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Cheap flights from London, Ontario to San Francisco from $159

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London, Ontario to San Francisco departing on 8/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from London, Ontario to San Francisco

Cheap round-trip flights

WestJet Logo
6:00 am - 11:54 amYXU-SFO
8h 54m1 stop
WestJet Logo
7:30 am - 7:07 pmSFO-YXU
8h 37m1 stop
$286WestJet
Find Deal
Wed, Sep 10 - Tue, Sep 23
Logo
6:00 am - 11:54 amYXU-SFO
8h 54m1 stop
Logo
10:15 am - 5:12 amSFO-YXU
15h 57m3 stops
$303
Find Deal
Wed, Sep 10 - Tue, Sep 23
Air Canada Logo
3:50 pm - 8:53 pmYXU-SFO
8h 03m1 stop
Air Canada Logo
4:35 pm - 9:19 amSFO-YXU
13h 44m2 stops
$304Air Canada
Find Deal
Wed, Sep 10 - Tue, Sep 23
WestJet Logo
6:00 am - 11:56 amYXU-SFO
8h 56m1 stop
WestJet Logo
2:45 pm - 5:12 amSFO-YXU
11h 27m2 stops
$305WestJet
Find Deal
Thu, Aug 28 - Sat, Sep 6
WestJet Logo
6:00 am - 11:56 amYXU-SFO
8h 56m1 stop
WestJet Logo
7:30 am - 7:07 pmSFO-YXU
8h 37m1 stop
$308WestJet
Find Deal
Thu, Aug 28 - Sat, Sep 6
Air Canada Logo
6:10 am - 3:28 pmYXU-SFO
12h 18m2 stops
Air Canada Logo
4:35 pm - 9:19 amSFO-YXU
13h 44m2 stops
$309Air Canada
Find Deal
Wed, Sep 10 - Tue, Sep 23
United Airlines Logo
5:45 am - 9:05 pmYXU-SFO
18h 20m2 stops
United Airlines Logo
10:40 pm - 9:21 pmSFO-YXU
19h 41m2 stops
$524United Airlines
Find Deal
Thu, Dec 4 - Wed, Mar 4
United Airlines Logo
9:25 am - 3:15 pmYXU-SFO
8h 50m1 stop
United Airlines Logo
12:32 am - 5:06 pmSFO-YXU
13h 34m2 stops
$540United Airlines
Find Deal
Thu, Dec 4 - Tue, Mar 3
Delta Logo
6:00 am - 11:56 amYXU-SFO
8h 56m1 stop
Delta Logo
7:30 am - 7:07 pmSFO-YXU
8h 37m1 stop
$1,034Delta
Find Deal
Fri, Aug 29 - Fri, Sep 5
Delta Logo
6:00 am - 3:55 pmYXU-SFO
12h 55m2 stops
Delta Logo
6:05 pm - 5:12 amSFO-YXU
8h 07m1 stop
$1,286Delta
Find Deal
Fri, Aug 29 - Fri, Sep 5

WestJet flights from London, Ontario to San Francisco

Our best WestJet deals on London, Ontario to San Francisco flight tickets
WestJet
Sep 10
YXU6:00 amLondon
8h 54m
1 stop
SFO11:54 amSan Francisco
Sep 23
SFO7:30 amSan Francisco
8h 37m
1 stop
YXU7:07 pmLondon
$286
Find similar
WestJet
Aug 28
YXU6:00 amLondon
8h 56m
1 stop
SFO11:56 amSan Francisco
Sep 6
SFO2:45 pmSan Francisco
11h 27m
2 stops
YXU5:12 amLondon
$305
Find similar
WestJet
Aug 28
YXU6:00 amLondon
8h 56m
1 stop
SFO11:56 amSan Francisco
Sep 6
SFO7:30 amSan Francisco
8h 37m
1 stop
YXU7:07 pmLondon
$308
Find similar

Air Canada flights from London, Ontario to San Francisco

Our best Air Canada deals on London, Ontario to San Francisco flight tickets
Air Canada
Sep 10
YXU3:50 pmLondon
8h 03m
1 stop
SFO8:53 pmSan Francisco
Sep 23
SFO4:35 pmSan Francisco
13h 44m
2 stops
YXU9:19 amLondon
$304
Find similar
Air Canada
Sep 10
YXU6:10 amLondon
12h 18m
2 stops
SFO3:28 pmSan Francisco
Sep 23
SFO4:35 pmSan Francisco
13h 44m
2 stops
YXU9:19 amLondon
$309
Find similar
Air Canada
Sep 10
YXU3:50 pmLondon
8h 03m
1 stop
SFO8:53 pmSan Francisco
Sep 23
SFO7:25 amSan Francisco
11h 04m
1 stop
YXU9:29 pmLondon
$323
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from London, Ontario to San Francisco 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 July 31, 2025.
Use the filters below to find and compare flights from London, Ontario to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonSan Francisco

YXU - SFO

YXUSFO

London

Wed 9/10

6:00 am-11:54 am

1 stop8h 54m

San Francisco

Tue 9/23

7:30 am-7:07 pm

1 stop8h 37m

$286

LondonSan Francisco

YXU - SFO

YXUSFO

London

Wed 9/10

6:00 am-11:54 am

1 stop8h 54m

San Francisco

Tue 9/23

10:15 am-5:12 am

3 stops15h 57m

$303

LondonSan Francisco

YXU - SFO

YXUSFO

London

Wed 9/10

3:50 pm-8:53 pm

1 stop8h 03m

San Francisco

Tue 9/23

4:35 pm-9:19 am

2 stops13h 44m

$304

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 8/28

6:00 am-11:56 am

1 stop8h 56m

San Francisco

Sat 9/6

2:45 pm-5:12 am

2 stops11h 27m

$305

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 8/28

6:00 am-11:56 am

1 stop8h 56m

San Francisco

Sat 9/6

7:30 am-7:07 pm

1 stop8h 37m

$308

LondonSan Francisco

YXU - SFO

YXUSFO

London

Wed 9/10

6:10 am-3:28 pm

2 stops12h 18m

San Francisco

Tue 9/23

4:35 pm-9:19 am

2 stops13h 44m

$309

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 12/4

5:45 am-9:05 pm

2 stops18h 20m

San Francisco

Wed 3/4

10:40 pm-9:21 pm

2 stops19h 41m

$524

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 12/4

9:25 am-3:15 pm

1 stop8h 50m

San Francisco

Tue 3/3

12:32 am-5:06 pm

2 stops13h 34m

$540

LondonSan Francisco

YXU - SFO

YXUSFO

London

Fri 8/29

6:00 am-11:56 am

1 stop8h 56m

San Francisco

Fri 9/5

7:30 am-7:07 pm

1 stop8h 37m

$1,034

LondonSan Francisco

YXU - SFO

YXUSFO

London

Fri 8/29

6:00 am-3:55 pm

2 stops12h 55m

San Francisco

Fri 9/5

6:05 pm-5:12 am

1 stop8h 07m

$1,286

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San Francisco from

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

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

What is the cheapest month to fly to San Francisco?

If you aren’t able to travel to San Francisco during the month of May, then flying in June is also cheap. Prices for this month can be found on momondo for an average of $294.

When to book flights from London, Ontario to San Francisco

Are you open to changing your travel dates? Check out the ideal times to fly from London, Ontario to San Francisco according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

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

Find info about flight duration, direct flights, and airports for your flight from London, Ontario to San Francisco

Best Price Found

$159

Fastest flight time

8h 03m

Direct flights

None

Airports in San Francisco

1 airport
The best one-way flight to San Francisco from London, Ontario in the past 72 hours is $159. The best round-trip flight deal from London, Ontario to San Francisco found on momondo in the last 72 hours is $286.
The fastest flight from London, Ontario to San Francisco takes 8h 03m
There are no direct flights from London, Ontario to San Francisco. Popular non-direct route for this connection is London Airport - San Francisco Airport.
There is 1 airport near San Francisco: San Francisco (SFO)
Search flight deals

  • How far is London to San Francisco by plane?

    The distance between London and San Francisco is about 2173.0 mi. Typically, this will take 8h 03m by plane in normal conditions.

  • When did momondo last update prices for flights from London Airport to San Francisco Airport?

    Prices for flights from London Airport to San Francisco Airport are updated daily.

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London Airport to San Francisco Airport.

  • What documentation or ID do you need to fly to San Francisco Airport?

    The necessary travel and health documents for your San Francisco 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 London, Ontario to San Francisco?

Best airlines flying from London, Ontario to San Francisco

Compare and see reviews for airlines that fly from London, Ontario to San Francisco with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom $222Free CancellationRating
7.1
9,851 reviews
Search Air Canada flights

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Santa Cruz
Carmel-by-the-Sea
Modesto
Calistoga
Hayward
Bodega Bay
Sonoma
Roseville
Santa Clara
Big Sur
Daly City
Berkeley
Walnut Creek
Fremont
Half Moon Bay
South San Francisco
Redwood City
Vallejo
Sunnyvale
Pacific Grove

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to San Francisco from London.

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

All flight searches from London to San Francisco on momondo can be filtered to show those which offer flexible booking policies.

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

Once all potential London to San Francisco flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Yes. momondo can track prices for London to San Francisco flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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