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Cheap flights from London, Ontario to San Francisco from C$ 236

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 17/3. 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

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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.
WestJet Logo
6:15 a.m. - 12:00 p.m.
YXU
-
SFO
8h 45m
1 stop
WestJet Logo
6:00 a.m. - 5:05 p.m.
SFO
-
YXU
8h 05m
1 stop
C$ 306WestJet
Wed, 27 May - Wed, 10 Jun
WestJet Logo
6:15 a.m. - 12:00 p.m.
YXU
-
SFO
8h 45m
1 stop
WestJet Logo
6:05 p.m. - 5:25 a.m.
SFO
-
YXU
8h 20m
1 stop
C$ 316WestJet
Tue, 26 May - Fri, 12 Jun
WestJet Logo
6:15 a.m. - 12:00 p.m.
YXU
-
SFO
8h 45m
1 stop
WestJet Logo
6:05 p.m. - 5:25 a.m.
SFO
-
YXU
8h 20m
1 stop
C$ 331WestJet
Wed, 27 May - Tue, 9 Jun
WestJet Logo
2:35 p.m. - 9:55 p.m.
YXU
-
SFO
10h 20m
2 stops
WestJet Logo
6:05 p.m. - 5:25 a.m.
SFO
-
YXU
8h 20m
1 stop
C$ 332WestJet
Tue, 26 May - Tue, 9 Jun
WestJet Logo
6:15 a.m. - 12:00 p.m.
YXU
-
SFO
8h 45m
1 stop
WestJet Logo
6:05 p.m. - 5:25 a.m.
SFO
-
YXU
8h 20m
1 stop
C$ 351WestJet
Thu, 28 May - Sat, 13 Jun
WestJet Logo
2:35 p.m. - 9:55 p.m.
YXU
-
SFO
10h 20m
2 stops
WestJet Logo
6:00 a.m. - 5:05 p.m.
SFO
-
YXU
8h 05m
1 stop
C$ 358WestJet
Sun, 24 May - Tue, 9 Jun
WestJet Logo
5:55 p.m. - 12:00 p.m.
YXU
-
SFO
21h 05m
1 stop
WestJet Logo
6:05 p.m. - 5:25 a.m.
SFO
-
YXU
8h 20m
1 stop
C$ 392WestJet
Mon, 25 May - Sat, 13 Jun
Air Canada Logo
6:00 a.m. - 10:50 a.m.
YXU
-
SFO
7h 50m
1 stop
Air Canada Logo
4:30 p.m. - 8:53 a.m.
SFO
-
YXU
13h 23m
1 stop
C$ 407Air Canada
Sat, 30 May - Tue, 9 Jun
Air Canada Logo
12:20 p.m. - 9:02 p.m.
YXU
-
SFO
11h 42m
2 stops
Air Canada Logo
4:30 p.m. - 11:43 a.m.
SFO
-
YXU
16h 13m
1 stop
C$ 419Air Canada
Sat, 30 May - Tue, 9 Jun
WestJet Logo
6:15 a.m. - 12:00 p.m.
YXU
-
SFO
8h 45m
1 stop
WestJet Logo
6:05 p.m. - 5:25 a.m.
SFO
-
YXU
8h 20m
1 stop
C$ 445WestJet
Sat, 30 May - Fri, 12 Jun

United Airlines flights from London, Ontario to San Francisco

Our best United Airlines deals on London, Ontario to San Francisco flight tickets
United Airlines
26 May
YXU9:30 a.m.London
12h 39m
2 stops
SFO7:09 p.m.San Francisco
7 Jun
SFO10:45 p.m.San Francisco
7h 08m
1 stop
YXU8:53 a.m.London
C$ 472
United Airlines
26 May
YXU9:30 a.m.London
12h 39m
2 stops
SFO7:09 p.m.San Francisco
8 Jun
SFO11:30 p.m.San Francisco
12h 28m
2 stops
YXU2:58 p.m.London
C$ 474
United Airlines
17 Mar
YXU5:10 a.m.London
8h 44m
1 stop
SFO10:54 a.m.San Francisco
24 Mar
SFO11:59 p.m.San Francisco
18h 22m
2 stops
YXU9:21 p.m.London
C$ 487

WestJet flights from London, Ontario to San Francisco

Our best WestJet deals on London, Ontario to San Francisco flight tickets
WestJet
27 May
YXU6:15 a.m.London
8h 45m
1 stop
SFO12:00 p.m.San Francisco
10 Jun
SFO6:00 a.m.San Francisco
8h 05m
1 stop
YXU5:05 p.m.London
C$ 306
WestJet
26 May
YXU6:15 a.m.London
8h 45m
1 stop
SFO12:00 p.m.San Francisco
12 Jun
SFO6:05 p.m.San Francisco
8h 20m
1 stop
YXU5:25 a.m.London
C$ 316
WestJet
27 May
YXU6:15 a.m.London
8h 45m
1 stop
SFO12:00 p.m.San Francisco
9 Jun
SFO6:05 p.m.San Francisco
8h 20m
1 stop
YXU5:25 a.m.London
C$ 331

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 2 February 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

LondonSan Francisco

YXU - SFO

YXUSFO

London

Wed 27/5

6:15 a.m.-12:00 p.m.

1 stop8h 45m

San Francisco

Wed 10/6

6:00 a.m.-5:05 p.m.

1 stop8h 05m

C$ 306

LondonSan Francisco

YXU - SFO

YXUSFO

London

Tue 26/5

6:15 a.m.-12:00 p.m.

1 stop8h 45m

San Francisco

Fri 12/6

6:05 p.m.-5:25 a.m.

1 stop8h 20m

C$ 316

LondonSan Francisco

YXU - SFO

YXUSFO

London

Wed 27/5

6:15 a.m.-12:00 p.m.

1 stop8h 45m

San Francisco

Tue 9/6

6:05 p.m.-5:25 a.m.

1 stop8h 20m

C$ 331

LondonSan Francisco

YXU - SFO

YXUSFO

London

Tue 26/5

2:35 p.m.-9:55 p.m.

2 stops10h 20m

San Francisco

Tue 9/6

6:05 p.m.-5:25 a.m.

1 stop8h 20m

C$ 332

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 28/5

6:15 a.m.-12:00 p.m.

1 stop8h 45m

San Francisco

Sat 13/6

6:05 p.m.-5:25 a.m.

1 stop8h 20m

C$ 351

LondonSan Francisco

YXU - SFO

YXUSFO

London

Sun 24/5

2:35 p.m.-9:55 p.m.

2 stops10h 20m

San Francisco

Tue 9/6

6:00 a.m.-5:05 p.m.

1 stop8h 05m

C$ 358

LondonSan Francisco

YXU - SFO

YXUSFO

London

Mon 25/5

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

1 stop21h 05m

San Francisco

Sat 13/6

6:05 p.m.-5:25 a.m.

1 stop8h 20m

C$ 392

LondonSan Francisco

YXU - SFO

YXUSFO

London

Sat 30/5

6:00 a.m.-10:50 a.m.

1 stop7h 50m

San Francisco

Tue 9/6

4:30 p.m.-8:53 a.m.

1 stop13h 23m

C$ 407

LondonSan Francisco

YXU - SFO

YXUSFO

London

Sat 30/5

12:20 p.m.-9:02 p.m.

2 stops11h 42m

San Francisco

Tue 9/6

4:30 p.m.-11:43 a.m.

1 stop16h 13m

C$ 419

LondonSan Francisco

YXU - SFO

YXUSFO

London

Sat 30/5

6:15 a.m.-12:00 p.m.

1 stop8h 45m

San Francisco

Fri 12/6

6:05 p.m.-5:25 a.m.

1 stop8h 20m

C$ 445

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 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 August. Flight prices, which tend to average around C$ 252, are often lower during this time because this is during the off-season. The month of May is another great option to travel to San Francisco, with average flight prices from London, Ontario averaging around C$ 361.

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

8h 44m

Direct flights

None
The fastest flight from London, Ontario to San Francisco takes 8h 44m
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?

    San Francisco is 3497.0 km away from London. In terms of flight time, this usually takes a little over 8h 44m.

  • 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$ 217Free CancellationRating
7.2
3,254 reviews
Search WestJet flights
Air CanadaPriceFrom C$ 251Free CancellationRating
7.1
10,673 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
Los Altos
San Bruno
Santa Cruz
Newark
Milpitas
Carmel-by-the-Sea
Turlock
South San Francisco
Palo Alto
Burlingame
Fremont
Santa Clara
Cupertino
Mill Valley
Pacifica
Morgan Hill
Woodland
Los Banos

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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