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Cheap flights from London to San Francisco from C$ 682

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London to San Francisco departing on 18/4. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
9:00 a.m. - 4:30 p.m.
LHR
-
SFO
15h 30m1 stop
United Airlines Logo
2:30 p.m. - 11:50 a.m.
SFO
-
LHR
13h 20m1 stop
C$ 867United Airlines
Tue, 3 Mar - Mon, 30 Mar
JetBlue Logo
8:05 a.m. - 5:09 p.m.
LHR
-
SFO
17h 04m1 stop
JetBlue Logo
8:45 a.m. - 9:30 a.m.
SFO
-
LHR
16h 45m1 stop
C$ 869JetBlue
Sat, 10 Jan - Sat, 24 Jan
Scandinavian Airlines Logo
7:50 p.m. - 2:35 p.m.
LHR
-
SFO
50h 45m2 stops
Scandinavian Airlines Logo
4:40 p.m. - 4:00 p.m.
SFO
-
LHR
15h 20m1 stop
C$ 873Scandinavian Airlines
Tue, 13 Jan - Thu, 26 Feb
United Airlines Logo
8:30 a.m. - 8:10 p.m.
LHR
-
SFO
19h 40m2 stops
United Airlines Logo
5:25 p.m. - 12:00 p.m.
SFO
-
LHR
10h 35mdirect
C$ 874United Airlines
Mon, 12 Jan - Thu, 26 Feb
United Airlines Logo
11:30 a.m. - 8:10 p.m.
LHR
-
SFO
16h 40m1 stop
United Airlines Logo
8:30 a.m. - 6:30 a.m.
SFO
-
LHR
15h 00m1 stop
C$ 876United Airlines
Mon, 2 Mar - Wed, 25 Mar
United Airlines Logo
8:45 a.m. - 4:10 p.m.
LHR
-
SFO
15h 25m1 stop
United Airlines Logo
4:35 p.m. - 11:10 a.m.
SFO
-
LHR
10h 35mdirect
C$ 880United Airlines
Wed, 29 Apr - Tue, 19 May
United Airlines Logo
4:40 p.m. - 2:50 p.m.
LHR
-
SFO
30h 10m1 stop
United Airlines Logo
12:50 p.m. - 7:25 a.m.
SFO
-
LHR
10h 35mdirect
C$ 881United Airlines
Mon, 12 Jan - Mon, 26 Jan
United Airlines Logo
4:40 p.m. - 2:50 p.m.
LHR
-
SFO
30h 10m1 stop
United Airlines Logo
12:50 p.m. - 7:25 a.m.
SFO
-
LHR
10h 35mdirect
C$ 883United Airlines
Mon, 12 Jan - Mon, 26 Jan
United Airlines Logo
7:25 a.m. - 7:00 p.m.
LHR
-
SFO
19h 35m1 stop
United Airlines Logo
7:40 p.m. - 2:10 p.m.
SFO
-
LHR
10h 30mdirect
C$ 887United Airlines
Tue, 28 Apr - Tue, 19 May
Multiple Airlines Logo
6:30 a.m. - 12:40 p.m.
LHR
-
SFO
14h 10m1 stop
Multiple Airlines Logo
7:40 p.m. - 2:10 p.m.
SFO
-
LHR
10h 30mdirect
C$ 890Multiple Airlines
Mon, 4 May - Tue, 19 May

Scandinavian Airlines flights from London to San Francisco

Our best Scandinavian Airlines deals on London to San Francisco flight tickets
Scandinavian Airlines
13 Jan
LHR7:50 p.m.London Heathrow
50h 45m
2 stops
SFO2:35 p.m.San Francisco
26 Feb
SFO4:40 p.m.San Francisco
15h 20m
1 stop
LHR4:00 p.m.London Heathrow
C$ 873
Find similar
Scandinavian Airlines
6 Mar
LHR9:05 p.m.London Heathrow
25h 30m
2 stops
SFO2:35 p.m.San Francisco
21 Mar
SFO5:40 p.m.San Francisco
15h 45m
2 stops
LHR4:25 p.m.London Heathrow
C$ 892
Find similar
Scandinavian Airlines
12 Feb
LHR9:05 p.m.London Heathrow
25h 30m
2 stops
SFO2:35 p.m.San Francisco
19 Feb
SFO7:00 a.m.San Francisco
18h 20m
2 stops
LHR9:20 a.m.London Heathrow
C$ 924
Find similar

TAP AIR PORTUGAL flights from London to San Francisco

Our best TAP AIR PORTUGAL deals on London to San Francisco flight tickets
TAP AIR PORTUGAL
15 Feb
LHR7:55 p.m.London Heathrow
26h 40m
1 stop
SFO2:35 p.m.San Francisco
20 Feb
SFO7:10 p.m.San Francisco
19h 30m
1 stop
LHR10:40 p.m.London Heathrow
C$ 903
Find similar
TAP AIR PORTUGAL
14 Feb
LHR6:00 a.m.London Heathrow
16h 45m
1 stop
SFO2:45 p.m.San Francisco
20 Feb
SFO7:10 p.m.San Francisco
18h 25m
1 stop
LHR9:35 p.m.London Heathrow
C$ 931
Find similar
TAP AIR PORTUGAL
15 Feb
LHR6:30 p.m.London Heathrow
28h 05m
1 stop
SFO2:35 p.m.San Francisco
16 Feb
SFO4:35 p.m.San Francisco
22h 05m
1 stop
LHR10:40 p.m.London Heathrow
C$ 958
Find similar

momondo 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, momondo users made 96,600 searches. Data last updated 15 December 2025.
Use the filters below to find and compare flights from London to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Tue 3/3

9:00 a.m.-4:30 p.m.

1 stop15h 30m

San Francisco

Mon 30/3

2:30 p.m.-11:50 a.m.

1 stop13h 20m

C$ 867

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sat 10/1

8:05 a.m.-5:09 p.m.

1 stop17h 04m

San Francisco

Sat 24/1

8:45 a.m.-9:30 a.m.

1 stop16h 45m

C$ 869

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Tue 13/1

7:50 p.m.-2:35 p.m.

2 stops50h 45m

San Francisco

Thu 26/2

4:40 p.m.-4:00 p.m.

1 stop15h 20m

C$ 873

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 12/1

8:30 a.m.-8:10 p.m.

2 stops19h 40m

San Francisco

Thu 26/2

5:25 p.m.-12:00 p.m.

Nonstop10h 35m

C$ 874

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 2/3

11:30 a.m.-8:10 p.m.

1 stop16h 40m

San Francisco

Wed 25/3

8:30 a.m.-6:30 a.m.

1 stop15h 00m

C$ 876

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 29/4

8:45 a.m.-4:10 p.m.

1 stop15h 25m

San Francisco

Tue 19/5

4:35 p.m.-11:10 a.m.

Nonstop10h 35m

C$ 880

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 12/1

4:40 p.m.-2:50 p.m.

1 stop30h 10m

San Francisco

Mon 26/1

12:50 p.m.-7:25 a.m.

Nonstop10h 35m

C$ 881

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 12/1

4:40 p.m.-2:50 p.m.

1 stop30h 10m

San Francisco

Mon 26/1

12:50 p.m.-7:25 a.m.

Nonstop10h 35m

C$ 883

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Tue 28/4

7:25 a.m.-7:00 p.m.

1 stop19h 35m

San Francisco

Tue 19/5

7:40 p.m.-2:10 p.m.

Nonstop10h 30m

C$ 887

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 4/5

6:30 a.m.-12:40 p.m.

1 stop14h 10m

San Francisco

Tue 19/5

7:40 p.m.-2:10 p.m.

Nonstop10h 30m

C$ 890

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San Francisco from

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

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 San Francisco?

The cheapest month to fly to San Francisco from London is in September. Flight prices, which tend to average around C$ 789, are often lower during this time because this is during the off-season. The month of February is another great option to travel to San Francisco, with average flight prices from London averaging around C$ 794.

What is the cheapest day to depart on your flight to San Francisco?

The cheapest day to depart from London to San Francisco is on a Thursday. Travellers who choose to depart for San Francisco on a Thursday will often find tickets for as low as C$ 800. On the other hand, Monday is the most expensive day to depart from London because it is more convenient for both business and leisure travellers. As a result, prices tend to be around C$ 1,862.

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

Flying to San Francisco from London in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as C$ 982 when looking at flights departing in the afternoon. In contrast, the most expensive time of day to depart to San Francisco is at noon when prices are around C$ 2,171.

What is the cheapest London to San Francisco flight route?

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

How far in advance should I book a flight to San Francisco?

You are more likely to see cheaper flights to San Francisco from London when booking weeks ahead of your departure date. In general, you can expect to find flights to San Francisco for around C$ 938 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Francisco from London for as low as C$ 883 on momondo.

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

There are 2 cabin classes available to choose from on London to San Francisco 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 London to San Francisco flights?

No. A direct flight is the cheapest option for a flight between London to San Francisco.

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

As of December 2025, prices for London to San Francisco flights are approximately 2% more expensive when compared to flights at the same time last year.

When to book flights from London to San Francisco

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

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

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

Best price found

C$ 2,959

Fastest flight time

11h 00m

Direct flights

Every day

Airports in San Francisco

1 airport
The best one-way flight to San Francisco from London in the past 72 hours is C$ 2,959. The best round-trip flight deal from London to San Francisco found on momondo in the last 72 hours is C$ 1,648.
The fastest flight from London to San Francisco takes 11h 00m
Direct flights go from London to San Francisco every day.
There is 1 airport in San Francisco. From London there are direct flights to San Francisco (SFO).
Search flight deals

  • How far is London to San Francisco by plane?

    The distance between London and San Francisco is about 8609.4 km. Flights usually cover this in 11h 00m, depending on flying conditions and air traffic around both airports.

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

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London to San Francisco Airport.

  • What documentation or ID do you need to fly to San Francisco Airport?

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

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

Travelling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
San Mateo
Belmont
Los Altos
San Bruno
Santa Cruz
Newark
Milpitas
Carmel-by-the-Sea
Turlock
South San Francisco
Palo Alto
Cupertino
Mill Valley
Morgan Hill
Los Banos
Mountain View
Pacifica
Woodland
Roseville
Berkeley

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to San Francisco from London.

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

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

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

momondo helps you find the best flight between London and San Francisco by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from London to San Francisco right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of London to San Francisco flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your San Francisco trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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