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LHR - SFO

Find cheap flights from London to San Francisco from C$ 589

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from London to San Francisco departing on 9/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
mar 28/5
mar 4/6

Search hundreds of travel sites at once for deals on flights to San Francisco

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to San Francisco, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to San Francisco, as well as popular online travel agencies
In the last 7 days, travellers have searched 43,219,010 times on KAYAK, and here is why:

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Cheap flight deals from London to San Francisco (LHR-SFO)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from London to San Francisco that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
6:30 a.m. - 11:45 a.m.LHR-SFO
13h 15m1 stop
5:01 p.m. - 11:20 a.m.SFO-LHR
10h 19mdirect
C$ 705Delta
Find Deal
gio, 12 set - dom, 22 set
11:45 a.m. - 2:45 p.m.LHR-SFO
11h 00mdirect
5:01 p.m. - 11:20 a.m.SFO-LHR
10h 19mdirect
C$ 711Delta
Find Deal
gio, 12 set - dom, 22 set
1:30 p.m. - 7:55 p.m.LHR-SFO
14h 25m1 stop
12:35 p.m. - 6:55 a.m.SFO-LHR
10h 20mdirect
C$ 720Lufthansa
Find Deal
mer, 18 set - lun, 23 set
11:45 a.m. - 2:45 p.m.LHR-SFO
11h 00mdirect
5:01 p.m. - 11:20 a.m.SFO-LHR
10h 19mdirect
C$ 723Virgin Atlantic
Find Deal
ven, 27 set - gio, 3 ott
6:50 a.m. - 7:00 p.m.LHR-SFO
20h 10m2 stops
9:10 a.m. - 11:25 a.m.SFO-LHR
18h 15m1 stop
C$ 724United Airlines
Find Deal
ven, 10 mag - ven, 17 mag
8:30 a.m. - 7:55 p.m.LHR-SFO
19h 25m1 stop
12:32 a.m. - 7:40 a.m.SFO-LHR
23h 08m1 stop
C$ 726United Airlines
Find Deal
ven, 20 set - dom, 29 set
2:45 p.m. - 9:25 p.m.LHR-SFO
14h 40m1 stop
3:35 p.m. - 10:05 a.m.SFO-LHR
10h 30mdirect
C$ 730British Airways
Find Deal
dom, 8 set - sab, 21 set
11:45 a.m. - 2:45 p.m.LHR-SFO
11h 00mdirect
10:10 p.m. - 4:30 p.m.SFO-LHR
10h 20mdirect
C$ 735Virgin Atlantic
Find Deal
sab, 11 mag - sab, 18 mag
10:10 a.m. - 1:15 p.m.LHR-SFO
11h 05mdirect
3:30 p.m. - 10:00 a.m.SFO-LHR
10h 30mdirect
C$ 742British Airways
Find Deal
mer, 11 set - ven, 27 set
5:30 p.m. - 8:54 p.m.LHR-SFO
35h 24m2 stops
2:35 p.m. - 5:55 a.m.SFO-LHR
31h 20m1 stop
C$ 772Lufthansa
Find Deal
sab, 7 set - sab, 21 set

Flights from London to San Francisco - Travel Insights & Trends

Get data-powered insights and trends into flights from London to San Francisco to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from London to San Francisco?

The average price of all flights from London Heathrow Airport to San Francisco clicked on KAYAK for each day over the last 12 months.
If you are looking for a flight deal from London to San Francisco, look for departures on Mondays and avoid leaving on a Saturday, as it's usually the priciest day. When flying back from San Francisco, Monday is the cheapest day to fly and Saturday is the most expensive.

What is the cheapest month to fly from London Heathrow Airport to San Francisco?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from London Heathrow Airport to San Francisco, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from London Heathrow Airport to San Francisco is February, where tickets cost C$ 671 on average. On the other hand, the most expensive months are July and August, where the average cost of tickets is C$ 1,137 and C$ 1,058 respectively.

How far in advance should I book a flight from London Heathrow Airport to San Francisco?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from London Heathrow Airport to San Francisco, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from London Heathrow Airport to San Francisco, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 42 days before departure.

Which airlines provide the cheapest flights from London to San Francisco?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the best return deals on flights connecting London to San Francisco were found on Delta (C$ 705) and Lufthansa (C$ 720). WestJet proposed the cheapest one-way flight at C$ 726.

Which airlines fly most frequently between London and San Francisco?

British Airways connects London to San Francisco with up to 4 flights per day. United Airlines also offers 3 flights per day, while Virgin Atlantic follows with 3 flights per day.

How many flights are there between London Heathrow Airport and San Francisco per day?

Each day, there are between 10 and 11 nonstop flights that take off from London Heathrow Airport and land in San Francisco, with an average flight time of 11h 01m. The most common departure time is 10:00 a.m. and most flights take off in the morning. Each week, there are 71 flights. The most frequent day of departure is Friday, when 15% of all weekly flights depart. The fewest flights depart on a Saturday.

Which cabin class options are there for flights between London Heathrow Airport and San Francisco?

The average price of flights for each cabin class for the route found by users searching on KAYAK over the last 2 weeks.
There is only one cabin class option available for the route, which is Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

How long does a flight from London to San Francisco take?

Direct flights take on average 10h 55m to travel the 13,857 km between London and San Francisco.

What’s the earliest departure time from London to San Francisco?

Early birds can take the earliest flight from London Heathrow Airport at 10:10 am and will be landing in San Francisco at 1:15 pm.

What’s the latest departure time from London to San Francisco?

If you prefer to fly at night, the latest flight from London Heathrow Airport to San Francisco jets off at 5:20 pm and lands at 8:20 pm.

Good to know

Low season

January

High season

July

Cheapest flight

C$ 589
Best time to beat the crowds (15% less expensive on average)
Most popular time to fly (34% more expensive on average)
Flight from London to San Francisco

When to book flights from London to San Francisco

Are your dates flexible? Find out the best times to travel from London to San Francisco based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking London to San Francisco flights

  • Is Heathrow family friendly?

    Heathrow Airport has at least one children’s play area in every terminal and most restaurants do children’s menus, and some promise to serve food within 15min. You can pre-order nappies and baby milk via the on-site chemist in each terminal, which reduces the need to carry more things through security.

  • How many airports are there in San Francisco and how many have direct routes from London?

    There are three airports in the San Francisco Bay area: San Francisco International Airport (SFO), Oakland International Airport (OAK) and San Jose International Airport (SJC). SFO is the airport that has more international airline options while Oakland and San Jose have more low-cost carriers and domestic routes. Both British Airways and Virgin fly non-stop to San Francisco SFO Airport from London Heathrow.

  • What is the best way to travel to London Heathrow to catch my plane to San Francisco SFO?

    There are two trains from central London, leaving Paddington station; the Heathrow Express takes 15min, non-stop and the Heathrow Connect takes 30min with a few stops. It is also very straightforward to catch the London Underground - the journey takes about an hour from central London.

  • Once landed from London Heathrow, what is the best way to travel into San Francisco using public transport?

    The Bay Area Rapid Transit (BART) is easy, taking 30min, with trains leaving 3-4 times every hour. Passengers can connect to the BART from any of the terminals via the free Air Train. BART trains run from 5:00 in the week, 6:00 on Saturdays, and 8:00 on Sundays and stop at midnight every day. There are also buses that run from San Francisco SFO Airport to various parts of the state. For example, the Evans Airport shuttle serves Napa, the Marin Airporter goes into Marin County and the Sonoma County Airport Express carries passengers to Sonoma County.

  • What is the cheapest flight from London Heathrow Airport to San Francisco?

    In the last 3 days, the lowest price for a flight from London Heathrow Airport to San Francisco was C$ 431 for a one-way ticket and C$ 516 for a round-trip.

  • Which airlines offer Wi-Fi service onboard planes from London to San Francisco?

    Only KLM offers inflight Wi-Fi service on the London to San Francisco flight route.

  • Which aircraft models fly most regularly from London to San Francisco?

    The Boeing 777 is the aircraft model that flies most regularly on the London to San Francisco flight route.

  • Which airline alliances offer flights from London to San Francisco?

    oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between London and San Francisco, with Star Alliance being the most commonly used for this route.

  • On which days can I fly direct from London to San Francisco?

    There are direct flights from London to San Francisco on a daily basis.

  • How does KAYAK find such low prices on flights from London to San Francisco?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from London to San Francisco.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London to San Francisco?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Francisco from London is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from London to San Francisco?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Francisco with an airline and back to London with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London to San Francisco?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Francisco from London up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding a cheap flight from London to San Francisco

  • London Heathrow (LHR) is one of the busiest airports in the world, so make sure to check your terminal in advance as distances between the terminals can be long if you make a mistake, and the journey between them can take more time than you think.
  • Download the London Heathrow app onto your telephone before you leave, as this will update you in real-time on delays, and also help you easily navigate the terminals to find restaurants, services and your boarding gate.
  • If you are pushed for time but very hungry, look out for the 15-minute symbol at many of the eateries at Heathrow Airport; these places will take your order and deliver your food within 15min.
  • If you find yourself with lots of time to spare before your flight, head to the Number 1 Lounge in Terminal 3 after security – as well as food, newspapers and drink, it also has a travel spa and sleep pods that can be reserved by the hour.
  • When planning your flight into San Francisco SFO Airport, remember that because it’s so close to the coast, it is prone to being foggy, which means that landing and take-off capacity becomes frequently limited. Make sure you factor in some extra landing time in your arrival schedule for unforeseen weather delays; it’s all part of the wonder of arriving in the area.
See more tips

Prefer to fly non-stop from London to San Francisco?

Find which airlines fly direct from Heathrow to San Francisco, which days they fly and book direct flights.

Nonstop departures

London Heathrow to San Francisco

Monday

Aer Lingus,Aeromexico,Air Canada, +15 more

Aer Lingus,Aeromexico, +16 more

Tuesday

Aer Lingus,Aeromexico,Air Canada, +15 more

Aer Lingus,Aeromexico, +16 more

Wednesday

Aer Lingus,Aeromexico,Air Canada, +15 more

Aer Lingus,Aeromexico, +16 more

Thursday

Aer Lingus,Aeromexico,Air Canada, +15 more

Aer Lingus,Aeromexico, +16 more

Friday

Aer Lingus,Aeromexico,Air Canada, +15 more

Aer Lingus,Aeromexico, +16 more

Saturday

Aer Lingus,Aeromexico,Air Canada, +15 more

Aer Lingus,Aeromexico, +16 more

Sunday

Aer Lingus,Aeromexico,Air Canada, +15 more

Aer Lingus,Aeromexico, +16 more

See more nonstop flights

Nonstop returns

San Francisco to London Heathrow

Monday

Aer Lingus,Aeromexico,Air Canada, +15 more

Aer Lingus,Aeromexico, +16 more

Tuesday

Aer Lingus,Aeromexico,Air Canada, +15 more

Aer Lingus,Aeromexico, +16 more

Wednesday

Aer Lingus,Aeromexico,Air Canada, +15 more

Aer Lingus,Aeromexico, +16 more

Thursday

Aer Lingus,Aeromexico,Air Canada, +15 more

Aer Lingus,Aeromexico, +16 more

Friday

Aer Lingus,Aeromexico,Air Canada, +15 more

Aer Lingus,Aeromexico, +16 more

Saturday

Aer Lingus,Aeromexico,Air Canada, +15 more

Aer Lingus,Aeromexico, +16 more

Sunday

Aer Lingus,Aeromexico,Air Canada, +15 more

Aer Lingus,Aeromexico, +16 more

See more nonstop flights
See more nonstop flights

Book cheap flights from London to San Francisco

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from London to San Francisco found on KAYAK in the last 72 hours.
9/9lun
1 stop
29h 20mLHR-SFO
C$ 589
13/5lun
1 stop
28h 50mLHR-SFO
C$ 611
4/5sab
1 stopWestJet
15h 03mLHR-SFO
C$ 726
6/9ven
1 stopTAP AIR PORTUGAL
26h 30mLHR-SFO
C$ 787
24/5ven
1 stopJetBlue
21h 15mLHR-SFO
C$ 1,125
26/6mer
1 stopJetBlue
20h 04mLHR-SFO
C$ 1,164
26/7ven
1 stopBritish Airways
19h 30mLHR-SFO
C$ 1,175
2/7mar
1 stopWestJet
29h 50mLHR-SFO
C$ 1,219
1/7lun
1 stopTAP AIR PORTUGAL
27h 20mLHR-SFO
C$ 1,357
4/5sab
directBritish Airways
11h 05mLHR-SFO
C$ 3,931

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Last minute flights from London to San Francisco

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from London to San Francisco that are departing in the next 10 days.
2/5gio
directFinnair
11h 05mLHR-SFO
20/5lun
multi-stopFinnair
14h 08mSFO-LHR
C$ 1,186
2/5gio
directFinnair
11h 05mLHR-SFO
22/5mer
directFinnair
10h 30mSFO-LHR
C$ 1,256
2/5gio
multi-stop
16h 30mLHR-SFO
21/5mar
multi-stop
21h 36mSFO-LHR
C$ 1,591
2/5gio
multi-stopScandinavian Airlines
16h 45mLHR-SFO
16/5gio
multi-stopScandinavian Airlines
31h 55mSFO-LHR
C$ 1,628
1/5mer
multi-stopDelta
19h 09mLHR-SFO
20/5lun
multi-stopDelta
17h 55mSFO-LHR
C$ 1,633
1/5mer
directDelta
11h 00mLHR-SFO
20/5lun
multi-stopDelta
17h 55mSFO-LHR
C$ 1,672
2/5gio
multi-stopIcelandair
16h 30mLHR-SFO
22/5mer
multi-stopIcelandair
21h 36mSFO-LHR
C$ 1,760
2/5gio
multi-stopIcelandair
16h 30mLHR-SFO
20/5lun
multi-stopIcelandair
21h 36mSFO-LHR
C$ 1,827
3/5ven
multi-stop
24h 04mLHR-SFO
13/5lun
multi-stop
21h 55mSFO-LHR
C$ 2,207
1/5mer
multi-stopScandinavian Airlines
17h 10mLHR-SFO
18/5sab
multi-stopScandinavian Airlines
14h 20mSFO-LHR
C$ 2,567

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London - San Francisco Flights

Departure:

London (LHR)United Kingdom

Destination:

San Francisco (SFO)United States

Return flight deals:

San Francisco - London

Cabin classes:

C$ 902

Browse origins:

  • Flights » 
  • London Heathrow Airport

Browse destinations:

  • Flights » 
  • Worldwide » 
  • San Francisco