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

Prices for flights from San Francisco Airport to London Airport are updated daily.

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Francisco Airport to London Airport.

What documentation or ID do you need to fly to London Airport?

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

C$ 275 Cheap Flights from San Francisco to London in 2026

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Find the cheapest flights from San Francisco to London

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:05 p.m. - 5:20 a.m.

SFO

YXU

8h 15m

1 stop

6:10 a.m. - 12:00 p.m.

YXU

SFO

8h 50m

1 stop

C$ 559WestJet

Tue, 9 Jun - Sat, 13 Jun

6:05 p.m. - 5:20 a.m.

SFO

YXU

8h 15m

1 stop

6:10 a.m. - 12:00 p.m.

YXU

SFO

8h 50m

1 stop

C$ 560WestJet

Wed, 10 Jun - Sat, 13 Jun

6:05 p.m. - 5:20 a.m.

SFO

YXU

8h 15m

1 stop

6:10 a.m. - 12:00 p.m.

YXU

SFO

8h 50m

1 stop

C$ 565WestJet

Tue, 9 Jun - Sat, 13 Jun

1:00 p.m. - 5:20 a.m.

SFO

YXU

13h 20m

1 stop

6:10 a.m. - 12:00 p.m.

YXU

SFO

8h 50m

1 stop

C$ 569WestJet

Sat, 16 May - Sat, 23 May

6:00 a.m. - 4:45 p.m.

SFO

YXU

7h 45m

1 stop

6:10 a.m. - 12:00 p.m.

YXU

SFO

8h 50m

1 stop

C$ 592WestJet

Fri, 12 Jun - Sat, 13 Jun

6:00 a.m. - 4:45 p.m.

SFO

YXU

7h 45m

1 stop

6:10 a.m. - 12:00 p.m.

YXU

SFO

8h 50m

1 stop

C$ 600WestJet

Thu, 11 Jun - Fri, 12 Jun

6:05 p.m. - 4:45 p.m.

SFO

YXU

19h 40m

1 stop

2:40 p.m. - 9:55 p.m.

YXU

SFO

10h 15m

2 stops

C$ 603WestJet

Wed, 10 Jun - Fri, 12 Jun

6:05 p.m. - 4:45 p.m.

SFO

YXU

19h 40m

1 stop

6:10 a.m. - 12:00 p.m.

YXU

SFO

8h 50m

1 stop

C$ 607WestJet

Tue, 9 Jun - Fri, 12 Jun

1:00 p.m. - 4:45 p.m.

SFO

YXU

24h 45m

1 stop

6:10 a.m. - 12:00 p.m.

YXU

SFO

8h 50m

1 stop

C$ 627WestJet

Sun, 3 May - Fri, 12 Jun

1:00 p.m. - 4:45 p.m.

SFO

YXU

24h 45m

1 stop

2:40 p.m. - 9:55 p.m.

YXU

SFO

10h 15m

2 stops

C$ 634WestJet

Sun, 3 May - Fri, 12 Jun

United Airlines flights from San Francisco to London, Ontario

Our best United Airlines deals on San Francisco to London, Ontario flight tickets

United Airlines

31 May

SFO6:34 p.m.San Francisco

17h 24m

2 stops

YXU2:58 p.m.London

4 Jun

YXU9:30 a.m.London

9h 05m

1 stop

SFO3:35 p.m.San Francisco

C$ 636

United Airlines

31 May

SFO6:34 p.m.San Francisco

17h 24m

2 stops

YXU2:58 p.m.London

4 Jun

YXU9:30 a.m.London

12h 54m

2 stops

SFO7:24 p.m.San Francisco

C$ 657

United Airlines

1 Jun

SFO6:54 p.m.San Francisco

17h 04m

2 stops

YXU2:58 p.m.London

4 Jun

YXU3:30 p.m.London

8h 40m

1 stop

SFO9:10 p.m.San Francisco

C$ 699

WestJet flights from San Francisco to London, Ontario

Our best WestJet deals on San Francisco to London, Ontario flight tickets

WestJet

9 Jun

SFO6:05 p.m.San Francisco

8h 15m

1 stop

YXU5:20 a.m.London

13 Jun

YXU6:10 a.m.London

8h 50m

1 stop

SFO12:00 p.m.San Francisco

C$ 559

WestJet

10 Jun

SFO6:05 p.m.San Francisco

8h 15m

1 stop

YXU5:20 a.m.London

13 Jun

YXU6:10 a.m.London

8h 50m

1 stop

SFO12:00 p.m.San Francisco

C$ 560

WestJet

9 Jun

SFO6:05 p.m.San Francisco

8h 15m

1 stop

YXU5:20 a.m.London

13 Jun

YXU6:10 a.m.London

8h 50m

1 stop

SFO12:00 p.m.San Francisco

C$ 565

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Tue 9/6

6:05 p.m.-5:20 a.m.

1 stop8h 15m

London

Sat 13/6

6:10 a.m.-12:00 p.m.

1 stop8h 50m

C$ 559

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Wed 10/6

6:05 p.m.-5:20 a.m.

1 stop8h 15m

London

Sat 13/6

6:10 a.m.-12:00 p.m.

1 stop8h 50m

C$ 560

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Tue 9/6

6:05 p.m.-5:20 a.m.

1 stop8h 15m

London

Sat 13/6

6:10 a.m.-12:00 p.m.

1 stop8h 50m

C$ 565

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Sat 16/5

1:00 p.m.-5:20 a.m.

1 stop13h 20m

London

Sat 23/5

6:10 a.m.-12:00 p.m.

1 stop8h 50m

C$ 569

Quickest round-trip

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Fri 12/6

6:00 a.m.-4:45 p.m.

1 stop7h 45m

London

Sat 13/6

6:10 a.m.-12:00 p.m.

1 stop8h 50m

C$ 592

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Thu 11/6

6:00 a.m.-4:45 p.m.

1 stop7h 45m

London

Fri 12/6

6:10 a.m.-12:00 p.m.

1 stop8h 50m

C$ 600

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Wed 10/6

6:05 p.m.-4:45 p.m.

1 stop19h 40m

London

Fri 12/6

2:40 p.m.-9:55 p.m.

2 stops10h 15m

C$ 603

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Tue 9/6

6:05 p.m.-4:45 p.m.

1 stop19h 40m

London

Fri 12/6

6:10 a.m.-12:00 p.m.

1 stop8h 50m

C$ 607

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Sun 3/5

1:00 p.m.-4:45 p.m.

1 stop24h 45m

London

Fri 12/6

6:10 a.m.-12:00 p.m.

1 stop8h 50m

C$ 627

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Sun 3/5

1:00 p.m.-4:45 p.m.

1 stop24h 45m

London

Fri 12/6

2:40 p.m.-9:55 p.m.

2 stops10h 15m

C$ 634

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

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 airline that flies from San Francisco to London?

WestJet, Delta, and United Airlines are the most popular carriers operating from San Francisco to London

Which airlines fly to London, Ontario?

Porter Airlines, Air Canada and United Airlines are the top three most popular airlines that fly to London, Ontario from San Francisco according to our data. Porter Airlines is the first choice among our users, with 48% of people opting to fly with this airline when travelling to London, Ontario. Keep in mind that there are 6 different airlines that fly to London, Ontario on a routine basis, so you have a few additional options to choose from.

When to book flights from San Francisco to London, Ontario

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

Estimated round-trip price

Cheap San Francisco to London, Ontario (SFO to YXU) flight deals and tips

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

Fastest flight time	8h 15m
Direct flights	None

The fastest flight from San Francisco to London, Ontario takes 8h 15m

There are no direct flights from San Francisco to London, Ontario. There are no popular flight routes from San Francisco to London, Ontario.

Search flight deals

How far is San Francisco to London by plane?
There are 3496.6 km between San Francisco and London. 8h 15m is a normal flight duration for this route.
When did momondo last update prices for flights from San Francisco Airport to London Airport?
Prices for flights from San Francisco Airport to London Airport are updated daily.
How old do you have to be to fly from San Francisco Airport to London Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Francisco Airport to London Airport.
What documentation or ID do you need to fly to London Airport?
The travel and health documents required for your trip to London 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 London Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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Port Stanley

Why use momondo?

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

Finding the right flight to London from San Francisco is quick and easy when you have a range of options in front of you, from reputable agents and recognizable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to London quick and easy, saving you time and money.

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

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

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

momondo provides multiple filters to help you find the best flight to London from San Francisco. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

If you are simply researching potential flights to London, momondo offers a useful price alert feature which will track prices for flights to London from San Francisco and alert you when they change.