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 36% 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 August 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.

$207 Cheap Flights from San Francisco to London, Ontario in 2026

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.

6:00 am - 4:45 pmSFO San Francisco-YXU London

7h 45m1 stop Calgary

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

8h 50m1 stop Calgary

$450WestJet

Thu, Oct 1 - Mon, Oct 5

1:10 pm - 5:20 amSFO San Francisco-YXU London

13h 10m2 stops Phoenix Sky Harbor Intl Calgary

6:10 am - 9:55 pmYXU London-SFO San Francisco

18h 45m1 stop Calgary

$474Multiple Airlines

Fri, Sep 25 - Fri, Oct 2

6:00 am - 4:45 pmSFO San Francisco-YXU London

7h 45m1 stop Calgary

6:10 am - 9:55 pmYXU London-SFO San Francisco

18h 45m1 stop Calgary

$479WestJet

Fri, Sep 25 - Fri, Oct 2

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

$489WestJet

Thu, Sep 10 - Fri, Sep 18

1:10 pm - 5:20 amSFO San Francisco-YXU London

37h 10m2 stops Phoenix Sky Harbor Intl Calgary

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

8h 50m1 stop Calgary

$523Multiple Airlines

Thu, Sep 10 - Fri, Sep 18

10:45 pm - 9:20 amSFO San Francisco-YXU London

7h 35m1 stop Toronto Pearson Intl

3:30 pm - 9:49 pmYXU London-SFO San Francisco

9h 19m1 stop Toronto Pearson Intl

$574Air Canada

Mon, Sep 21 - Fri, Sep 25

8:10 am - 9:40 pmSFO San Francisco-YXU London

10h 30m2 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl

10:05 am - 3:24 pmYXU London-SFO San Francisco

8h 19m1 stop Toronto Pearson Intl

$583Air Canada

Mon, Sep 21 - Fri, Sep 25

6:00 am - 4:45 pmSFO San Francisco-YXU London

7h 45m1 stop Calgary

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

14h 50m3 stops Calgary Victoria Intl Vancouver Intl

$586Multiple Airlines

Fri, Sep 25 - Fri, Oct 2

1:00 pm - 4:45 pmSFO San Francisco-YXU London

24h 45m1 stop Calgary

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

8h 50m1 stop Calgary

$588WestJet

Wed, Sep 23 - Wed, Sep 30

11:39 pm - 2:50 pmSFO San Francisco-YXU London

12h 11m2 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl

3:30 pm - 12:30 amYXU London-SFO San Francisco

12h 00m2 stops Toronto Pearson Intl Chicago O'Hare Intl

$727Air Canada

Mon, Sep 21 - Fri, Sep 25

Cheap last minute flights

Enter your travel dates to find the best prices.

10:51 pm - 9:20 amSFO San Francisco-YXU London

7h 29m1 stop Toronto Pearson Intl

5:40 am - 10:45 amYXU London-SFO San Francisco

8h 05m1 stop Toronto Pearson Intl

$1,366Air Canada

Tue, Aug 18 - Fri, Aug 21

5:00 am - 5:42 pmSFO San Francisco-YXU London

9h 42m2 stops Denver Intl Toronto Pearson Intl

5:40 am - 10:45 amYXU London-SFO San Francisco

8h 05m1 stop Toronto Pearson Intl

$1,376Air Canada

Tue, Aug 18 - Fri, Aug 21

11:40 am - 9:40 pmSFO San Francisco-YXU London

7h 00m1 stop Toronto Pearson Intl

10:05 am - 3:27 pmYXU London-SFO San Francisco

8h 22m1 stop Toronto Pearson Intl

$1,545United Airlines

Sun, Aug 16 - Sat, Aug 22

11:40 am - 9:40 pmSFO San Francisco-YXU London

7h 00m1 stop Toronto Pearson Intl

5:40 am - 10:45 amYXU London-SFO San Francisco

8h 05m1 stop Toronto Pearson Intl

$1,545United Airlines

Sat, Aug 15 - Sat, Aug 22

11:40 am - 9:40 pmSFO San Francisco-YXU London

7h 00m1 stop Toronto Pearson Intl

10:05 am - 3:27 pmYXU London-SFO San Francisco

8h 22m1 stop Toronto Pearson Intl

$1,545Air Canada

Mon, Aug 17 - Sat, Aug 22

10:51 pm - 9:20 amSFO San Francisco-YXU London

7h 29m1 stop Toronto Pearson Intl

5:40 am - 10:45 amYXU London-SFO San Francisco

8h 05m1 stop Toronto Pearson Intl

$1,545United Airlines

Tue, Aug 18 - Mon, Aug 24

11:40 am - 9:40 pmSFO San Francisco-YXU London

7h 00m1 stop Toronto Pearson Intl

5:40 am - 10:45 amYXU London-SFO San Francisco

8h 05m1 stop Toronto Pearson Intl

$1,545Air Canada

Sun, Aug 16 - Mon, Aug 24

6:05 pm - 5:20 amSFO San Francisco-YXU London

8h 15m1 stop Calgary

8:40 pm - 12:00 pmYXU London-SFO San Francisco

18h 20m1 stop Calgary

$1,627WestJet

Mon, Aug 17 - Thu, Aug 20

6:05 pm - 5:20 amSFO San Francisco-YXU London

8h 15m1 stop Calgary

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

8h 50m1 stop Calgary

$1,627WestJet

Mon, Aug 17 - Wed, Aug 19

6:00 am - 4:45 pmSFO San Francisco-YXU London

7h 45m1 stop Calgary

8:40 pm - 4:40 pmYXU London-SFO San Francisco

23h 00m1 stop Calgary

$1,627WestJet

Tue, Aug 18 - Thu, Aug 20

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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

Sep 21

SFO10:45 pmSan Francisco

7h 35m

1 stop

YXU9:20 amLondon

Sep 25

YXU3:30 pmLondon

9h 19m

1 stop

SFO9:49 pmSan Francisco

$574

Air Canada

Sep 21

SFO8:10 amSan Francisco

10h 30m

2 stops

YXU9:40 pmLondon

Sep 25

YXU10:05 amLondon

8h 19m

1 stop

SFO3:24 pmSan Francisco

$583

Air Canada

Sep 21

SFO11:39 pmSan Francisco

12h 11m

2 stops

YXU2:50 pmLondon

Sep 25

YXU3:30 pmLondon

12h 00m

2 stops

SFO12:30 amSan Francisco

$727

United Airlines flights from San Francisco to London, Ontario

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

United Airlines

Sep 23

SFO6:30 pmSan Francisco

17h 20m

2 stops

YXU2:50 pmLondon

Sep 30

YXU3:30 pmLondon

8h 29m

1 stop

SFO8:59 pmSan Francisco

$713

United Airlines

Sep 23

SFO9:30 pmSan Francisco

14h 20m

2 stops

YXU2:50 pmLondon

Sep 30

YXU3:30 pmLondon

10h 21m

2 stops

SFO10:51 pmSan Francisco

$728

United Airlines

Oct 1

SFO6:30 pmSan Francisco

17h 25m

2 stops

YXU2:55 pmLondon

Oct 5

YXU3:30 pmLondon

10h 21m

2 stops

SFO10:51 pmSan Francisco

$739

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

Thu 10/1

6:00 am-4:45 pm

1 stop7h 45m

London

Mon 10/5

6:10 am-12:00 pm

1 stop8h 50m

$450

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Fri 9/25

1:10 pm-5:20 am

2 stops13h 10m

London

Fri 10/2

6:10 am-9:55 pm

1 stop18h 45m

$474

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Fri 9/25

6:00 am-4:45 pm

1 stop7h 45m

London

Fri 10/2

6:10 am-9:55 pm

1 stop18h 45m

$479

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Thu 9/10

6:00 am-5:20 am

1 stop20h 20m

London

Fri 9/18

6:10 am-12:00 pm

1 stop8h 50m

$489

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Thu 9/10

1:10 pm-5:20 am

2 stops37h 10m

London

Fri 9/18

6:10 am-12:00 pm

1 stop8h 50m

$523

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Mon 9/21

10:45 pm-9:20 am

1 stop7h 35m

London

Fri 9/25

3:30 pm-9:49 pm

1 stop9h 19m

$574

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Mon 9/21

8:10 am-9:40 pm

2 stops10h 30m

London

Fri 9/25

10:05 am-3:24 pm

1 stop8h 19m

$583

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Fri 9/25

6:00 am-4:45 pm

1 stop7h 45m

London

Fri 10/2

6:10 am-6:00 pm

3 stops14h 50m

$586

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Wed 9/23

1:00 pm-4:45 pm

1 stop24h 45m

London

Wed 9/30

6:10 am-12:00 pm

1 stop8h 50m

$588

San FranciscoLondon

SFO San Francisco - YXU London

SFOYXU

San Francisco

Mon 9/21

11:39 pm-2:50 pm

2 stops12h 11m

London

Fri 9/25

3:30 pm-12:30 am

2 stops12h 00m

$727

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 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 4% 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

Fastest flight time	7h 29m
Direct flights	None

The fastest flight from San Francisco to London, Ontario takes 7h 29m

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 7h 29m 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 August 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 (78% of total bookings). The next most popular airline is Air Canada (22%).

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 $358	Free Cancellation	Rating 7.1 11,466 reviews		Search Air Canada flights
WestJet	PriceFrom $366	Free Cancellation	Rating 7.2 3,433 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 $218

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Francisco to London departing on 10/10. 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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Filter for what you want

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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

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 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

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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