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 39% 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.

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 November 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.

$481 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.

6:30 am - 9:52 pmSFO San Francisco-YXU London

12h 22m2 stops Vancouver Intl Toronto Pearson Intl

3:20 pm - 9:20 pmYXU London-SFO San Francisco

9h 00m1 stop Toronto Pearson Intl

$481Air Canada

Mon, Jan 18 - Thu, Jan 21

6:30 am - 9:52 pmSFO San Francisco-YXU London

12h 22m2 stops Vancouver Intl Toronto Pearson Intl

5:30 am - 1:51 pmYXU London-SFO San Francisco

11h 21m2 stops Toronto Pearson Intl Vancouver Intl

$486Air Canada

Mon, Jan 18 - Thu, Jan 21

12:00 pm - 8:37 amSFO San Francisco-YXU London

17h 37m1 stop Toronto Pearson Intl

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

9h 25m1 stop Toronto Pearson Intl

$499Air Canada

Mon, Jan 18 - Thu, Jan 21

5:15 pm - 2:42 pmSFO San Francisco-YXU London

18h 27m2 stops Vancouver Intl Toronto Pearson Intl

5:30 am - 11:05 amYXU London-SFO San Francisco

8h 35m1 stop Toronto Pearson Intl

$499Air Canada

Mon, Jan 18 - Thu, Jan 21

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

$539WestJet

Mon, Jan 18 - Thu, Jan 21

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

9h 55m1 stop Calgary

6:15 am - 10:13 pmYXU London-SFO San Francisco

42h 58m2 stops Fort Lauderdale Dallas/Fort Worth

$615Multiple Airlines

Sun, Dec 13 - Wed, Dec 30

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

9h 55m1 stop Calgary

6:15 am - 10:13 pmYXU London-SFO San Francisco

42h 58m2 stops Fort Lauderdale Dallas/Fort Worth

$666Multiple Airlines

Mon, Dec 14 - Wed, Dec 30

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

9h 55m1 stop Calgary

8:20 am - 4:44 pmYXU London-SFO San Francisco

35h 24m2 stops Orlando Phoenix Sky Harbor Intl

$684Multiple Airlines

Sun, Dec 13 - Tue, Dec 29

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

$839WestJet

Sun, Dec 13 - Mon, Dec 28

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

$887WestJet

Mon, Dec 14 - Mon, Dec 28

Cheap last minute flights

Enter your travel dates to find the best prices.

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

$1,110Air Canada

Thu, Nov 5 - Sun, Nov 15

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

$1,173WestJet

Fri, Nov 6 - Mon, Nov 16

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

9h 55m1 stop Calgary

6:40 am - 4:02 pmYXU London-SFO San Francisco

36h 22m2 stops Calgary Phoenix Sky Harbor Intl

$1,179Multiple Airlines

Fri, Nov 6 - Mon, Nov 16

12:55 am - 2:42 pmSFO San Francisco-YXU London

10h 47m2 stops Chicago O'Hare Intl Toronto Pearson Intl

9:05 pm - 9:29 amYXU London-SFO San Francisco

15h 24m1 stop Toronto Pearson Intl

$1,200Air Canada

Thu, Nov 5 - Sun, Nov 15

12:55 am - 8:27 pmSFO San Francisco-YXU London

16h 32m2 stops Chicago O'Hare Intl Toronto Pearson Intl

9:05 pm - 9:29 amYXU London-SFO San Francisco

15h 24m1 stop Toronto Pearson Intl

$1,200Air Canada

Wed, Nov 4 - Sun, Nov 15

12:00 pm - 8:37 amSFO San Francisco-YXU London

17h 37m1 stop Toronto Pearson Intl

9:05 pm - 9:29 amYXU London-SFO San Francisco

15h 24m1 stop Toronto Pearson Intl

$1,215Air Canada

Fri, Nov 6 - Sun, Nov 15

12:45 am - 8:27 pmSFO San Francisco-YXU London

16h 42m2 stops Houston George Bush Intcntl Toronto Pearson Intl

9:05 pm - 2:42 pmYXU London-SFO San Francisco

20h 37m2 stops Toronto Pearson Intl Chicago O'Hare Intl

$1,260United Airlines

Thu, Nov 5 - Mon, Nov 16

12:55 am - 2:42 pmSFO San Francisco-YXU London

10h 47m2 stops Chicago O'Hare Intl Toronto Pearson Intl

9:05 pm - 1:30 pmYXU London-SFO San Francisco

19h 25m2 stops Toronto Pearson Intl Chicago O'Hare Intl

$1,264Air Canada

Wed, Nov 4 - Sun, Nov 15

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

9h 02m1 stop Toronto Pearson Intl

3:25 pm - 9:19 amYXU London-SFO San Francisco

20h 54m2 stops Toronto Pearson Intl Washington, D.C. Dulles Intl

$1,436United Airlines

Thu, Nov 5 - Sun, Nov 15

5:00 am - 8:27 pmSFO San Francisco-YXU London

12h 27m2 stops Chicago O'Hare Intl Toronto Pearson Intl

3:25 pm - 9:19 amYXU London-SFO San Francisco

20h 54m2 stops Toronto Pearson Intl Washington, D.C. Dulles Intl

$1,446United Airlines

Thu, Nov 5 - Sun, Nov 15

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Air Canada flights from San Francisco to London, Ontario

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

Air Canada

Jan 18

SFO6:30 amSan Francisco

12h 22m

2 stops

YXU9:52 pmLondon

Jan 21

YXU3:20 pmLondon

9h 00m

1 stop

SFO9:20 pmSan Francisco

$481

Air Canada

Jan 18

SFO6:30 amSan Francisco

12h 22m

2 stops

YXU9:52 pmLondon

Jan 21

YXU5:30 amLondon

11h 21m

2 stops

SFO1:51 pmSan Francisco

$486

Air Canada

Jan 18

SFO5:15 pmSan Francisco

18h 27m

2 stops

YXU2:42 pmLondon

Jan 21

YXU5:30 amLondon

8h 35m

1 stop

SFO11:05 amSan Francisco

$499

United Airlines flights from San Francisco to London, Ontario

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

United Airlines

Nov 11

SFO12:55 amSan Francisco

10h 47m

2 stops

YXU2:42 pmLondon

Nov 22

YXU3:25 pmLondon

20h 54m

2 stops

SFO9:19 amSan Francisco

$722

United Airlines

Dec 16

SFO6:53 pmSan Francisco

16h 49m

2 stops

YXU2:42 pmLondon

Dec 23

YXU9:15 amLondon

13h 21m

2 stops

SFO7:36 pmSan Francisco

$726

United Airlines

Nov 5

SFO12:45 amSan Francisco

16h 42m

2 stops

YXU8:27 pmLondon

Nov 16

YXU9:05 pmLondon

20h 37m

2 stops

SFO2:42 pmSan Francisco

$1,260

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 San Francisco - YXU London

SFOYXU

San Francisco

Mon 1/18

6:30 am-9:52 pm

2 stops12h 22m

London

Thu 1/21

3:20 pm-9:20 pm

1 stop9h 00m

$481

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Mon 1/18

6:30 am-9:52 pm

2 stops12h 22m

London

Thu 1/21

5:30 am-1:51 pm

2 stops11h 21m

$486

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Mon 1/18

12:00 pm-8:37 am

1 stop17h 37m

London

Thu 1/21

9:15 am-3:40 pm

1 stop9h 25m

$499

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Mon 1/18

5:15 pm-2:42 pm

2 stops18h 27m

London

Thu 1/21

5:30 am-11:05 am

1 stop8h 35m

$499

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Mon 1/18

4:40 pm-5:35 am

1 stop9h 55m

London

Thu 1/21

6:40 am-3:50 pm

1 stop12h 10m

$539

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Sun 12/13

4:40 pm-5:35 am

1 stop9h 55m

London

Wed 12/30

6:15 am-10:13 pm

2 stops42h 58m

$615

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Mon 12/14

4:40 pm-5:35 am

1 stop9h 55m

London

Wed 12/30

6:15 am-10:13 pm

2 stops42h 58m

$666

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Sun 12/13

4:40 pm-5:35 am

1 stop9h 55m

London

Tue 12/29

8:20 am-4:44 pm

2 stops35h 24m

$684

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Sun 12/13

4:40 pm-5:35 am

1 stop9h 55m

London

Mon 12/28

6:40 am-3:50 pm

1 stop12h 10m

$839

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Mon 12/14

4:40 pm-5:35 am

1 stop9h 55m

London

Mon 12/28

6:40 am-3:50 pm

1 stop12h 10m

$887

Flights are sorted by cheapest round-trip flights first.

Sorted 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 16% 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	$481
Fastest flight time	8h 42m
Direct flights	None

The best flight deal from San Francisco to London, Ontario found on momondo in the last 72 hours is $481

The fastest flight from San Francisco to London, Ontario takes 8h 42m

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 42m 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 November 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 11,840 reviews		Search Air Canada flights
WestJet	PriceFrom $366	Free Cancellation	Rating 7.2 3,443 reviews		Search WestJet flights

Grand Bend

Port Stanley

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.

Start using Trips

Find my bookings

Get notified when prices go down

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

1 adult

Tue 12/1

Tue 12/8

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Canada

Nearby airports

Airlines

Cabin classes

Other Canada destinations

Other flights from San Francisco

Complete your trip

Feeling lucky

Cheap flights from San Francisco to London from $481

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 1/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from San Francisco to London

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Air Canada flights from San Francisco to London, Ontario

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

United Airlines flights from San Francisco to London, Ontario

Our best United Airlines 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 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

Fly to other destinations from San Francisco

According to popular flight searches on momondo this year

Complete your trip to London

Explore popular destinations other users love

According to popular flight searches on momondo this year