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$ 219 Cheap Flights from San Francisco to London, Ontario in 2026

1 adult

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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.

6:00 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$ 399WestJet

Mon, 12 Oct - Wed, 21 Oct

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$ 432WestJet

Mon, 12 Oct - Wed, 21 Oct

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$ 442WestJet

Sun, 11 Oct - Wed, 21 Oct

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

SFO

YXU

7h 45m

1 stop

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

YXU

SFO

10h 15m

2 stops

C$ 444WestJet

Tue, 28 Jul - Tue, 11 Aug

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

SFO

YXU

7h 45m

1 stop

5:55 p.m. - 9:55 p.m.

YXU

SFO

31h 00m

1 stop

C$ 473WestJet

Tue, 28 Jul - Tue, 11 Aug

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$ 498WestJet

Sun, 28 Jun - Sat, 8 Aug

4:35 p.m. - 9:20 a.m.

SFO

YXU

13h 45m

2 stops

5:40 a.m. - 10:39 a.m.

YXU

SFO

7h 59m

1 stop

C$ 514Air Canada

Sun, 11 Oct - Wed, 21 Oct

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$ 517WestJet

Mon, 29 Jun - Sat, 8 Aug

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$ 526WestJet

Sat, 20 Jun - Thu, 2 Jul

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$ 544WestJet

Wed, 24 Jun - Wed, 5 Aug

Air Canada flights from San Francisco to London, Ontario

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

Air Canada

11 Oct

SFO4:35 p.m.San Francisco

13h 45m

2 stops

YXU9:20 a.m.London

21 Oct

YXU5:40 a.m.London

7h 59m

1 stop

SFO10:39 a.m.San Francisco

C$ 514

Air Canada

11 Oct

SFO7:10 a.m.San Francisco

11h 30m

2 stops

YXU9:40 p.m.London

21 Oct

YXU6:20 p.m.London

20h 47m

2 stops

SFO12:07 p.m.San Francisco

C$ 565

Air Canada

13 Jul

SFO7:30 p.m.San Francisco

19h 15m

2 stops

YXU5:45 p.m.London

15 Jul

YXU6:20 p.m.London

20h 48m

2 stops

SFO12:08 p.m.San Francisco

C$ 584

WestJet flights from San Francisco to London, Ontario

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

WestJet

12 Oct

SFO6:00 a.m.San Francisco

7h 45m

1 stop

YXU4:45 p.m.London

21 Oct

YXU6:10 a.m.London

8h 50m

1 stop

SFO12:00 p.m.San Francisco

C$ 399

WestJet

12 Oct

SFO6:00 a.m.San Francisco

7h 45m

1 stop

YXU4:45 p.m.London

21 Oct

YXU6:10 a.m.London

8h 50m

1 stop

SFO12:00 p.m.San Francisco

C$ 432

WestJet

11 Oct

SFO1:00 p.m.San Francisco

13h 20m

1 stop

YXU5:20 a.m.London

21 Oct

YXU6:10 a.m.London

8h 50m

1 stop

SFO12:00 p.m.San Francisco

C$ 442

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

Quickest round-trip

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Mon 12/10

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

1 stop7h 45m

London

Wed 21/10

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

1 stop8h 50m

C$ 399

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Mon 12/10

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

1 stop7h 45m

London

Wed 21/10

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

1 stop8h 50m

C$ 432

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Sun 11/10

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

1 stop13h 20m

London

Wed 21/10

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

1 stop8h 50m

C$ 442

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Tue 28/7

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

1 stop7h 45m

London

Tue 11/8

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

2 stops10h 15m

C$ 444

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Tue 28/7

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

1 stop7h 45m

London

Tue 11/8

5:55 p.m.-9:55 p.m.

1 stop31h 00m

C$ 473

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Sun 28/6

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

1 stop8h 15m

London

Sat 8/8

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

1 stop8h 50m

C$ 498

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Sun 11/10

4:35 p.m.-9:20 a.m.

2 stops13h 45m

London

Wed 21/10

5:40 a.m.-10:39 a.m.

1 stop7h 59m

C$ 514

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Mon 29/6

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

1 stop7h 45m

London

Sat 8/8

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

1 stop8h 50m

C$ 517

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Sat 20/6

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

1 stop8h 15m

London

Thu 2/7

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

1 stop8h 50m

C$ 526

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Wed 24/6

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

1 stop7h 45m

London

Wed 5/8

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

1 stop8h 50m

C$ 544

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?

Air Canada, WestJet, 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 51% 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

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. 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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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.