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Cheap flights from London, Ontario to San Francisco from $154

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 1/28. 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

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Find the cheapest flights from London, Ontario to San Francisco

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
8:10 pm - 12:12 pm
YXU
-
SFO
19h 02m1 stop
Multiple Airlines Logo
8:42 pm - 6:35 am
SFO
-
YXU
30h 53m2 stops
$297Multiple Airlines
Thu, Jan 22 - Mon, Feb 2
Multiple Airlines Logo
8:10 pm - 12:12 pm
YXU
-
SFO
19h 02m1 stop
Multiple Airlines Logo
8:42 pm - 6:35 am
SFO
-
YXU
30h 53m2 stops
$318Multiple Airlines
Thu, Jan 22 - Mon, Feb 2
Air Canada Logo
9:50 am - 9:44 pm
YXU
-
SFO
14h 54m1 stop
Air Canada Logo
8:30 am - 9:21 pm
SFO
-
YXU
9h 51m1 stop
$321Air Canada
Sat, Jan 31 - Sat, Feb 7
Air Canada Logo
5:10 am - 10:54 am
YXU
-
SFO
8h 44m1 stop
Air Canada Logo
8:30 am - 9:20 pm
SFO
-
YXU
9h 50m1 stop
$323Air Canada
Thu, Jan 22 - Mon, Feb 2
Air Canada Logo
5:10 am - 2:56 pm
YXU
-
SFO
12h 46m2 stops
Air Canada Logo
8:49 am - 9:21 pm
SFO
-
YXU
9h 32m1 stop
$337Air Canada
Sat, Jan 31 - Sat, Feb 7
Air Canada Logo
5:10 am - 2:56 pm
YXU
-
SFO
12h 46m2 stops
Air Canada Logo
6:50 pm - 8:46 am
SFO
-
YXU
10h 56m2 stops
$342Air Canada
Sat, Jan 31 - Sat, Feb 7
Air Canada Logo
9:50 am - 7:09 pm
YXU
-
SFO
12h 19m2 stops
Air Canada Logo
5:00 am - 5:05 pm
SFO
-
YXU
9h 05m2 stops
$346Air Canada
Thu, Jan 22 - Mon, Feb 2
United Airlines Logo
5:10 am - 10:54 am
YXU
-
SFO
8h 44m1 stop
United Airlines Logo
11:15 pm - 5:05 pm
SFO
-
YXU
14h 50m2 stops
$348United Airlines
Fri, Jan 30 - Fri, Feb 6
United Airlines Logo
9:50 am - 8:10 pm
YXU
-
SFO
13h 20m2 stops
United Airlines Logo
9:20 pm - 5:05 pm
SFO
-
YXU
16h 45m2 stops
$353United Airlines
Fri, Jan 30 - Fri, Feb 6
Air Canada Logo
5:40 pm - 9:38 am
YXU
-
SFO
18h 58m2 stops
Air Canada Logo
8:49 am - 9:21 pm
SFO
-
YXU
9h 32m1 stop
$396Air Canada
Sun, Jan 11 - Tue, Jan 13

Air Canada flights from London, Ontario to San Francisco

Our best Air Canada deals on London, Ontario to San Francisco flight tickets
Air Canada
Jan 31
YXU9:50 amLondon
14h 54m
1 stop
SFO9:44 pmSan Francisco
Feb 7
SFO8:30 amSan Francisco
9h 51m
1 stop
YXU9:21 pmLondon
$321
Find similar
Air Canada
Jan 22
YXU5:10 amLondon
8h 44m
1 stop
SFO10:54 amSan Francisco
Feb 2
SFO2:30 pmSan Francisco
15h 16m
1 stop
YXU8:46 amLondon
$323
Find similar
Air Canada
Jan 31
YXU5:10 amLondon
12h 46m
2 stops
SFO2:56 pmSan Francisco
Feb 7
SFO8:49 amSan Francisco
9h 32m
1 stop
YXU9:21 pmLondon
$337
Find similar

United Airlines flights from London, Ontario to San Francisco

Our best United Airlines deals on London, Ontario to San Francisco flight tickets
United Airlines
Jan 30
YXU5:10 amLondon
8h 44m
1 stop
SFO10:54 amSan Francisco
Feb 6
SFO11:15 pmSan Francisco
14h 50m
2 stops
YXU5:05 pmLondon
$348
Find similar
United Airlines
Jan 30
YXU9:50 amLondon
13h 20m
2 stops
SFO8:10 pmSan Francisco
Feb 6
SFO9:20 pmSan Francisco
16h 45m
2 stops
YXU5:05 pmLondon
$353
Find similar
United Airlines
Jan 11
YXU5:10 amLondon
21h 49m
2 stops
SFO11:59 pmSan Francisco
Jan 13
SFO8:49 amSan Francisco
9h 32m
1 stop
YXU9:21 pmLondon
$535
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 December 18, 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

Thu 1/22

8:10 pm-12:12 pm

1 stop19h 02m

San Francisco

Mon 2/2

8:42 pm-6:35 am

2 stops30h 53m

$297

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 1/22

8:10 pm-12:12 pm

1 stop19h 02m

San Francisco

Mon 2/2

8:42 pm-6:35 am

2 stops30h 53m

$318

LondonSan Francisco

YXU - SFO

YXUSFO

London

Sat 1/31

9:50 am-9:44 pm

1 stop14h 54m

San Francisco

Sat 2/7

8:30 am-9:21 pm

1 stop9h 51m

$321

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 1/22

5:10 am-10:54 am

1 stop8h 44m

San Francisco

Mon 2/2

8:30 am-9:20 pm

1 stop9h 50m

$323

LondonSan Francisco

YXU - SFO

YXUSFO

London

Sat 1/31

5:10 am-2:56 pm

2 stops12h 46m

San Francisco

Sat 2/7

8:49 am-9:21 pm

1 stop9h 32m

$337

LondonSan Francisco

YXU - SFO

YXUSFO

London

Sat 1/31

5:10 am-2:56 pm

2 stops12h 46m

San Francisco

Sat 2/7

6:50 pm-8:46 am

2 stops10h 56m

$342

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 1/22

9:50 am-7:09 pm

2 stops12h 19m

San Francisco

Mon 2/2

5:00 am-5:05 pm

2 stops9h 05m

$346

LondonSan Francisco

YXU - SFO

YXUSFO

London

Fri 1/30

5:10 am-10:54 am

1 stop8h 44m

San Francisco

Fri 2/6

11:15 pm-5:05 pm

2 stops14h 50m

$348

LondonSan Francisco

YXU - SFO

YXUSFO

London

Fri 1/30

9:50 am-8:10 pm

2 stops13h 20m

San Francisco

Fri 2/6

9:20 pm-5:05 pm

2 stops16h 45m

$353

LondonSan Francisco

YXU - SFO

YXUSFO

London

Sun 1/11

5:40 pm-9:38 am

2 stops18h 58m

San Francisco

Tue 1/13

8:49 am-9:21 pm

1 stop9h 32m

$396

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 typical price of a round-trip flight between London, Ontario and San Francisco?

What is the cheapest month to fly to San Francisco?

If you aren’t able to travel to San Francisco during the month of August, then flying in May is also cheap. Prices for this month can be found on momondo for an average of $265.

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

Fastest flight time

15h 40m

Direct flights

None
The fastest flight from London, Ontario to San Francisco takes 15h 40m
There are no direct flights from London, Ontario to San Francisco. There are no popular flight routes from London, Ontario to San Francisco.
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 15h 40m 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
10,534 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
Sonoma
Bodega Bay
Roseville
Hayward
Calistoga
Big Sur
Berkeley
Santa Clara
Walnut Creek
Fremont
Daly City
Half Moon Bay
Vallejo
Salinas
Livermore
Sunnyvale
Turlock

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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