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Cheap flights from London, Ontario to San Francisco from C$ 336

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 7/8. 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
6:10 a.m. - 12:00 p.m.
YXU
-
SFO
8h 50m
1 stop
WestJet Logo
6:05 p.m. - 5:20 a.m.
SFO
-
YXU
8h 15m
1 stop
C$ 368WestJet
Fri, 7 Aug - Thu, 13 Aug
WestJet Logo
6:10 a.m. - 12:00 p.m.
YXU
-
SFO
8h 50m
1 stop
WestJet Logo
6:00 a.m. - 4:45 p.m.
SFO
-
YXU
7h 45m
1 stop
C$ 390WestJet
Sun, 13 Sep - Sun, 20 Sep
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$ 431WestJet
Tue, 15 Sep - Tue, 22 Sep
WestJet Logo
6:10 a.m. - 12:00 p.m.
YXU
-
SFO
8h 50m
1 stop
WestJet Logo
1:00 p.m. - 1:50 p.m.
SFO
-
YXU
21h 50m
2 stops
C$ 446WestJet
Fri, 7 Aug - Thu, 13 Aug
Air Canada Logo
3:30 p.m. - 8:59 p.m.
YXU
-
SFO
8h 29m
1 stop
Air Canada Logo
4:40 p.m. - 9:20 a.m.
SFO
-
YXU
13h 40m
1 stop
C$ 497Air Canada
Wed, 23 Sep - Sat, 26 Sep
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$ 511WestJet
Wed, 23 Sep - Sat, 26 Sep
WestJet Logo
6:10 a.m. - 12:00 p.m.
YXU
-
SFO
8h 50m
1 stop
WestJet Logo
1:00 p.m. - 4:45 p.m.
SFO
-
YXU
24h 45m
1 stop
C$ 514WestJet
Tue, 22 Sep - Sat, 26 Sep
Air Canada Logo
6:20 p.m. - 10:20 a.m.
YXU
-
SFO
19h 00m
2 stops
Air Canada Logo
12:50 p.m. - 9:20 a.m.
SFO
-
YXU
17h 30m
2 stops
C$ 524Air Canada
Wed, 23 Sep - Sat, 26 Sep
Air Canada Logo
5:40 a.m. - 10:44 a.m.
YXU
-
SFO
8h 04m
1 stop
Air Canada Logo
12:50 p.m. - 9:20 a.m.
SFO
-
YXU
17h 30m
2 stops
C$ 528Air Canada
Tue, 22 Sep - Sat, 26 Sep
WestJet Logo
5:55 p.m. - 12:00 p.m.
YXU
-
SFO
21h 05m
1 stop
WestJet Logo
6:00 a.m. - 5:20 a.m.
SFO
-
YXU
20h 20m
1 stop
C$ 544WestJet
Thu, 8 Oct - Tue, 13 Oct

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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
13 Sep
YXU3:30 p.m.London
12h 29m
2 stops
SFO12:59 a.m.San Francisco
19 Sep
SFO12:35 a.m.San Francisco
11h 15m
2 stops
YXU2:50 p.m.London
C$ 667
United Airlines
28 Jul
YXU3:30 p.m.London
12h 45m
2 stops
SFO1:15 a.m.San Francisco
4 Aug
SFO6:34 p.m.San Francisco
17h 16m
2 stops
YXU2:50 p.m.London
C$ 670
United Airlines
8 Oct
YXU10:05 a.m.London
12h 03m
2 stops
SFO7:08 p.m.San Francisco
13 Oct
SFO10:51 p.m.San Francisco
7h 29m
1 stop
YXU9:20 a.m.London
C$ 680

WestJet flights from London, Ontario to San Francisco

Our best WestJet deals on London, Ontario to San Francisco flight tickets
WestJet
7 Aug
YXU6:10 a.m.London
8h 50m
1 stop
SFO12:00 p.m.San Francisco
13 Aug
SFO6:05 p.m.San Francisco
8h 15m
1 stop
YXU5:20 a.m.London
C$ 368
WestJet
13 Sep
YXU6:10 a.m.London
8h 50m
1 stop
SFO12:00 p.m.San Francisco
20 Sep
SFO6:00 a.m.San Francisco
7h 45m
1 stop
YXU4:45 p.m.London
C$ 390
WestJet
15 Sep
YXU6:10 a.m.London
8h 50m
1 stop
SFO12:00 p.m.San Francisco
22 Sep
SFO6:00 a.m.San Francisco
20h 20m
1 stop
YXU5:20 a.m.London
C$ 431

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 28 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

Fri 7/8

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

1 stop8h 50m

San Francisco

Thu 13/8

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

1 stop8h 15m

C$ 368
Quickest round-trip

LondonSan Francisco

YXU - SFO

YXUSFO

London

Sun 13/9

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

1 stop8h 50m

San Francisco

Sun 20/9

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

1 stop7h 45m

C$ 390

LondonSan Francisco

YXU - SFO

YXUSFO

London

Tue 15/9

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

1 stop8h 50m

San Francisco

Tue 22/9

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

1 stop20h 20m

C$ 431

LondonSan Francisco

YXU - SFO

YXUSFO

London

Fri 7/8

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

1 stop8h 50m

San Francisco

Thu 13/8

1:00 p.m.-1:50 p.m.

2 stops21h 50m

C$ 446

LondonSan Francisco

YXU - SFO

YXUSFO

London

Wed 23/9

3:30 p.m.-8:59 p.m.

1 stop8h 29m

San Francisco

Sat 26/9

4:40 p.m.-9:20 a.m.

1 stop13h 40m

C$ 497

LondonSan Francisco

YXU - SFO

YXUSFO

London

Wed 23/9

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

1 stop8h 50m

San Francisco

Sat 26/9

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

1 stop20h 20m

C$ 511

LondonSan Francisco

YXU - SFO

YXUSFO

London

Tue 22/9

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

1 stop8h 50m

San Francisco

Sat 26/9

1:00 p.m.-4:45 p.m.

1 stop24h 45m

C$ 514

LondonSan Francisco

YXU - SFO

YXUSFO

London

Wed 23/9

6:20 p.m.-10:20 a.m.

2 stops19h 00m

San Francisco

Sat 26/9

12:50 p.m.-9:20 a.m.

2 stops17h 30m

C$ 524

LondonSan Francisco

YXU - SFO

YXUSFO

London

Tue 22/9

5:40 a.m.-10:44 a.m.

1 stop8h 04m

San Francisco

Sat 26/9

12:50 p.m.-9:20 a.m.

2 stops17h 30m

C$ 528

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 8/10

5:55 p.m.-12:00 p.m.

1 stop21h 05m

San Francisco

Tue 13/10

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

1 stop20h 20m

C$ 544

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?

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$ 263.

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

You could potentially save up to 48% 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

8h 50m

Direct flights

None
The fastest flight from London, Ontario to San Francisco takes 8h 50m
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 8h 50m.

  • 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$ 226Free CancellationRating
7.2
3,385 reviews
Search WestJet flights
Air CanadaPriceFrom C$ 262Free CancellationRating
7.1
11,269 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
Palo Alto
Santa Cruz
South San Francisco
Milpitas
Carmel-by-the-Sea
Turlock
Mountain View
Burlingame
Pacific Grove
Fremont
Santa Clara
Cupertino
Pacifica
Woodland
Los Banos
Roseville
Berkeley
Carmel Valley

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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