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Cheap flights from London, Ontario to San Francisco from C$ 262

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 21/10. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

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
8:40 p.m. - 4:40 p.m.
YXU
-
SFO
23h 00m
1 stop
WestJet Logo
6:05 p.m. - 5:20 a.m.
SFO
-
YXU
8h 15m
1 stop
C$ 476WestJet
Thu, 9 Jul - Wed, 29 Jul
WestJet Logo
8:40 p.m. - 4:40 p.m.
YXU
-
SFO
23h 00m
1 stop
WestJet Logo
6:05 p.m. - 5:20 a.m.
SFO
-
YXU
8h 15m
1 stop
C$ 492WestJet
Thu, 9 Jul - Wed, 29 Jul
WestJet Logo
5:55 p.m. - 4:40 p.m.
YXU
-
SFO
25h 45m
1 stop
WestJet Logo
6:00 a.m. - 5:20 a.m.
SFO
-
YXU
20h 20m
1 stop
C$ 534WestJet
Thu, 9 Jul - Wed, 29 Jul
United Airlines Logo
3:30 p.m. - 12:59 a.m.
YXU
-
SFO
12h 29m
2 stops
United Airlines Logo
10:51 p.m. - 9:20 a.m.
SFO
-
YXU
7h 29m
1 stop
C$ 545United Airlines
Thu, 8 Oct - Tue, 13 Oct
Air Canada Logo
5:45 a.m. - 1:15 p.m.
YXU
-
SFO
10h 30m
1 stop
Air Canada Logo
10:45 p.m. - 9:06 a.m.
SFO
-
YXU
7h 21m
1 stop
C$ 552Air Canada
Thu, 3 Dec - Sat, 5 Dec
WestJet Logo
6:10 a.m. - 12:00 p.m.
YXU
-
SFO
8h 50m
1 stop
WestJet Logo
6:00 a.m. - 5:20 a.m.
SFO
-
YXU
20h 20m
1 stop
C$ 556WestJet
Thu, 8 Oct - Tue, 13 Oct
WestJet Logo
6:10 a.m. - 12:00 p.m.
YXU
-
SFO
8h 50m
1 stop
WestJet Logo
1:00 p.m. - 5:20 a.m.
SFO
-
YXU
13h 20m
1 stop
C$ 558WestJet
Thu, 8 Oct - Tue, 13 Oct
United Airlines Logo
3:30 p.m. - 12:59 a.m.
YXU
-
SFO
12h 29m
2 stops
United Airlines Logo
12:35 a.m. - 2:55 p.m.
SFO
-
YXU
11h 20m
2 stops
C$ 559United Airlines
Thu, 8 Oct - Mon, 12 Oct
United Airlines Logo
3:25 p.m. - 12:29 a.m.
YXU
-
SFO
12h 04m
2 stops
United Airlines Logo
10:50 p.m. - 3:06 p.m.
SFO
-
YXU
13h 16m
2 stops
C$ 561United Airlines
Thu, 3 Dec - Sat, 5 Dec
WestJet Logo
2:40 p.m. - 12:00 p.m.
YXU
-
SFO
24h 20m
2 stops
WestJet Logo
6:00 a.m. - 4:45 p.m.
SFO
-
YXU
7h 45m
1 stop
C$ 590WestJet
Tue, 21 Jul - Tue, 28 Jul

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WestJet flights from London, Ontario to San Francisco

Our best WestJet deals on London, Ontario to San Francisco flight tickets
WestJet
9 Jul
YXU8:40 p.m.London
23h 00m
1 stop
SFO4:40 p.m.San Francisco
29 Jul
SFO6:05 p.m.San Francisco
8h 15m
1 stop
YXU5:20 a.m.London
C$ 476
WestJet
9 Jul
YXU8:40 p.m.London
23h 00m
1 stop
SFO4:40 p.m.San Francisco
29 Jul
SFO6:05 p.m.San Francisco
8h 15m
1 stop
YXU5:20 a.m.London
C$ 492
WestJet
9 Jul
YXU5:55 p.m.London
25h 45m
1 stop
SFO4:40 p.m.San Francisco
29 Jul
SFO6:00 a.m.San Francisco
20h 20m
1 stop
YXU5:20 a.m.London
C$ 534

Air Canada flights from London, Ontario to San Francisco

Our best Air Canada deals on London, Ontario to San Francisco flight tickets
Air Canada
3 Dec
YXU5:45 a.m.London
10h 30m
1 stop
SFO1:15 p.m.San Francisco
5 Dec
SFO10:45 p.m.San Francisco
7h 21m
1 stop
YXU9:06 a.m.London
C$ 552
Air Canada
9 Jul
YXU9:10 p.m.London
14h 59m
1 stop
SFO9:09 a.m.San Francisco
29 Jul
SFO5:00 a.m.San Francisco
9h 42m
2 stops
YXU5:42 p.m.London
C$ 609
Air Canada
3 Dec
YXU5:45 a.m.London
8h 19m
1 stop
SFO11:04 a.m.San Francisco
5 Dec
SFO2:15 p.m.San Francisco
15h 51m
1 stop
YXU9:06 a.m.London
C$ 668

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 96,600 searches. Data last updated 9 June 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

Thu 9/7

8:40 p.m.-4:40 p.m.

1 stop23h 00m

San Francisco

Wed 29/7

6:05 p.m.-5:20 a.m.

1 stop8h 15m

C$ 476

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 9/7

8:40 p.m.-4:40 p.m.

1 stop23h 00m

San Francisco

Wed 29/7

6:05 p.m.-5:20 a.m.

1 stop8h 15m

C$ 492

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 9/7

5:55 p.m.-4:40 p.m.

1 stop25h 45m

San Francisco

Wed 29/7

6:00 a.m.-5:20 a.m.

1 stop20h 20m

C$ 534

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 8/10

3:30 p.m.-12:59 a.m.

2 stops12h 29m

San Francisco

Tue 13/10

10:51 p.m.-9:20 a.m.

1 stop7h 29m

C$ 545
Quickest round-trip

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 3/12

5:45 a.m.-1:15 p.m.

1 stop10h 30m

San Francisco

Sat 5/12

10:45 p.m.-9:06 a.m.

1 stop7h 21m

C$ 552

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 8/10

6:10 a.m.-12:00 p.m.

1 stop8h 50m

San Francisco

Tue 13/10

6:00 a.m.-5:20 a.m.

1 stop20h 20m

C$ 556

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 8/10

6:10 a.m.-12:00 p.m.

1 stop8h 50m

San Francisco

Tue 13/10

1:00 p.m.-5:20 a.m.

1 stop13h 20m

C$ 558

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 8/10

3:30 p.m.-12:59 a.m.

2 stops12h 29m

San Francisco

Mon 12/10

12:35 a.m.-2:55 p.m.

2 stops11h 20m

C$ 559

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 3/12

3:25 p.m.-12:29 a.m.

2 stops12h 04m

San Francisco

Sat 5/12

10:50 p.m.-3:06 p.m.

2 stops13h 16m

C$ 561

LondonSan Francisco

YXU - SFO

YXUSFO

London

Tue 21/7

2:40 p.m.-12:00 p.m.

2 stops24h 20m

San Francisco

Tue 28/7

6:00 a.m.-4:45 p.m.

1 stop7h 45m

C$ 590

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?

The cheapest month to fly to San Francisco from London, Ontario is in February. Flight prices, which tend to average around C$ 0, are often lower during this time because this is during the off-season. The month of August is another great option to travel to San Francisco, with average flight prices from London, Ontario averaging around C$ 258.

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

You could potentially save up to 55% 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

9h 19m

Direct flights

None
The fastest flight from London, Ontario to San Francisco takes 9h 19m
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?

    San Francisco is 3496.6 km away from London. In terms of flight time, this usually takes a little over 9h 19m.

  • 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 were last updated today.

  • 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 offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify 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
WestJetPriceFrom C$ 222Free CancellationRating
7.2
3,356 reviews
Search WestJet flights
Air CanadaPriceFrom C$ 257Free CancellationRating
7.1
11,149 reviews
Search Air Canada flights

Travelling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
San Mateo
Belmont
Santa Cruz
Palo Alto
San Bruno
Milpitas
Carmel-by-the-Sea
Turlock
South San Francisco
Mountain View
Burlingame
Pacific Grove
Fremont
Santa Clara
Cupertino
Pacifica
Woodland
Los Banos
Roseville
Berkeley

Why use momondo?

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

It is quick and easy to find London to San Francisco flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to San Francisco that suits you.

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

Yes. All flights to San Francisco from London on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to San Francisco from London.

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

Price alerts on flights to San Francisco from London are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your San Francisco trip

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