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$ 242 Cheap Flights from San Francisco to London, Ontario in 2026

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.

1:00 p.m. - 5:20 a.m.SFO San Francisco-YXU London

13h 20m1 stop Calgary

6:10 a.m. - 12:00 p.m.YXU London-SFO San Francisco

8h 50m1 stop Calgary

C$ 644WestJet

Sun, 20 Sep - Sun, 27 Sep

1:10 p.m. - 5:20 a.m.SFO San Francisco-YXU London

37h 10m2 stops Phoenix Sky Harbor Intl Calgary

6:10 a.m. - 12:00 p.m.YXU London-SFO San Francisco

8h 50m1 stop Calgary

C$ 655Multiple Airlines

Sun, 20 Sep - Sun, 27 Sep

10:45 p.m. - 9:20 a.m.SFO San Francisco-YXU London

7h 35m1 stop Toronto Pearson Intl

3:30 p.m. - 9:49 p.m.YXU London-SFO San Francisco

9h 19m1 stop Toronto Pearson Intl

C$ 800Air Canada

Mon, 21 Sep - Fri, 25 Sep

8:10 a.m. - 9:40 p.m.SFO San Francisco-YXU London

10h 30m2 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl

10:05 a.m. - 3:24 p.m.YXU London-SFO San Francisco

8h 19m1 stop Toronto Pearson Intl

C$ 811Air Canada

Mon, 21 Sep - Fri, 25 Sep

8:10 a.m. - 9:40 p.m.SFO San Francisco-YXU London

10h 30m2 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl

10:05 a.m. - 3:24 p.m.YXU London-SFO San Francisco

8h 19m1 stop Toronto Pearson Intl

C$ 812Air Canada

Mon, 21 Sep - Fri, 25 Sep

1:00 p.m. - 4:45 p.m.SFO San Francisco-YXU London

24h 45m1 stop Calgary

6:10 a.m. - 12:00 p.m.YXU London-SFO San Francisco

8h 50m1 stop Calgary

C$ 819WestJet

Wed, 23 Sep - Wed, 30 Sep

8:10 a.m. - 9:40 p.m.SFO San Francisco-YXU London

10h 30m2 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl

5:40 a.m. - 6:31 p.m.YXU London-SFO San Francisco

15h 51m2 stops Toronto Pearson Intl Vancouver Intl

C$ 845Air Canada

Mon, 21 Sep - Fri, 25 Sep

6:00 a.m. - 4:45 p.m.SFO San Francisco-YXU London

7h 45m1 stop Calgary

5:55 p.m. - 5:07 p.m.YXU London-SFO San Francisco

26h 12m3 stops Calgary Edmonton Minneapolis St Paul

C$ 879Multiple Airlines

Sun, 20 Sep - Sun, 27 Sep

6:05 p.m. - 5:20 a.m.SFO San Francisco-YXU London

8h 15m1 stop Calgary

6:10 a.m. - 12:00 p.m.YXU London-SFO San Francisco

8h 50m1 stop Calgary

C$ 935WestJet

Fri, 28 Aug - Mon, 31 Aug

6:05 p.m. - 5:20 a.m.SFO San Francisco-YXU London

8h 15m1 stop Calgary

6:10 a.m. - 12:00 p.m.YXU London-SFO San Francisco

8h 50m1 stop Calgary

C$ 939WestJet

Fri, 28 Aug - Mon, 31 Aug

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WestJet flights from San Francisco to London, Ontario

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

WestJet

20 Sep

SFO1:00 p.m.San Francisco

13h 20m

1 stop

YXU5:20 a.m.London

27 Sep

YXU6:10 a.m.London

8h 50m

1 stop

SFO12:00 p.m.San Francisco

C$ 644

WestJet

23 Sep

SFO1:00 p.m.San Francisco

24h 45m

1 stop

YXU4:45 p.m.London

30 Sep

YXU6:10 a.m.London

8h 50m

1 stop

SFO12:00 p.m.San Francisco

C$ 819

WestJet

28 Aug

SFO6:05 p.m.San Francisco

8h 15m

1 stop

YXU5:20 a.m.London

31 Aug

YXU6:10 a.m.London

8h 50m

1 stop

SFO12:00 p.m.San Francisco

C$ 935

Air Canada flights from San Francisco to London, Ontario

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

Air Canada

21 Sep

SFO10:45 p.m.San Francisco

7h 35m

1 stop

YXU9:20 a.m.London

25 Sep

YXU3:30 p.m.London

9h 19m

1 stop

SFO9:49 p.m.San Francisco

C$ 800

Air Canada

21 Sep

SFO8:10 a.m.San Francisco

10h 30m

2 stops

YXU9:40 p.m.London

25 Sep

YXU10:05 a.m.London

8h 19m

1 stop

SFO3:24 p.m.San Francisco

C$ 811

Air Canada

21 Sep

SFO8:10 a.m.San Francisco

10h 30m

2 stops

YXU9:40 p.m.London

25 Sep

YXU10:05 a.m.London

8h 19m

1 stop

SFO3:24 p.m.San Francisco

C$ 812

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 San Francisco - YXU London

SFOYXU

San Francisco

Sun 20/9

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

1 stop13h 20m

London

Sun 27/9

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

1 stop8h 50m

C$ 644

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Sun 20/9

1:10 p.m.-5:20 a.m.

2 stops37h 10m

London

Sun 27/9

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

1 stop8h 50m

C$ 655

Quickest round-trip

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Mon 21/9

10:45 p.m.-9:20 a.m.

1 stop7h 35m

London

Fri 25/9

3:30 p.m.-9:49 p.m.

1 stop9h 19m

C$ 800

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Mon 21/9

8:10 a.m.-9:40 p.m.

2 stops10h 30m

London

Fri 25/9

10:05 a.m.-3:24 p.m.

1 stop8h 19m

C$ 811

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Mon 21/9

8:10 a.m.-9:40 p.m.

2 stops10h 30m

London

Fri 25/9

10:05 a.m.-3:24 p.m.

1 stop8h 19m

C$ 812

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Wed 23/9

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

1 stop24h 45m

London

Wed 30/9

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

1 stop8h 50m

C$ 819

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Mon 21/9

8:10 a.m.-9:40 p.m.

2 stops10h 30m

London

Fri 25/9

5:40 a.m.-6:31 p.m.

2 stops15h 51m

C$ 845

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Sun 20/9

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

1 stop7h 45m

London

Sun 27/9

5:55 p.m.-5:07 p.m.

3 stops26h 12m

C$ 879

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Fri 28/8

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

1 stop8h 15m

London

Mon 31/8

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

1 stop8h 50m

C$ 935

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Fri 28/8

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

1 stop8h 15m

London

Mon 31/8

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

1 stop8h 50m

C$ 939

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 and Air Canada 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 46% of people opting to fly with this airline when travelling to London, Ontario. Keep in mind that there are 5 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	13h 40m
Direct flights	None

The fastest flight from San Francisco to London, Ontario takes 13h 40m

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

Frequently asked questions about flying from San Francisco to London, Ontario

How far is San Francisco to London by plane?
There are 3496.6 km between San Francisco and London. 13h 40m 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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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.