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Cheap flights from London, Ontario to San Francisco from C$ 271

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 3/9. 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
6:00 a.m. - 4:45 p.m.
SFO
-
YXU
7h 45m
1 stop
C$ 476WestJet
Thu, 3 Sep - Thu, 17 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$ 494WestJet
Thu, 8 Oct - Tue, 13 Oct
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$ 519WestJet
Thu, 17 Sep - Thu, 24 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$ 535WestJet
Mon, 14 Sep - Mon, 21 Sep
Air Canada Logo
3:25 p.m. - 9:30 p.m.
YXU
-
SFO
9h 05m
1 stop
Air Canada Logo
9:00 a.m. - 9:52 p.m.
SFO
-
YXU
9h 52m
2 stops
C$ 546Air Canada
Thu, 19 Nov - Tue, 24 Nov
Air Canada Logo
5:40 a.m. - 10:39 a.m.
YXU
-
SFO
7h 59m
1 stop
Air Canada Logo
4:35 p.m. - 9:20 a.m.
SFO
-
YXU
13h 45m
2 stops
C$ 547Air Canada
Thu, 8 Oct - Tue, 13 Oct
Air Canada Logo
10:05 a.m. - 3:24 p.m.
YXU
-
SFO
8h 19m
1 stop
Air Canada Logo
10:45 p.m. - 9:20 a.m.
SFO
-
YXU
7h 35m
1 stop
C$ 552Air Canada
Thu, 10 Sep - Mon, 14 Sep
United Airlines Logo
5:40 a.m. - 12:34 p.m.
YXU
-
SFO
9h 54m
1 stop
United Airlines Logo
10:45 p.m. - 9:20 a.m.
SFO
-
YXU
7h 35m
1 stop
C$ 633United Airlines
Wed, 16 Sep - Fri, 18 Sep
United Airlines Logo
10:05 a.m. - 3:27 p.m.
YXU
-
SFO
8h 22m
1 stop
United Airlines Logo
6:30 p.m. - 2:50 p.m.
SFO
-
YXU
17h 20m
2 stops
C$ 636United Airlines
Thu, 3 Sep - Fri, 4 Sep
United Airlines Logo
5:40 a.m. - 12:32 p.m.
YXU
-
SFO
9h 52m
1 stop
United Airlines Logo
12:45 a.m. - 5:43 p.m.
SFO
-
YXU
13h 58m
2 stops
C$ 636United Airlines
Thu, 3 Sep - Wed, 16 Sep

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Air Canada flights from London, Ontario to San Francisco

Our best Air Canada deals on London, Ontario to San Francisco flight tickets
Air Canada
19 Nov
YXU3:25 p.m.London
9h 05m
1 stop
SFO9:30 p.m.San Francisco
24 Nov
SFO9:00 a.m.San Francisco
9h 52m
2 stops
YXU9:52 p.m.London
C$ 546
Air Canada
8 Oct
YXU5:40 a.m.London
7h 59m
1 stop
SFO10:39 a.m.San Francisco
13 Oct
SFO4:35 p.m.San Francisco
13h 45m
2 stops
YXU9:20 a.m.London
C$ 547
Air Canada
10 Sep
YXU5:40 a.m.London
12h 41m
2 stops
SFO3:21 p.m.San Francisco
14 Sep
SFO6:40 a.m.San Francisco
12h 00m
2 stops
YXU9:40 p.m.London
C$ 552

WestJet flights from London, Ontario to San Francisco

Our best WestJet deals on London, Ontario to San Francisco flight tickets
WestJet
3 Sep
YXU6:10 a.m.London
8h 50m
1 stop
SFO12:00 p.m.San Francisco
17 Sep
SFO6:00 a.m.San Francisco
7h 45m
1 stop
YXU4:45 p.m.London
C$ 476
WestJet
8 Oct
YXU6:10 a.m.London
8h 50m
1 stop
SFO12:00 p.m.San Francisco
13 Oct
SFO6:00 a.m.San Francisco
20h 20m
1 stop
YXU5:20 a.m.London
C$ 494
WestJet
17 Sep
YXU6:10 a.m.London
8h 50m
1 stop
SFO12:00 p.m.San Francisco
24 Sep
SFO6:00 a.m.San Francisco
7h 45m
1 stop
YXU4:45 p.m.London
C$ 519

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 4 August 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 3/9

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

1 stop8h 50m

San Francisco

Thu 17/9

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

1 stop7h 45m

C$ 476

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$ 494

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 17/9

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

1 stop8h 50m

San Francisco

Thu 24/9

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

1 stop7h 45m

C$ 519

LondonSan Francisco

YXU - SFO

YXUSFO

London

Mon 14/9

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

1 stop21h 05m

San Francisco

Mon 21/9

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

1 stop20h 20m

C$ 535

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 19/11

3:25 p.m.-9:30 p.m.

1 stop9h 05m

San Francisco

Tue 24/11

9:00 a.m.-9:52 p.m.

2 stops9h 52m

C$ 546

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 8/10

5:40 a.m.-10:39 a.m.

1 stop7h 59m

San Francisco

Tue 13/10

4:35 p.m.-9:20 a.m.

2 stops13h 45m

C$ 547
Quickest round-trip

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 10/9

10:05 a.m.-3:24 p.m.

1 stop8h 19m

San Francisco

Mon 14/9

10:45 p.m.-9:20 a.m.

1 stop7h 35m

C$ 552

LondonSan Francisco

YXU - SFO

YXUSFO

London

Wed 16/9

5:40 a.m.-12:34 p.m.

1 stop9h 54m

San Francisco

Fri 18/9

10:45 p.m.-9:20 a.m.

1 stop7h 35m

C$ 633

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 3/9

10:05 a.m.-3:27 p.m.

1 stop8h 22m

San Francisco

Fri 4/9

6:30 p.m.-2:50 p.m.

2 stops17h 20m

C$ 636

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 3/9

5:40 a.m.-12:32 p.m.

1 stop9h 52m

San Francisco

Wed 16/9

12:45 a.m.-5:43 p.m.

2 stops13h 58m

C$ 636

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?

Prices are currently high for flights on this route.

Typical prices usually range from C$ 246 to C$ 310.
The lowest price recently found on this route was C$ 476.

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$ 260.

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 32m

Direct flights

None
The fastest flight from London, Ontario to San Francisco takes 8h 32m
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 32m.

  • 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$ 224Free CancellationRating
7.2
3,426 reviews
Search WestJet flights
Air CanadaPriceFrom C$ 259Free CancellationRating
7.1
11,426 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
South San Francisco
Santa Cruz
Pacific Grove
Fremont
Alameda
Palo Alto
Milpitas
Belmont
Turlock
Carmel-by-the-Sea
Pleasant Hill
Mountain View
Burlingame
Cupertino
Santa Clara
Pacifica
Woodland
Los Banos
Roseville

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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