops24h 18mBritish Airways
Deal found 12/16$661
This Kiwi.com deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/236:30 pmLHR - SFO
1 stop28h 00mTAP AIR PORTUGAL
Wed 1/214:35 pmSFO - LHR
1 stop18h 20mTAP AIR PORTUGAL
Deal found 12/16$662
This Kiwi.com deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/257:55 pmLHR - SFO
1 stop28h 10mTAP AIR PORTUGAL
Fri 1/237:10 pmSFO - LHR
1 stop15h 45mTAP AIR PORTUGAL
Deal found 12/15$664
This TAP AIR PORTUGAL deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/254:00 pmLGW - SFO
1 stop32h 05mTAP AIR PORTUGAL
Fri 1/237:10 pmSFO - LGW
1 stop30h 40mTAP AIR PORTUGAL
Deal found 12/16$680

Find flight deals from London to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from London (LON) to San Francisco (SFO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 16, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$630
(Air Canada)

One-way from

$490
(Cheapflightsfares)

Popular in

July

Cheapest in

September

Average price

$826

Good round-trip deal

$746 or less

Good one-way deal

$515 or less
Provider with most accurate pricing for London (LON)-San Francisco flight deals.
Search Deals
Provider most trusted by Cheapflights users for London (LON)-San Francisco flights.
Search Deals
From London (LON) to San Francisco
Search Deals
One-way flight from London (LON) to San Francisco
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($101 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from London (LON) to San Francisco.
Search Deals
Price to beat on a one-way flight from London (LON) to San Francisco.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from London to San Francisco that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 16, 2025.
Use the filters below to find and compare flights from London to San Francisco that are best for you.

Fly from

London

Fly to

San Francisco

Route

Depart

Return

Price

LondonSan Francisco

LTN - SFO

LTNSFO

London Luton

Fri 1/30

5:50 am-3:35 pm

1 stop17h 45m

San Francisco

Fri 2/6

5:20 pm-8:10 pm

1 stop18h 50m

$644

LondonSan Francisco

STN - SFO

STNSFO

London Stansted

Mon 1/12

8:30 am-3:35 pm

1 stop15h 05m

San Francisco

Mon 1/26

5:20 pm-9:20 pm

1 stop20h 00m

$644

LondonSan Francisco

LTN - SFO

LTNSFO

London Luton

Wed 1/28

6:50 am-3:35 pm

1 stop16h 45m

San Francisco

Wed 2/4

5:20 pm-5:05 pm

1 stop15h 45m

$645

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 1/19

10:05 am-1:20 pm

Nonstop11h 15m

San Francisco

Mon 2/2

5:25 pm-12:00 pm

Nonstop10h 35m

$660

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 1/12

10:05 am-1:20 pm

Nonstop11h 15m

San Francisco

Mon 1/26

12:50 pm-7:25 am

Nonstop10h 35m

$663

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 1/29

9:00 am-4:30 pm

1 stop15h 30m

San Francisco

Thu 2/5

10:50 pm-8:35 pm

1 stop13h 45m

$663

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 1/19

2:25 pm-4:30 pm

2 stops58h 05m

San Francisco

Mon 2/2

7:25 pm-5:50 pm

1 stop14h 25m

$665

LondonSan Francisco

LTN - SFO

LTNSFO

London Luton

Sat 2/14

6:00 am-3:35 pm

1 stop17h 35m

San Francisco

Sat 2/21

5:20 pm-8:15 pm

1 stop18h 55m

$671

LondonSan Francisco

STN - SFO

STNSFO

London Stansted

Fri 1/30

6:30 am-3:35 pm

1 stop17h 05m

San Francisco

Fri 2/6

5:20 pm-6:20 pm

1 stop17h 00m

$671

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Tue 2/3

10:20 am-10:54 pm

2 stops20h 34m

San Francisco

Fri 2/6

4:40 pm-4:00 pm

1 stop15h 20m

$674

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/14

Showing 1-10 of 60 results
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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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars
Thrive TravelPrice Accuracy3 starsTrust Score*1 star
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • 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.

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.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

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 December 12, 2025.

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, February is the cheapest month in which you can book a flight from London to San Francisco (average of $474). Flying from London to San Francisco in July is currently the most expensive (average of $611). 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.

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 December 16, 2025.

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.

Weekly flight availability from London to San Francisco

Explore weekly flight availability from London to San Francisco. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated December 16, 2025.

The most flights from LON to SFO are scheduled on a Monday (31 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (25 on average).

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.

Lisbon (LIS) – chosen by Cheapflights users on 50% of 1-stop itineraries from London to San Francisco on Cheapflights.

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.

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

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.

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?

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.

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

How often are flights from London to San Francisco delayed?

About 13% of weekly flights between London and San Francisco have experienced delays in the past year, with the average delay time being 141 minutes.

What is the most punctual flight time for London to San Francisco flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Tuesday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on London to San Francisco flights?

Over the last year, Virgin Atlantic have had the lowest number of delays on this route, with just 11% of flights being delayed.

The best insider tips for London to San Francisco flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your London to San Francisco trip
Airlines
British Airways

BA's Club Suite offers private pods with a door, ideal for long-haul comfort.


BA's World Traveller Plus offers extra seat width and legroom, perfect for long-haul flights.

Read more about British AirwaysBy Gabriel Leigh
United Airlines

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.

Read more about United AirlinesBy Harriet Baskas
Lufthansa

Lufthansa's Allegris cabins offer advanced comfort features, enhancing long-haul travel experience.


Lufthansa's Sleeper's Row allows spreading out across seats for added comfort on long flights.

Read more about LufthansaBy Blane Bachelor
Virgin Atlantic

Virgin's Upper Class offers lie-flat beds and a four-course meal for a luxurious experience.


Virgin's Economy Delight provides extra legroom and priority boarding, enhancing comfort and convenience.

Read more about Virgin AtlanticBy Blane Bachelor
Airports
LHR

Heathrow's strict security can delay you. Ensure all liquids are in one small bag to avoid long waits for manual screening.

Read more about LHRBy Ramsey Qubein
SFO

Use BART for a cost-effective 40-minute trip from SFO to downtown San Francisco. Purchase a Clipper Card for easy fare payment.

Read more about SFOBy Harriet Baskas
Our travel experts
Gabriel Leigh

Gabriel Leigh

Expert on British Airways

Gabriel Leigh

Gabriel Leigh

Gabriel is a writer and video creator. As senior content producer for Flightradar24 and Monocle’s transport correspondent, he keeps a close eye on aviation in particular. He has also written travel articles for the likes of The New York Times. Born in New York but raised around the world, he now lives in Sweden. He’s been to 75 countries, flying 2.3 million miles on 113 airlines and through 234 airports in the process.

Read more
Harriet Baskas

Harriet Baskas

Expert on United Airlines and SFO

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Blane Bachelor

Blane Bachelor

Expert on Lufthansa and Virgin Atlantic

Blane Bachelor

Blane Bachelor

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on LHR

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

Reviews of airlines servicing San Francisco

Get insights into the airlines that provide service to San Francisco. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Francisco. Reviews last updated December 16, 2025.
See what other customers who have flown with Delta, United Airlines, and American 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.
Delta
7.9
Good
8,009 reviews

Food

7.3

Entertainment

7.9

Boarding

8.1

Crew

8.5

Overall

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
7.9
Good
8,009 reviews
Delta
7.9
Good
8,009 reviews

Food

7.3

Entertainment

7.9

Boarding

8.1

Crew

8.5

Overall

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
9,094 reviews
Delta
7.9
Good
8,009 reviews

Food

7.3

Entertainment

7.9

Boarding

8.1

Crew

8.5

Overall

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
American Airlines
7.2
Good
11,047 reviews
Delta
7.9
Good
8,009 reviews

Food

7.3

Entertainment

7.9

Boarding

8.1

Crew

8.5

Overall

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Lufthansa
6.8
Okay
7,632 reviews
Delta
7.9
Good
8,009 reviews

Food

7.3

Entertainment

7.9

Boarding

8.1

Crew

8.5

Overall

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
British Airways
6.7
Okay
7,580 reviews
Delta
7.9
Good
8,009 reviews

Food

7.3

Entertainment

7.9

Boarding

8.1

Crew

8.5

Overall

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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?

    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 27 daily inbound flights from London from 12 different airlines.

  • How long is the flight from London to San Francisco?

    There are many flights that can get you from London to San Francisco in 11h 15m. Fly via United Airlines, SWISS, or Air Transat 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?

    Aer Lingus, at $492, was found to be the cheapest airline from London to San Francisco.Alternate airlines to your destination round-trip include British Airways and Scandinavian Airlines. You may be able to fly from London to San Francisco for 27% 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 Scandinavian Airlines, with whom users have recently found tickets for as low as $358. However, be on the lookout for offers from TAP AIR PORTUGAL and WestJet, as they are both options that can get you from London to San Francisco for a low price.

  • 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 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 (88%), Air France (86%) or Delta (86%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from London to San Francisco?

    While on average a flight from London to San Francisco is generally $1,473, our data shows the cheapest flight currently is $457. When looking at the most popular route, (London Heathrow - San Francisco), you can expect to pay $482 for that flight.

  • 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.

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

    Currently, February is the cheapest month in which you can book a flight from London to San Francisco (average of $474). Flying from London to San Francisco in July is currently the most expensive (average of $611). 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.

See more FAQs

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Roseville
South San Francisco
Santa Cruz
Livermore
Turlock
Manteca
Watsonville
Redwood City
Sunnyvale
Santa Clara
San Bruno
Daly City
San Carlos
Vallejo
Hollister
San Ramon
Foster City
Union City
Davis
Emeryville

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for London to San Francisco

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Top 10 airlines flying from London to San Francisco

Discover the top 10 airlines that operate flights from London to San Francisco. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$492Average$760FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$516Average$664FlexibilityNo cancel feeOn-time70%
Scandinavian AirlinesCheapest$520Average$823FlexibilityNo cancel feeOn-time77%
Brussels AirlinesCheapest$530Average$703FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$534Average$680FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$542Average$666FlexibilityNo cancel feeOn-time76%
Virgin AtlanticCheapest$550Average$736FlexibilityNo cancel feeOn-time72%
DeltaCheapest$555Average$708FlexibilityNo cancel feeOn-timeN/A
Austrian AirlinesCheapest$567Average$720FlexibilityNo cancel feeOn-time78%
American AirlinesCheapest$589Average$752FlexibilityNo cancel feeOn-time71%

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