Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from San Francisco to London from $162

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 4/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

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

Trusted and free

Trusted and free

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

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from San Francisco to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
8:30 am - 9:18 pm
SFO
-
YXU
9h 48m
1 stop
Air Canada Logo
5:10 am - 10:45 am
YXU
-
SFO
8h 35m
1 stop
$401Air Canada
Sat, Apr 11 - Wed, Apr 15
Air Canada Logo
7:25 am - 9:18 pm
SFO
-
YXU
10h 53m
2 stops
Air Canada Logo
5:10 am - 10:45 am
YXU
-
SFO
8h 35m
1 stop
$406Air Canada
Sat, Apr 11 - Wed, Apr 15
Air Canada Logo
7:25 am - 9:18 pm
SFO
-
YXU
10h 53m
2 stops
Air Canada Logo
5:10 am - 12:32 pm
YXU
-
SFO
10h 22m
2 stops
$411Air Canada
Sat, Apr 11 - Wed, Apr 15
Air Canada Logo
7:25 am - 9:18 pm
SFO
-
YXU
10h 53m
2 stops
Air Canada Logo
5:10 am - 3:32 pm
YXU
-
SFO
13h 22m
2 stops
$412Air Canada
Sat, Apr 11 - Wed, Apr 15
Air Canada Logo
8:30 am - 9:18 pm
SFO
-
YXU
9h 48m
1 stop
Air Canada Logo
6:00 am - 10:50 am
YXU
-
SFO
7h 50m
1 stop
$428Air Canada
Wed, Apr 29 - Sun, May 3
Air Canada Logo
6:00 pm - 8:43 am
SFO
-
YXU
11h 43m
2 stops
Air Canada Logo
6:00 am - 10:50 am
YXU
-
SFO
7h 50m
1 stop
$433Air Canada
Wed, Apr 29 - Sun, May 3
Air Canada Logo
4:15 pm - 8:46 am
SFO
-
YXU
13h 31m
1 stop
Air Canada Logo
5:10 am - 10:54 am
YXU
-
SFO
8h 44m
1 stop
$435Air Canada
Fri, Mar 6 - Fri, Mar 13
Air Canada Logo
7:30 am - 9:21 pm
SFO
-
YXU
10h 51m
2 stops
Air Canada Logo
5:10 am - 10:54 am
YXU
-
SFO
8h 44m
1 stop
$533Air Canada
Fri, Mar 6 - Fri, Mar 13
United Airlines Logo
8:53 am - 9:21 pm
SFO
-
YXU
9h 28m
1 stop
United Airlines Logo
5:10 am - 10:54 am
YXU
-
SFO
8h 44m
1 stop
$540United Airlines
Fri, Mar 6 - Fri, Mar 13
United Airlines Logo
10:45 pm - 5:05 pm
SFO
-
YXU
15h 20m
2 stops
United Airlines Logo
5:10 am - 10:54 am
YXU
-
SFO
8h 44m
1 stop
$549United Airlines
Fri, Mar 6 - Fri, Mar 13

Air Canada flights from San Francisco to London, Ontario

Our best Air Canada deals on San Francisco to London, Ontario flight tickets
Air Canada
Apr 11
SFO8:30 amSan Francisco
9h 48m
1 stop
YXU9:18 pmLondon
Apr 15
YXU5:10 amLondon
8h 35m
1 stop
SFO10:45 amSan Francisco
$401
Air Canada
Apr 11
SFO8:30 amSan Francisco
9h 48m
1 stop
YXU9:18 pmLondon
Apr 15
YXU5:10 amLondon
13h 22m
2 stops
SFO3:32 pmSan Francisco
$406
Air Canada
Apr 11
SFO7:25 amSan Francisco
10h 53m
2 stops
YXU9:18 pmLondon
Apr 15
YXU5:10 amLondon
10h 22m
2 stops
SFO12:32 pmSan Francisco
$411

United Airlines flights from San Francisco to London, Ontario

Our best United Airlines deals on San Francisco to London, Ontario flight tickets
United Airlines
Mar 6
SFO8:53 amSan Francisco
9h 28m
1 stop
YXU9:21 pmLondon
Mar 13
YXU5:10 amLondon
8h 44m
1 stop
SFO10:54 amSan Francisco
$540
United Airlines
Mar 6
SFO10:45 pmSan Francisco
15h 20m
2 stops
YXU5:05 pmLondon
Mar 13
YXU5:10 amLondon
8h 44m
1 stop
SFO10:54 amSan Francisco
$549
United Airlines
Mar 18
SFO5:05 amSan Francisco
13h 16m
2 stops
YXU9:21 pmLondon
Mar 22
YXU9:25 amLondon
19h 03m
2 stops
SFO1:28 amSan Francisco
$578

momondo Fare Finder

 
Customize your flight search to find flights from San Francisco to London, Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated January 22, 2026.
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

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Sat 4/11

8:30 am-9:18 pm

1 stop9h 48m

London

Wed 4/15

5:10 am-10:45 am

1 stop8h 35m

$401

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Sat 4/11

7:25 am-9:18 pm

2 stops10h 53m

London

Wed 4/15

5:10 am-10:45 am

1 stop8h 35m

$406

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Sat 4/11

7:25 am-9:18 pm

2 stops10h 53m

London

Wed 4/15

5:10 am-12:32 pm

2 stops10h 22m

$411

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Sat 4/11

7:25 am-9:18 pm

2 stops10h 53m

London

Wed 4/15

5:10 am-3:32 pm

2 stops13h 22m

$412

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Wed 4/29

8:30 am-9:18 pm

1 stop9h 48m

London

Sun 5/3

6:00 am-10:50 am

1 stop7h 50m

$428

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Wed 4/29

6:00 pm-8:43 am

2 stops11h 43m

London

Sun 5/3

6:00 am-10:50 am

1 stop7h 50m

$433

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Fri 3/6

4:15 pm-8:46 am

1 stop13h 31m

London

Fri 3/13

5:10 am-10:54 am

1 stop8h 44m

$435

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Fri 3/6

7:30 am-9:21 pm

2 stops10h 51m

London

Fri 3/13

5:10 am-10:54 am

1 stop8h 44m

$533

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Fri 3/6

8:53 am-9:21 pm

1 stop9h 28m

London

Fri 3/13

5:10 am-10:54 am

1 stop8h 44m

$540

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Fri 3/6

10:45 pm-5:05 pm

2 stops15h 20m

London

Fri 3/13

5:10 am-10:54 am

1 stop8h 44m

$549

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
1
2

See travel insights to London from

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

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

You could potentially save up to 41% 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

9h 28m

Direct flights

None
The fastest flight from San Francisco to London, Ontario takes 9h 28m
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

  • How far is San Francisco to London by plane?

    San Francisco and London are 2173.0 mi apart from one another. Typically, this will take 9h 28m 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?

  • 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?

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 CanadaPriceFrom $145Free CancellationRating
7.1
10,648 reviews
Search Air Canada flights
WestJetPriceFrom $162Free CancellationRating
7.2
3,248 reviews
Search WestJet flights
United AirlinesPriceFrom $192Free CancellationRating
7.4
9,192 reviews
Search United Airlines flights

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
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
Sat 2/21
Sat 2/28
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Canada