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.

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.

$385 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

Cheap round-trip flights

Enter your travel dates to find the best prices.

4:40 pm - 8:29 amSFO San Francisco-YXU London

12h 49m1 stop Toronto Pearson Intl

5:30 am - 1:47 pmYXU London-SFO San Francisco

11h 17m2 stops Toronto Pearson Intl Vancouver Intl

$385Air Canada

Thu, Apr 22 - Sat, Apr 24

2:00 pm - 8:29 amSFO San Francisco-YXU London

15h 29m1 stop Toronto Pearson Intl

3:20 pm - 9:10 pmYXU London-SFO San Francisco

8h 50m1 stop Toronto Pearson Intl

$385Air Canada

Thu, Apr 22 - Sat, Apr 24

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

$474Air 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

$480Air Canada

Sat, Nov 14 - Sat, Nov 21

10:35 pm - 2:39 pmSFO San Francisco-YXU London

13h 04m2 stops Chicago O'Hare Intl Toronto Pearson Intl

5:30 am - 1:47 pmYXU London-SFO San Francisco

11h 17m2 stops Toronto Pearson Intl Vancouver Intl

$550Multiple Airlines

Thu, Apr 22 - Sat, Apr 24

5:00 am - 9:52 pmSFO San Francisco-YXU London

13h 52m2 stops Denver Intl Toronto Pearson Intl

5:30 am - 5:44 pmYXU London-SFO San Francisco

15h 14m2 stops Toronto Pearson Intl Denver Intl

$849United Airlines

Thu, Dec 24 - Fri, Dec 25

9:30 pm - 2:42 pmSFO San Francisco-YXU London

14h 12m2 stops Newark Toronto Pearson Intl

5:30 am - 11:10 amYXU London-SFO San Francisco

8h 40m1 stop Toronto Pearson Intl

$881United Airlines

Thu, Dec 24 - Thu, Dec 31

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

$936WestJet

Thu, Dec 24 - Thu, Dec 31

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

$1,132WestJet

Mon, Dec 21 - 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

$1,320WestJet

Sun, Dec 20 - Mon, Dec 28

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

United Airlines flights from San Francisco to London, Ontario

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

United Airlines

Dec 24

SFO5:00 amSan Francisco

13h 52m

2 stops

YXU9:52 pmLondon

Dec 25

YXU5:30 amLondon

15h 14m

2 stops

SFO5:44 pmSan Francisco

$849

United Airlines

Dec 24

SFO10:34 pmSan Francisco

20h 18m

2 stops

YXU9:52 pmLondon

Dec 30

YXU5:30 amLondon

8h 40m

1 stop

SFO11:10 amSan Francisco

$881

United Airlines

Dec 18

SFO5:00 amSan Francisco

13h 52m

2 stops

YXU9:52 pmLondon

Dec 25

YXU3:20 pmLondon

10h 45m

2 stops

SFO11:05 pmSan Francisco

$897

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

$474

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

$480

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

$555

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 4/22

4:40 pm-8:29 am

1 stop12h 49m

London

Sat 4/24

5:30 am-1:47 pm

2 stops11h 17m

$385

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Thu 4/22

2:00 pm-8:29 am

1 stop15h 29m

London

Sat 4/24

3:20 pm-9:10 pm

1 stop8h 50m

$385

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

$474

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

$480

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Thu 4/22

10:35 pm-2:39 pm

2 stops13h 04m

London

Sat 4/24

5:30 am-1:47 pm

2 stops11h 17m

$550

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Thu 12/24

5:00 am-9:52 pm

2 stops13h 52m

London

Fri 12/25

5:30 am-5:44 pm

2 stops15h 14m

$849

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Thu 12/24

9:30 pm-2:42 pm

2 stops14h 12m

London

Thu 12/31

5:30 am-11:10 am

1 stop8h 40m

$881

Quickest round-trip

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Thu 12/24

4:40 pm-5:35 am

1 stop9h 55m

London

Thu 12/31

6:40 am-3:50 pm

1 stop12h 10m

$936

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Mon 12/21

4:40 pm-5:35 am

1 stop9h 55m

London

Mon 12/28

6:40 am-3:50 pm

1 stop12h 10m

$1,132

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Sun 12/20

4:40 pm-5:35 am

1 stop9h 55m

London

Mon 12/28

6:40 am-3:50 pm

1 stop12h 10m

$1,320

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	$504
Fastest flight time	9h 02m
Direct flights	None

The best one-way flight to London, Ontario from San Francisco in the past 72 hours is $504. The best round-trip flight deal from San Francisco to London, Ontario found on momondo in the last 72 hours is $385.

The fastest flight from San Francisco to London, Ontario takes 9h 02m

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 9h 02m 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 11,795 reviews		Search Air Canada flights
WestJet	PriceFrom $366	Free Cancellation	Rating 7.2 3,446 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

Sun 11/22

Sun 11/29

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 $385

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 4/22. 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

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

United Airlines flights from San Francisco to London, Ontario

Our best United Airlines 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 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