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$ 228 Cheap Flights from San Francisco to London, Ontario in 2026/27

Find the cheapest flights from San Francisco to London

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:00 a.m. - 5:20 a.m.SFO San Francisco-YXU London

20h 20m1 stop Calgary

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

8h 50m1 stop Calgary

C$ 525WestJet

Tue, 20 Oct - Thu, 22 Oct

6:00 a.m. - 5:20 a.m.SFO San Francisco-YXU London

20h 20m1 stop Calgary

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

8h 50m1 stop Calgary

C$ 539WestJet

Tue, 20 Oct - Thu, 22 Oct

8:25 a.m. - 9:57 p.m.SFO San Francisco-YXU London

10h 32m1 stop Toronto Pearson Intl

5:30 a.m. - 1:51 p.m.YXU London-SFO San Francisco

11h 21m2 stops Toronto Pearson Intl Vancouver Intl

C$ 546Air Canada

Thu, 5 Nov - Thu, 12 Nov

4:30 p.m. - 8:25 a.m.SFO San Francisco-YXU London

12h 55m2 stops Vancouver Intl Toronto Pearson Intl

6:20 p.m. - 12:07 p.m.YXU London-SFO San Francisco

20h 47m2 stops Toronto Pearson Intl Edmonton

C$ 567Air Canada

Tue, 20 Oct - Thu, 22 Oct

1:35 p.m. - 8:25 a.m.SFO San Francisco-YXU London

15h 50m1 stop Toronto Pearson Intl

8:20 p.m. - 3:21 p.m.YXU London-SFO San Francisco

22h 01m2 stops Toronto Pearson Intl Vancouver Intl

C$ 580Air Canada

Tue, 20 Oct - Thu, 22 Oct

1:35 p.m. - 8:25 a.m.SFO San Francisco-YXU London

15h 50m1 stop Toronto Pearson Intl

6:20 p.m. - 12:07 p.m.YXU London-SFO San Francisco

20h 47m2 stops Toronto Pearson Intl Edmonton

C$ 594Air Canada

Tue, 20 Oct - Thu, 22 Oct

1:35 p.m. - 8:25 a.m.SFO San Francisco-YXU London

15h 50m1 stop Toronto Pearson Intl

3:30 p.m. - 11:20 p.m.YXU London-SFO San Francisco

10h 50m2 stops Toronto Pearson Intl Vancouver Intl

C$ 607Air Canada

Sat, 17 Oct - Sat, 24 Oct

12:15 p.m. - 8:25 a.m.SFO San Francisco-YXU London

17h 10m2 stops Vancouver Intl Toronto Pearson Intl

3:30 p.m. - 11:20 p.m.YXU London-SFO San Francisco

10h 50m2 stops Toronto Pearson Intl Vancouver Intl

C$ 615Air Canada

Sat, 17 Oct - Sat, 24 Oct

6:00 a.m. - 5:20 a.m.SFO San Francisco-YXU London

20h 20m1 stop Calgary

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

8h 50m1 stop Calgary

C$ 663WestJet

Tue, 20 Oct - Thu, 22 Oct

4:30 p.m. - 8:25 a.m.SFO San Francisco-YXU London

12h 55m2 stops Vancouver Intl Toronto Pearson Intl

8:20 p.m. - 10:39 a.m.YXU London-SFO San Francisco

17h 19m1 stop Toronto Pearson Intl

C$ 686Air Canada

Tue, 20 Oct - Thu, 22 Oct

Cheap last-minute flights

Enter your travel dates to find the best prices.

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$ 1,177WestJet

Wed, 30 Sep - Sun, 4 Oct

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

7h 45m1 stop Calgary

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

8h 50m1 stop Calgary

C$ 1,260WestJet

Fri, 2 Oct - Mon, 5 Oct

5:00 a.m. - 5:45 p.m.SFO San Francisco-YXU London

9h 45m2 stops Denver Intl Toronto Pearson Intl

6:20 p.m. - 9:08 a.m.YXU London-SFO San Francisco

17h 48m1 stop Toronto Pearson Intl

C$ 1,263Air Canada

Fri, 2 Oct - Mon, 5 Oct

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$ 1,332WestJet

Fri, 2 Oct - Mon, 5 Oct

9:45 a.m. - 5:20 a.m.SFO San Francisco-YXU London

40h 35m2 stops Vancouver Intl Calgary

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

8h 50m1 stop Calgary

C$ 1,337Multiple Airlines

Sun, 27 Sep - Sun, 4 Oct

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

7h 45m1 stop Calgary

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

14h 50m3 stops Calgary Edmonton Vancouver Intl

C$ 1,424Multiple Airlines

Fri, 2 Oct - Mon, 5 Oct

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

7h 45m1 stop Calgary

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

8h 50m1 stop Calgary

C$ 1,460WestJet

Sun, 27 Sep - Sun, 4 Oct

6:45 p.m. - 5:20 a.m.SFO San Francisco-YXU London

31h 35m3 stops Vancouver Intl Kelowna Calgary

6:10 a.m. - 6:24 p.m.YXU London-SFO San Francisco

39h 14m3 stops Calgary Vancouver Intl Las Vegas Harry Reid Intl

C$ 1,539Multiple Airlines

Fri, 2 Oct - Mon, 5 Oct

6:45 p.m. - 5:20 a.m.SFO San Francisco-YXU London

31h 35m3 stops Vancouver Intl Kelowna Calgary

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

14h 50m2 stops Calgary Vancouver Intl

C$ 1,554Multiple Airlines

Fri, 2 Oct - Mon, 5 Oct

7:30 p.m. - 5:43 p.m.SFO San Francisco-YXU London

19h 13m2 stops Vancouver Intl Toronto Pearson Intl

8:20 p.m. - 10:20 a.m.YXU London-SFO San Francisco

17h 00m2 stops Toronto Pearson Intl Vancouver Intl

C$ 1,628Air Canada

Fri, 2 Oct - Mon, 5 Oct

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Air Canada flights from San Francisco to London, Ontario

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

Air Canada

5 Nov

SFO8:25 a.m.San Francisco

10h 32m

1 stop

YXU9:57 p.m.London

12 Nov

YXU5:30 a.m.London

11h 21m

2 stops

SFO1:51 p.m.San Francisco

C$ 546

Air Canada

20 Oct

SFO4:30 p.m.San Francisco

12h 55m

2 stops

YXU8:25 a.m.London

22 Oct

YXU6:20 p.m.London

20h 47m

2 stops

SFO12:07 p.m.San Francisco

C$ 567

Air Canada

20 Oct

SFO7:30 p.m.San Francisco

19h 13m

2 stops

YXU5:43 p.m.London

22 Oct

YXU8:20 p.m.London

22h 01m

2 stops

SFO3:21 p.m.San Francisco

C$ 580

WestJet flights from San Francisco to London, Ontario

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

WestJet

20 Oct

SFO6:00 a.m.San Francisco

20h 20m

1 stop

YXU5:20 a.m.London

22 Oct

YXU6:10 a.m.London

8h 50m

1 stop

SFO12:00 p.m.San Francisco

C$ 525

WestJet

20 Oct

SFO6:00 a.m.San Francisco

20h 20m

1 stop

YXU5:20 a.m.London

22 Oct

YXU6:10 a.m.London

8h 50m

1 stop

SFO12:00 p.m.San Francisco

C$ 539

WestJet

20 Oct

SFO6:00 a.m.San Francisco

20h 20m

1 stop

YXU5:20 a.m.London

22 Oct

YXU6:10 a.m.London

8h 50m

1 stop

SFO12:00 p.m.San Francisco

C$ 663

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

Tue 20/10

6:00 a.m.-5:20 a.m.

1 stop20h 20m

London

Thu 22/10

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

1 stop8h 50m

C$ 525

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Tue 20/10

6:00 a.m.-5:20 a.m.

1 stop20h 20m

London

Thu 22/10

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

1 stop8h 50m

C$ 539

Quickest round-trip

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Thu 5/11

8:25 a.m.-9:57 p.m.

1 stop10h 32m

London

Thu 12/11

5:30 a.m.-1:51 p.m.

2 stops11h 21m

C$ 546

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Tue 20/10

4:30 p.m.-8:25 a.m.

2 stops12h 55m

London

Thu 22/10

6:20 p.m.-12:07 p.m.

2 stops20h 47m

C$ 567

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Tue 20/10

1:35 p.m.-8:25 a.m.

1 stop15h 50m

London

Thu 22/10

8:20 p.m.-3:21 p.m.

2 stops22h 01m

C$ 580

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Tue 20/10

1:35 p.m.-8:25 a.m.

1 stop15h 50m

London

Thu 22/10

6:20 p.m.-12:07 p.m.

2 stops20h 47m

C$ 594

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Sat 17/10

1:35 p.m.-8:25 a.m.

1 stop15h 50m

London

Sat 24/10

3:30 p.m.-11:20 p.m.

2 stops10h 50m

C$ 607

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Sat 17/10

12:15 p.m.-8:25 a.m.

2 stops17h 10m

London

Sat 24/10

3:30 p.m.-11:20 p.m.

2 stops10h 50m

C$ 615

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Tue 20/10

6:00 a.m.-5:20 a.m.

1 stop20h 20m

London

Thu 22/10

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

1 stop8h 50m

C$ 663

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Tue 20/10

4:30 p.m.-8:25 a.m.

2 stops12h 55m

London

Thu 22/10

8:20 p.m.-10:39 a.m.

1 stop17h 19m

C$ 686

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 43% of people opting to fly with this airline when travelling to London, Ontario. Keep in mind that there are 4 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

Best price found	C$ 228
Fastest flight time	11h 45m
Direct flights	None

The best one-way flight to London, Ontario from San Francisco in the past 72 hours is C$ 228. The best round-trip flight deal from San Francisco to London, Ontario found on momondo in the last 72 hours is C$ 525.

The fastest flight from San Francisco to London, Ontario takes 11h 45m

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. 11h 45m 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.