What airlines fly to London, Ontario?

Air Canada, Porter Airlines and United Airlines are the top three most popular airlines that fly to London, Ontario from San Francisco according to our data. Air Canada is the first choice among our users, with 38% of people opting to fly with this airline when traveling to London, Ontario. Keep in mind that there are 8 different airlines that fly to London, Ontario on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from San Francisco to London?

Air Canada is the most popular carrier operating from San Francisco to London

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 were last updated today.

How many operators does momondo search for flights from San Francisco Airport to London Airport?

As of October 2026, there are 2 operators available to choose from for flights from San Francisco Airport to London Airport.

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

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

The necessary travel and health documents for your London Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$440 Cheap Flights from San Francisco to London, Ontario in 2026/27

Discover deals from 900+ travel sites with momondo.

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.

4:40 pm - 5:35 amSFO San Francisco-YXU London

9h 55m1 stop Calgary

6:40 am - 3:50 pmYXU London-SFO San Francisco

12h 10m1 stop Calgary

$440WestJet

Thu, Nov 5 - Fri, Nov 13

8:25 am - 8:27 pmSFO San Francisco-YXU London

9h 02m1 stop Toronto Pearson Intl

9:05 pm - 11:10 amYXU London-SFO San Francisco

17h 05m1 stop Toronto Pearson Intl

$464Air Canada

Sat, Nov 14 - Sat, Nov 21

8:25 am - 8:27 pmSFO San Francisco-YXU London

9h 02m1 stop Toronto Pearson Intl

9:05 pm - 1:51 pmYXU London-SFO San Francisco

19h 46m2 stops Toronto Pearson Intl Vancouver Intl

$469Air Canada

Sat, Nov 14 - Sat, Nov 21

4:40 pm - 5:35 amSFO San Francisco-YXU London

9h 55m1 stop Calgary

6:40 am - 8:19 amYXU London-SFO San Francisco

28h 39m2 stops Calgary Las Vegas Harry Reid Intl

$511Multiple Airlines

Thu, Nov 5 - Fri, Nov 13

4:40 pm - 5:35 amSFO San Francisco-YXU London

9h 55m1 stop Calgary

6:40 am - 8:19 amYXU London-SFO San Francisco

28h 39m3 stops Calgary Los Angeles Las Vegas Harry Reid Intl

$512Multiple Airlines

Thu, Nov 5 - Fri, Nov 13

4:40 pm - 8:37 amSFO San Francisco-YXU London

12h 57m1 stop Toronto Pearson Intl

3:25 pm - 9:30 pmYXU London-SFO San Francisco

9h 05m1 stop Toronto Pearson Intl

$582Air Canada

Fri, Nov 13 - Fri, Nov 20

9:09 am - 5:35 amSFO San Francisco-YXU London

17h 26m2 stops Los Angeles Calgary

6:40 am - 8:19 amYXU London-SFO San Francisco

28h 39m3 stops Calgary Los Angeles Las Vegas Harry Reid Intl

$589Multiple Airlines

Thu, Nov 5 - Fri, Nov 13

6:30 am - 8:27 pmSFO San Francisco-YXU London

10h 57m2 stops Vancouver Intl Toronto Pearson Intl

9:15 am - 3:40 pmYXU London-SFO San Francisco

9h 25m1 stop Toronto Pearson Intl

$596Air Canada

Fri, Nov 13 - Fri, Nov 20

6:30 am - 8:27 pmSFO San Francisco-YXU London

10h 57m2 stops Vancouver Intl Toronto Pearson Intl

9:05 pm - 1:51 pmYXU London-SFO San Francisco

19h 46m2 stops Toronto Pearson Intl Vancouver Intl

$625Air Canada

Sat, Nov 14 - Sat, Nov 21

9:09 am - 5:35 amSFO San Francisco-YXU London

17h 26m3 stops Los Angeles Phoenix Sky Harbor Intl Calgary

6:40 am - 8:19 amYXU London-SFO San Francisco

28h 39m3 stops Calgary Los Angeles Las Vegas Harry Reid Intl

$634Multiple Airlines

Thu, Nov 5 - Fri, Nov 13

Cheap last minute flights

Enter your travel dates to find the best prices.

6:00 am - 5:20 amSFO San Francisco-YXU London

20h 20m1 stop Calgary

6:10 am - 12:00 pmYXU London-SFO San Francisco

8h 50m1 stop Calgary

$1,206WestJet

Tue, Oct 20 - Thu, Oct 22

6:00 am - 5:20 amSFO San Francisco-YXU London

20h 20m1 stop Calgary

6:10 am - 12:00 pmYXU London-SFO San Francisco

8h 50m1 stop Calgary

$1,238WestJet

Tue, Oct 20 - Thu, Oct 22

6:00 am - 5:20 amSFO San Francisco-YXU London

20h 20m1 stop Calgary

6:10 am - 12:00 pmYXU London-SFO San Francisco

8h 50m1 stop Calgary

$1,307WestJet

Tue, Oct 20 - Thu, Oct 22

6:40 am - 7:40 pmSFO San Francisco-YXU London

10h 00m2 stops Vancouver Intl Toronto Pearson Intl

3:30 pm - 8:59 pmYXU London-SFO San Francisco

8h 29m1 stop Toronto Pearson Intl

$1,340Air Canada

Tue, Oct 20 - Thu, Oct 22

4:30 pm - 8:25 amSFO San Francisco-YXU London

12h 55m2 stops Vancouver Intl Toronto Pearson Intl

3:30 pm - 11:20 pmYXU London-SFO San Francisco

10h 50m2 stops Toronto Pearson Intl Vancouver Intl

$1,345Air Canada

Tue, Oct 20 - Thu, Oct 22

6:00 am - 5:20 amSFO San Francisco-YXU London

20h 20m1 stop Calgary

6:10 am - 12:00 pmYXU London-SFO San Francisco

8h 50m1 stop Calgary

$1,447WestJet

Tue, Oct 20 - Thu, Oct 22

6:00 am - 5:20 amSFO San Francisco-YXU London

20h 20m1 stop Calgary

6:10 am - 12:00 pmYXU London-SFO San Francisco

8h 50m1 stop Calgary

$1,463WestJet

Tue, Oct 20 - Thu, Oct 22

6:40 am - 7:40 pmSFO San Francisco-YXU London

10h 00m2 stops Vancouver Intl Toronto Pearson Intl

3:30 pm - 8:59 pmYXU London-SFO San Francisco

8h 29m1 stop Toronto Pearson Intl

$1,492Air Canada

Tue, Oct 20 - Thu, Oct 22

4:30 pm - 8:25 amSFO San Francisco-YXU London

12h 55m2 stops Vancouver Intl Toronto Pearson Intl

3:30 pm - 11:20 pmYXU London-SFO San Francisco

10h 50m2 stops Toronto Pearson Intl Vancouver Intl

$1,498Air Canada

Tue, Oct 20 - Thu, Oct 22

6:40 am - 7:40 pmSFO San Francisco-YXU London

10h 00m2 stops Vancouver Intl Toronto Pearson Intl

3:30 pm - 8:59 pmYXU London-SFO San Francisco

8h 29m1 stop Toronto Pearson Intl

$1,621Air Canada

Tue, Oct 20 - Thu, Oct 22

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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

Nov 5

SFO4:40 pmSan Francisco

9h 55m

1 stop

YXU5:35 amLondon

Nov 13

YXU6:40 amLondon

12h 10m

1 stop

SFO3:50 pmSan Francisco

$440

WestJet

Oct 20

SFO6:00 amSan Francisco

20h 20m

1 stop

YXU5:20 amLondon

Oct 22

YXU6:10 amLondon

8h 50m

1 stop

SFO12:00 pmSan Francisco

$1,206

WestJet

Oct 20

SFO6:00 amSan Francisco

20h 20m

1 stop

YXU5:20 amLondon

Oct 22

YXU6:10 amLondon

8h 50m

1 stop

SFO12:00 pmSan Francisco

$1,238

Air Canada flights from San Francisco to London, Ontario

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

Air Canada

Nov 14

SFO8:25 amSan Francisco

9h 02m

1 stop

YXU8:27 pmLondon

Nov 21

YXU9:05 pmLondon

17h 05m

1 stop

SFO11:10 amSan Francisco

$464

Air Canada

Nov 14

SFO8:25 amSan Francisco

9h 02m

1 stop

YXU8:27 pmLondon

Nov 21

YXU9:05 pmLondon

19h 46m

2 stops

SFO1:51 pmSan Francisco

$469

Air Canada

Nov 14

SFO8:25 amSan Francisco

9h 02m

1 stop

YXU8:27 pmLondon

Nov 21

YXU9:05 pmLondon

17h 05m

1 stop

SFO11:10 amSan Francisco

$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 San Francisco - YXU London

SFOYXU

San Francisco

Thu 11/5

4:40 pm-5:35 am

1 stop9h 55m

London

Fri 11/13

6:40 am-3:50 pm

1 stop12h 10m

$440

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Sat 11/14

8:25 am-8:27 pm

1 stop9h 02m

London

Sat 11/21

9:05 pm-11:10 am

1 stop17h 05m

$464

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Sat 11/14

8:25 am-8:27 pm

1 stop9h 02m

London

Sat 11/21

9:05 pm-1:51 pm

2 stops19h 46m

$469

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Thu 11/5

4:40 pm-5:35 am

1 stop9h 55m

London

Fri 11/13

6:40 am-8:19 am

2 stops28h 39m

$511

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Thu 11/5

4:40 pm-5:35 am

1 stop9h 55m

London

Fri 11/13

6:40 am-8:19 am

3 stops28h 39m

$512

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Fri 11/13

4:40 pm-8:37 am

1 stop12h 57m

London

Fri 11/20

3:25 pm-9:30 pm

1 stop9h 05m

$582

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Thu 11/5

9:09 am-5:35 am

2 stops17h 26m

London

Fri 11/13

6:40 am-8:19 am

3 stops28h 39m

$589

Quickest round-trip

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Fri 11/13

6:30 am-8:27 pm

2 stops10h 57m

London

Fri 11/20

9:15 am-3:40 pm

1 stop9h 25m

$596

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Sat 11/14

6:30 am-8:27 pm

2 stops10h 57m

London

Sat 11/21

9:05 pm-1:51 pm

2 stops19h 46m

$625

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Thu 11/5

9:09 am-5:35 am

3 stops17h 26m

London

Fri 11/13

6:40 am-8:19 am

3 stops28h 39m

$634

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 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

Prices

Airlines

Can stopping save me money on San Francisco to London, Ontario flights?

You could potentially save up to 77% on your flight if you consider stops on a San Francisco to London, Ontario flight.

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	$460
Fastest flight time	8h 10m
Direct flights	None

The best one-way flight to London, Ontario from San Francisco in the past 72 hours is $460. The best round-trip flight deal from San Francisco to London, Ontario found on momondo in the last 72 hours is $440.

The fastest flight from San Francisco to London, Ontario takes 8h 10m

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?
San Francisco and London are 2172.7 mi apart from one another. Typically, this will take 8h 10m by plane in normal conditions.
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 were last updated today.
How many operators does momondo search for flights from San Francisco Airport to London Airport?
As of October 2026, there are 2 operators available to choose from for flights from San Francisco Airport to London Airport.
How old do you have to be to fly from San Francisco Airport to London 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 San Francisco Airport to London Airport.
What documentation or ID do you need to fly to London Airport?
The necessary travel and health documents for your London Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from San Francisco to London, Ontario?
Based on momondo bookings for this flight route, the most popular airline on flight routes from San Francisco to London, Ontario is WestJet (77% of total bookings). The next most popular airline is Air Canada (23%).

Best airlines flying from San Francisco to London, Ontario

Compare and see reviews for airlines that fly from San Francisco to London, Ontario with momondo

Airline	Rating	Free Cancellation	Price
Air Canada	PriceFrom $357	Free Cancellation	Rating 7.1 11,773 reviews		Search Air Canada flights
WestJet	PriceFrom $366	Free Cancellation	Rating 7.2 3,447 reviews		Search WestJet flights

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Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from San Francisco to London. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. momondo enables you to select and highlight flights to London from San Francisco with this policy.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from San Francisco to London.

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

Yes momondo offers price alerts on flights to London from San Francisco. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your London, Ontario trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Cheap flights from San Francisco to London from $440

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from San Francisco to London departing on 11/5. 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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WestJet flights from San Francisco to London, Ontario

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

Air Canada flights from San Francisco to London, Ontario

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

momondo Fare Finder

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

See travel insights to London from

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

Can stopping save me money on San Francisco to London, Ontario flights?

What is the cheapest airline that flies from San Francisco to London?

What airlines fly to London, Ontario?

When to book flights from San Francisco to London, Ontario

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

Best Price Found

Fastest flight time

Direct flights

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

Best airlines flying from San Francisco to London, Ontario

Compare and see reviews for airlines that fly from San Francisco to London, Ontario with momondo

Traveling to a place near London?

Why use momondo?

An easier way to manage your London, Ontario trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Canada

Airports servicing Ontario

Fly your favorite airline to London

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to London

List of cabin classes available on flights landing in London. Availability may vary depending on flight origin and airline.

Popular cities in Canada

Popular flights according to clicks in the last 7 days on momondo

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According to popular flight searches on momondo this year

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