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Cheap flights from London, Ontario to San Francisco from $189

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 6/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Find the cheapest flights from London, Ontario to San Francisco

Cheap round-trip flights

Enter your travel dates to find the best prices.
WestJet Logo
2:40 pm - 9:55 pm
YXU
-
SFO
10h 15m
2 stops
WestJet Logo
6:05 pm - 5:20 am
SFO
-
YXU
8h 15m
1 stop
$268WestJet
Tue, May 26 - Sat, Aug 1
WestJet Logo
6:10 am - 12:00 pm
YXU
-
SFO
8h 50m
1 stop
WestJet Logo
6:05 pm - 5:20 am
SFO
-
YXU
8h 15m
1 stop
$270WestJet
Tue, May 26 - Sat, Aug 1
WestJet Logo
6:10 am - 12:00 pm
YXU
-
SFO
8h 50m
1 stop
WestJet Logo
6:00 am - 4:45 pm
SFO
-
YXU
7h 45m
1 stop
$285WestJet
Tue, May 26 - Sun, Aug 2
WestJet Logo
2:40 pm - 9:55 pm
YXU
-
SFO
10h 15m
2 stops
WestJet Logo
6:05 pm - 5:20 am
SFO
-
YXU
8h 15m
1 stop
$289WestJet
Tue, May 26 - Tue, Aug 4
WestJet Logo
2:40 pm - 9:55 pm
YXU
-
SFO
10h 15m
2 stops
WestJet Logo
6:00 am - 4:45 pm
SFO
-
YXU
7h 45m
1 stop
$290WestJet
Tue, May 26 - Sun, Aug 2
WestJet Logo
6:10 am - 12:00 pm
YXU
-
SFO
8h 50m
1 stop
WestJet Logo
6:00 am - 4:45 pm
SFO
-
YXU
7h 45m
1 stop
$291WestJet
Tue, May 26 - Mon, Aug 3
WestJet Logo
2:40 pm - 9:55 pm
YXU
-
SFO
10h 15m
2 stops
WestJet Logo
6:05 pm - 5:20 am
SFO
-
YXU
8h 15m
1 stop
$292WestJet
Tue, May 26 - Sun, Aug 2
WestJet Logo
6:10 am - 12:00 pm
YXU
-
SFO
8h 50m
1 stop
WestJet Logo
6:05 pm - 5:20 am
SFO
-
YXU
8h 15m
1 stop
$305WestJet
Tue, May 26 - Thu, Jul 30
WestJet Logo
2:40 pm - 9:55 pm
YXU
-
SFO
10h 15m
2 stops
WestJet Logo
6:05 pm - 5:20 am
SFO
-
YXU
8h 15m
1 stop
$306WestJet
Tue, May 26 - Thu, Jul 30
WestJet Logo
2:40 pm - 9:55 pm
YXU
-
SFO
10h 15m
2 stops
WestJet Logo
6:05 pm - 5:20 am
SFO
-
YXU
8h 15m
1 stop
$310WestJet
Tue, May 26 - Thu, Jul 30

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United Airlines flights from London, Ontario to San Francisco

Our best United Airlines deals on London, Ontario to San Francisco flight tickets
United Airlines
Aug 27
YXU10:05 amLondon
8h 22m
1 stop
SFO3:27 pmSan Francisco
Aug 30
SFO12:55 amSan Francisco
11h 00m
2 stops
YXU2:55 pmLondon
$405
United Airlines
Aug 27
YXU5:40 amLondon
9h 52m
1 stop
SFO12:32 pmSan Francisco
Aug 31
SFO11:59 pmSan Francisco
11h 56m
2 stops
YXU2:55 pmLondon
$406
United Airlines
Aug 27
YXU5:40 amLondon
11h 59m
2 stops
SFO2:39 pmSan Francisco
Aug 31
SFO11:59 pmSan Francisco
11h 56m
2 stops
YXU2:55 pmLondon
$411

WestJet flights from London, Ontario to San Francisco

Our best WestJet deals on London, Ontario to San Francisco flight tickets
WestJet
Oct 8
YXU6:10 amLondon
8h 50m
1 stop
SFO12:00 pmSan Francisco
Oct 13
SFO6:00 amSan Francisco
20h 20m
1 stop
YXU5:20 amLondon
$239
WestJet
May 26
YXU2:40 pmLondon
10h 15m
2 stops
SFO9:55 pmSan Francisco
Aug 1
SFO6:05 pmSan Francisco
8h 15m
1 stop
YXU5:20 amLondon
$268
WestJet
May 26
YXU6:10 amLondon
8h 50m
1 stop
SFO12:00 pmSan Francisco
Aug 1
SFO6:05 pmSan Francisco
8h 15m
1 stop
YXU5:20 amLondon
$270

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 April 30, 2026.
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

Cheapest round-trip

LondonSan Francisco

YXU - SFO

YXUSFO

London

Tue 5/26

2:40 pm-9:55 pm

2 stops10h 15m

San Francisco

Sat 8/1

6:05 pm-5:20 am

1 stop8h 15m

$268

LondonSan Francisco

YXU - SFO

YXUSFO

London

Tue 5/26

6:10 am-12:00 pm

1 stop8h 50m

San Francisco

Sat 8/1

6:05 pm-5:20 am

1 stop8h 15m

$270
Quickest round-trip

LondonSan Francisco

YXU - SFO

YXUSFO

London

Tue 5/26

6:10 am-12:00 pm

1 stop8h 50m

San Francisco

Sun 8/2

6:00 am-4:45 pm

1 stop7h 45m

$285

LondonSan Francisco

YXU - SFO

YXUSFO

London

Tue 5/26

2:40 pm-9:55 pm

2 stops10h 15m

San Francisco

Tue 8/4

6:05 pm-5:20 am

1 stop8h 15m

$289

LondonSan Francisco

YXU - SFO

YXUSFO

London

Tue 5/26

2:40 pm-9:55 pm

2 stops10h 15m

San Francisco

Sun 8/2

6:00 am-4:45 pm

1 stop7h 45m

$290

LondonSan Francisco

YXU - SFO

YXUSFO

London

Tue 5/26

6:10 am-12:00 pm

1 stop8h 50m

San Francisco

Mon 8/3

6:00 am-4:45 pm

1 stop7h 45m

$291

LondonSan Francisco

YXU - SFO

YXUSFO

London

Tue 5/26

2:40 pm-9:55 pm

2 stops10h 15m

San Francisco

Sun 8/2

6:05 pm-5:20 am

1 stop8h 15m

$292

LondonSan Francisco

YXU - SFO

YXUSFO

London

Tue 5/26

6:10 am-12:00 pm

1 stop8h 50m

San Francisco

Thu 7/30

6:05 pm-5:20 am

1 stop8h 15m

$305

LondonSan Francisco

YXU - SFO

YXUSFO

London

Tue 5/26

2:40 pm-9:55 pm

2 stops10h 15m

San Francisco

Thu 7/30

6:05 pm-5:20 am

1 stop8h 15m

$306

LondonSan Francisco

YXU - SFO

YXUSFO

London

Tue 5/26

2:40 pm-9:55 pm

2 stops10h 15m

San Francisco

Thu 7/30

6:05 pm-5:20 am

1 stop8h 15m

$310

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 February, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $185.

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

You could potentially save up to 39% on your flight if you consider stops on a London, Ontario to San Francisco flight.

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

7h 59m

Direct flights

None
The fastest flight from London, Ontario to San Francisco takes 7h 59m
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

Frequently asked questions about flying from London, Ontario to San Francisco

  • How far is London to San Francisco by plane?

    The distance between London and San Francisco is about 2172.7 mi. Typically, this will take 7h 59m 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 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.

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
Walnut Creek
Roseville
Hayward
Berkeley
Santa Clara
Vallejo
Fremont
Big Sur
Calistoga
Daly City
South San Francisco
Pacific Grove
Sunnyvale
Salinas
Milpitas

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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