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Cheap flights from London, Ontario to San Francisco from C$ 212

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 28/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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
8:10 p.m. - 12:12 p.m.
YXU
-
SFO
19h 02m1 stop
WestJet Logo
1:00 p.m. - 6:35 a.m.
SFO
-
YXU
14h 35m1 stop
C$ 384WestJet
Thu, 29 Jan - Thu, 5 Feb
Multiple Airlines Logo
8:10 p.m. - 12:12 p.m.
YXU
-
SFO
19h 02m1 stop
Multiple Airlines Logo
8:42 p.m. - 6:35 a.m.
SFO
-
YXU
30h 53m2 stops
C$ 436Multiple Airlines
Thu, 22 Jan - Mon, 2 Feb
Multiple Airlines Logo
8:10 p.m. - 12:12 p.m.
YXU
-
SFO
19h 02m1 stop
Multiple Airlines Logo
8:42 p.m. - 6:35 a.m.
SFO
-
YXU
30h 53m2 stops
C$ 438Multiple Airlines
Thu, 22 Jan - Mon, 2 Feb
Air Canada Logo
5:10 a.m. - 10:54 a.m.
YXU
-
SFO
8h 44m1 stop
Air Canada Logo
8:30 a.m. - 9:20 p.m.
SFO
-
YXU
9h 50m1 stop
C$ 445Air Canada
Thu, 22 Jan - Mon, 2 Feb
Air Canada Logo
5:10 a.m. - 2:56 p.m.
YXU
-
SFO
12h 46m2 stops
Air Canada Logo
6:50 p.m. - 8:46 a.m.
SFO
-
YXU
10h 56m2 stops
C$ 468Air Canada
Thu, 22 Jan - Mon, 2 Feb
Air Canada Logo
9:50 a.m. - 7:09 p.m.
YXU
-
SFO
12h 19m2 stops
Air Canada Logo
5:00 a.m. - 5:05 p.m.
SFO
-
YXU
9h 05m2 stops
C$ 476Air Canada
Thu, 22 Jan - Mon, 2 Feb
Multiple Airlines Logo
8:10 p.m. - 12:12 p.m.
YXU
-
SFO
19h 02m1 stop
Multiple Airlines Logo
8:42 p.m. - 6:35 a.m.
SFO
-
YXU
30h 53m2 stops
C$ 480Multiple Airlines
Thu, 22 Jan - Mon, 2 Feb
Air Canada Logo
5:10 a.m. - 10:54 a.m.
YXU
-
SFO
8h 44m1 stop
Air Canada Logo
6:00 p.m. - 8:46 a.m.
SFO
-
YXU
11h 46m2 stops
C$ 486Air Canada
Wed, 28 Jan - Wed, 4 Feb
Air Canada Logo
5:10 a.m. - 10:54 a.m.
YXU
-
SFO
8h 44m1 stop
Air Canada Logo
2:30 p.m. - 8:46 a.m.
SFO
-
YXU
15h 16m1 stop
C$ 511Air Canada
Wed, 28 Jan - Wed, 4 Feb
Air Canada Logo
5:10 a.m. - 10:54 a.m.
YXU
-
SFO
8h 44m1 stop
Air Canada Logo
8:30 a.m. - 9:20 p.m.
SFO
-
YXU
9h 50m1 stop
C$ 541Air Canada
Thu, 22 Jan - Mon, 2 Feb

Air Canada flights from London, Ontario to San Francisco

Our best Air Canada deals on London, Ontario to San Francisco flight tickets
Air Canada
22 Jan
YXU5:10 a.m.London
8h 44m
1 stop
SFO10:54 a.m.San Francisco
2 Feb
SFO8:30 a.m.San Francisco
9h 50m
1 stop
YXU9:20 p.m.London
C$ 445
Find similar
Air Canada
22 Jan
YXU5:10 a.m.London
12h 46m
2 stops
SFO2:56 p.m.San Francisco
2 Feb
SFO6:50 p.m.San Francisco
10h 56m
2 stops
YXU8:46 a.m.London
C$ 468
Find similar
Air Canada
22 Jan
YXU9:50 a.m.London
12h 19m
2 stops
SFO7:09 p.m.San Francisco
2 Feb
SFO5:00 a.m.San Francisco
9h 05m
2 stops
YXU5:05 p.m.London
C$ 476
Find similar

United Airlines flights from London, Ontario to San Francisco

Our best United Airlines deals on London, Ontario to San Francisco flight tickets
United Airlines
29 Jan
YXU5:10 a.m.London
8h 44m
1 stop
SFO10:54 a.m.San Francisco
5 Feb
SFO8:49 a.m.San Francisco
9h 32m
1 stop
YXU9:21 p.m.London
C$ 564
Find similar
United Airlines
28 Jan
YXU9:50 a.m.London
13h 05m
2 stops
SFO7:55 p.m.San Francisco
4 Feb
SFO11:55 p.m.San Francisco
14h 10m
2 stops
YXU5:05 p.m.London
C$ 573
Find similar
United Airlines
21 Dec
YXU5:10 a.m.London
15h 40m
2 stops
SFO5:50 p.m.San Francisco
5 Jan
SFO6:50 p.m.San Francisco
19h 15m
2 stops
YXU5:05 p.m.London
C$ 1,077
Find similar

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 16 December 2025.
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

Thu 29/1

8:10 p.m.-12:12 p.m.

1 stop19h 02m

San Francisco

Thu 5/2

1:00 p.m.-6:35 a.m.

1 stop14h 35m

C$ 384

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 22/1

8:10 p.m.-12:12 p.m.

1 stop19h 02m

San Francisco

Mon 2/2

8:42 p.m.-6:35 a.m.

2 stops30h 53m

C$ 436

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 22/1

8:10 p.m.-12:12 p.m.

1 stop19h 02m

San Francisco

Mon 2/2

8:42 p.m.-6:35 a.m.

2 stops30h 53m

C$ 438

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 22/1

5:10 a.m.-10:54 a.m.

1 stop8h 44m

San Francisco

Mon 2/2

8:30 a.m.-9:20 p.m.

1 stop9h 50m

C$ 445

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 22/1

5:10 a.m.-2:56 p.m.

2 stops12h 46m

San Francisco

Mon 2/2

6:50 p.m.-8:46 a.m.

2 stops10h 56m

C$ 468

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 22/1

9:50 a.m.-7:09 p.m.

2 stops12h 19m

San Francisco

Mon 2/2

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

2 stops9h 05m

C$ 476

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 22/1

8:10 p.m.-12:12 p.m.

1 stop19h 02m

San Francisco

Mon 2/2

8:42 p.m.-6:35 a.m.

2 stops30h 53m

C$ 480

LondonSan Francisco

YXU - SFO

YXUSFO

London

Wed 28/1

5:10 a.m.-10:54 a.m.

1 stop8h 44m

San Francisco

Wed 4/2

6:00 p.m.-8:46 a.m.

2 stops11h 46m

C$ 486

LondonSan Francisco

YXU - SFO

YXUSFO

London

Wed 28/1

5:10 a.m.-10:54 a.m.

1 stop8h 44m

San Francisco

Wed 4/2

2:30 p.m.-8:46 a.m.

1 stop15h 16m

C$ 511

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 22/1

5:10 a.m.-10:54 a.m.

1 stop8h 44m

San Francisco

Mon 2/2

8:30 a.m.-9:20 p.m.

1 stop9h 50m

C$ 541

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 August. Flight prices, which tend to average around C$ 255, 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$ 365.

What is the cheapest day to depart on your flight to San Francisco?

The cheapest day to depart from London, Ontario to San Francisco is on a Saturday. Travellers who choose to depart for San Francisco on a Saturday will often find tickets for as low as C$ 499. On the other hand, Tuesday is the most expensive day to depart from London, Ontario because it is more convenient for both business and leisure travellers. As a result, prices tend to be around C$ 662.

What is the cheapest time of day to depart on your flight to San Francisco?

Flying to San Francisco from London, Ontario at noon is the least expensive time of day to depart. momondo users have found prices as low as C$ 507 when looking at flights departing at noon. In contrast, the most expensive time of day to depart to San Francisco is in the afternoon when prices are around C$ 626.

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

15h 40m

Direct flights

None
The fastest flight from London, Ontario to San Francisco takes 15h 40m
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 15h 40m.

  • 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$ 241Free CancellationRating
7.2
3,202 reviews
Search WestJet flights
Air CanadaPriceFrom C$ 304Free CancellationRating
7.1
10,527 reviews
Search Air Canada flights
United AirlinesPriceFrom C$ 347Free CancellationRating
7.4
9,094 reviews
Search United Airlines 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
Cupertino
Mill Valley
Morgan Hill
Los Banos
Mountain View
Pacifica
Woodland
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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