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Cheap flights from London Heathrow Airport to San Francisco from €408

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 Heathrow Airport to San Francisco departing on 31/3. 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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Find the cheapest flights from London Heathrow Airport to San Francisco

Cheap return flights

These are some of the best return flight deals from London Heathrow Airport to San Francisco that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from London Heathrow Airport to San Francisco.

Cheap last-minute flights

Planning a quick getaway from London Heathrow Airport to San Francisco? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to San Francisco, so you can enjoy a seamless trip without stopovers.

Cheap bus & train deals from London Heathrow Airport to San Francisco

Find recent round-trip train or bus tickets from London Heathrow Airport to San Francisco.

All round-trip flight deals to San Francisco

The cheapest plane tickets to San Francisco found on KAYAK recently.
19:30 - 15:40LHR-SFO
28h 10m1 stop
17:30 - 18:30SFO-LHR
17h 00m1 stop
€496Scandinavian Airlines
Find Deal
Wed, 5 Feb - Mon, 10 Feb
08:55 - 16:25LHR-SFO
15h 30m1 stop
12:50 - 07:25SFO-LHR
10h 35mdirect
€499
Find Deal
Wed, 5 Feb - Mon, 10 Feb
19:55 - 14:15LHR-SFO
26h 20m1 stop
16:35 - 17:30SFO-LHR
16h 55m1 stop
€500TAP AIR PORTUGAL
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Thu, 6 Feb - Wed, 26 Feb
07:40 - 14:50LHR-SFO
15h 10m1 stop
12:50 - 07:25SFO-LHR
10h 35mdirect
€502Lufthansa
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Sat, 8 Feb - Sun, 23 Feb
06:00 - 21:42LHR-SFO
23h 42m2 stops
08:25 - 11:15SFO-LHR
18h 50m2 stops
€503Austrian Airlines
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Sat, 1 Feb - Tue, 4 Feb
07:40 - 14:50LHR-SFO
15h 10m1 stop
12:50 - 07:25SFO-LHR
10h 35mdirect
€504Lufthansa
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Tue, 11 Feb - Thu, 20 Feb
08:45 - 18:45LHR-SFO
18h 00m1 stop
13:00 - 10:10SFO-LHR
13h 10m1 stop
€507United Airlines
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Fri, 14 Feb - Fri, 28 Feb
06:30 - 20:02LHR-SFO
20h 32m2 stops
06:00 - 10:10SFO-LHR
21h 10m1 stop
€509United Airlines
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Sat, 22 Mar - Sat, 29 Mar
12:05 - 21:42LHR-SFO
41h 37m2 stops
07:15 - 06:55SFO-LHR
15h 40m1 stop
€515Austrian Airlines
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Wed, 22 Jan - Wed, 19 Feb
06:00 - 14:55LHR-SFO
16h 55m1 stop
19:15 - 18:55SFO-LHR
15h 40m1 stop
€521TAP AIR PORTUGAL
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Sat, 8 Feb - Fri, 21 Feb
20:50 - 18:00LHR-SFO
29h 10m1 stop
€408
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Mon, 31 Mar
06:00 - 14:35LHR-SFO
16h 35m1 stop
€536TAP AIR PORTUGAL
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Thu, 8 May
18:30 - 14:55LHR-SFO
28h 25m1 stop
€537TAP AIR PORTUGAL
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Fri, 7 Feb
14:50 - 13:06LHR-SFO
30h 16m1 stop
€937WestJet
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Mon, 10 Feb
14:50 - 13:06LHR-SFO
30h 16m1 stop
€989WestJet
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Thu, 6 Feb
07:25 - 22:13LHR-SFO
22h 48m1 stop
€1,046JetBlue
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Tue, 31 Dec
12:20 - 00:14LHR-SFO
19h 54m1 stop
€1,049JetBlue
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Wed, 8 Jan
09:30 - 21:14LHR-SFO
19h 44m3 stops
€1,210United Airlines
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Thu, 8 May
08:00 - 00:30LHR-SFO
23h 30m3 stops
€1,218United Airlines
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Thu, 13 Mar
08:50 - 15:30LHR-SFO
14h 40m1 stop
€1,301Aer Lingus
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Fri, 3 Jan
11:40 - 14:45LHR-SFO
11h 05mdirect
11:50 - 20:10SFO-LHR
24h 20m1 stop
€612Delta
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Thu, 26 Dec - Thu, 9 Jan
09:10 - 21:14LHR-SFO
20h 04m1 stop
11:50 - 20:10SFO-LHR
24h 20m1 stop
€618Delta
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Tue, 24 Dec - Thu, 9 Jan
10:50 - 23:55LHR-SFO
21h 05m1 stop
06:15 - 07:05SFO-LHR
16h 50m1 stop
€620Virgin Atlantic
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Tue, 24 Dec - Sat, 11 Jan
10:50 - 20:18LHR-SFO
17h 28m1 stop
16:40 - 10:55SFO-LHR
10h 15mdirect
€626Virgin Atlantic
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Tue, 24 Dec - Sat, 11 Jan
13:45 - 16:55LHR-SFO
11h 10mdirect
21:25 - 20:35SFO-LHR
15h 10m1 stop
€643United Airlines
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Tue, 24 Dec - Wed, 8 Jan
13:45 - 16:55LHR-SFO
11h 10mdirect
12:50 - 07:25SFO-LHR
10h 35mdirect
€645United Airlines
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Tue, 24 Dec - Thu, 9 Jan
19:05 - 21:06LHR-SFO
34h 01m2 stops
13:00 - 16:00SFO-LHR
19h 00m1 stop
€707British Airways
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Tue, 24 Dec - Tue, 31 Dec
14:50 - 20:47LHR-SFO
37h 57m2 stops
08:25 - 21:40SFO-LHR
29h 15m2 stops
€718Austrian Airlines
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Mon, 23 Dec - Wed, 5 Mar
14:50 - 18:45LHR-SFO
35h 55m2 stops
21:05 - 14:20SFO-LHR
33h 15m2 stops
€750Austrian Airlines
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Mon, 23 Dec - Mon, 7 Apr
16:55 - 23:38LHR-SFO
14h 43m1 stop
17:30 - 12:00SFO-LHR
10h 30mdirect
€4,343British Airways
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Thu, 26 Dec - Wed, 15 Jan
11:40 - 14:45LHR-SFO
11h 05mdirect
16:40 - 10:55SFO-LHR
10h 15mdirect
€523Virgin Atlantic
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Wed, 5 Feb - Mon, 10 Feb
10:05 - 13:15LHR-SFO
11h 10mdirect
12:50 - 07:25SFO-LHR
10h 35mdirect
€532United Airlines
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Mon, 20 Jan - Sun, 26 Jan
10:05 - 13:15LHR-SFO
11h 10mdirect
12:50 - 07:25SFO-LHR
10h 35mdirect
€534Austrian Airlines
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Sat, 18 Jan - Sat, 25 Jan
10:05 - 13:15LHR-SFO
11h 10mdirect
17:25 - 12:00SFO-LHR
10h 35mdirect
€535
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Mon, 13 Jan - Sun, 26 Jan
11:45 - 15:00LHR-SFO
11h 15mdirect
17:30 - 12:00SFO-LHR
10h 30mdirect
€538British Airways
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Sun, 9 Feb - Sun, 23 Feb
11:45 - 15:00LHR-SFO
11h 15mdirect
17:30 - 12:00SFO-LHR
10h 30mdirect
€540Finnair
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Fri, 7 Feb - Wed, 26 Feb
10:05 - 13:15LHR-SFO
11h 10mdirect
12:50 - 07:25SFO-LHR
10h 35mdirect
€566Austrian Airlines
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Tue, 11 Feb - Thu, 20 Feb
11:45 - 16:00LHR-SFO
11h 15mdirect
21:40 - 15:15SFO-LHR
10h 35mdirect
€592
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Thu, 20 Mar - Fri, 28 Mar
10:45 - 13:50LHR-SFO
11h 05mdirect
19:20 - 13:45SFO-LHR
10h 25mdirect
€622British Airways
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Fri, 23 May - Fri, 30 May
14:15 - 17:25LHR-SFO
11h 10mdirect
19:20 - 13:45SFO-LHR
10h 25mdirect
€633Finnair
Find Deal
Fri, 23 May - Sat, 31 May

Scandinavian Airlines flights from London Heathrow Airport to San Francisco

Our best Scandinavian Airlines deals on London Heathrow Airport to San Francisco flight tickets
Scandinavian Airlines
5 Feb
LHR19:30London Heathrow
28h 10m
1 stop
SFO15:40San Francisco
10 Feb
SFO17:30San Francisco
17h 00m
1 stop
LHR18:30London Heathrow
Scandinavian Airlines
7 Feb
LHR06:40London Heathrow
17h 00m
1 stop
SFO15:40San Francisco
23 Feb
SFO17:30San Francisco
14h 30m
1 stop
LHR16:00London Heathrow
Scandinavian Airlines
9 Feb
LHR21:05London Heathrow
26h 35m
2 stops
SFO15:40San Francisco
20 Feb
SFO17:30San Francisco
16h 10m
1 stop
LHR17:40London Heathrow

United Airlines flights from London Heathrow Airport to San Francisco

Our best United Airlines deals on London Heathrow Airport to San Francisco flight tickets
United Airlines
29 Dec
LHR06:30London Heathrow
21h 35m
1 stop
SFO20:05San Francisco
11 Jan
SFO13:30San Francisco
16h 00m
1 stop
LHR13:30London Heathrow
United Airlines
29 Dec
LHR08:30London Heathrow
19h 35m
1 stop
SFO20:05San Francisco
11 Jan
SFO08:30San Francisco
14h 40m
1 stop
LHR07:10London Heathrow
United Airlines
14 Feb
LHR08:45London Heathrow
18h 00m
1 stop
SFO18:45San Francisco
28 Feb
SFO12:50San Francisco
10h 35m
LHR07:25London Heathrow

See travel insights to San Francisco from

How to get the cheapest flight ticket from London Heathrow Airport 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 Heathrow Airport is in February. Flight prices, which tend to average around €521, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of February, then book flights to San Francisco from London Heathrow Airport during November instead. Flights to San Francisco in November, while not as cheap as those in February, still average around €560.

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

On average, the least expensive day to fly to San Francisco from London Heathrow Airport is on a Monday. momondo users have found tickets for Monday departures for as low as €0. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Saturday is the most expensive day to depart from London Heathrow Airport because it is more convenient for both business and leisure travellers. As a result, prices tend to be around €685.

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

According to our data, the cheapest time of day to fly to San Francisco is at midday. momondo users have found flights departing from London Heathrow Airport to San Francisco at midday for as low as €0. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are €700 on average. Flights to San Francisco from London Heathrow Airport in the afternoon are generally more expensive because this time of day is more convenient for travellers’ schedules.

What is the cheapest London Heathrow to San Francisco flight route?

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

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

The best time to book a flight to San Francisco from London Heathrow Airport is 22 days out, which is when prices tend to be around €646. However, in the past 72 hours, people saw flights from London Heathrow Airport for as low as €554.

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

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

You could potentially save up to 87% on your flight if you consider stops on a London Heathrow Airport to San Francisco flight.

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

As of December 2024, prices for London Heathrow Airport to San Francisco flights are approximately 27% more expensive when compared to flights at the same time last year.

When to book flights from London Heathrow Airport to San Francisco

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

Cheap London Heathrow Airport to San Francisco (LHR to SFO) flight deals and tips

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

Best price found

€408

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 Heathrow Airport in the past 72 hours is €408. The best return flight deal from London Heathrow Airport to San Francisco found on momondo in the last 72 hours is €496.
The fastest flight from London Heathrow Airport to San Francisco takes 11h 00m
Direct flights go from London Heathrow Airport to San Francisco every day.
There is 1 airport near San Francisco: San Francisco (SFO)

  • How far is London Heathrow to San Francisco by plane?

    A flight from London Heathrow to San Francisco will travel around 8596.0 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 Heathrow Airport to San Francisco Airport?

    Prices for flights from London Heathrow Airport to San Francisco Airport are refreshed on a daily basis.

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

    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 London Heathrow Airport to San Francisco Airport.

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

    The required travel and health documents for your San Francisco Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's licence and a passport valid for six months after your intended arrival at San Francisco Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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


Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to San Francisco for you.

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

Yes. All flights to San Francisco from London on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search for London to San Francisco flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes. momondo can track prices for London to San Francisco flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.


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