Cheap flights from London, Ontario to San Francisco from C$ 239

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 27/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from London, Ontario to San Francisco

Cheap round-trip flights

Air Canada Logo
3:40 p.m. - 8:53 p.m.YXU-SFO
8h 13m1 stop
Air Canada Logo
2:30 p.m. - 8:46 a.m.SFO-YXU
15h 16m1 stop
C$ 523Air Canada
Find Deal
Tue, 21 Oct - Mon, 27 Oct
Air Canada Logo
5:45 a.m. - 2:56 p.m.YXU-SFO
12h 11m2 stops
Air Canada Logo
8:49 a.m. - 9:21 p.m.SFO-YXU
9h 32m1 stop
C$ 528Air Canada
Find Deal
Thu, 5 Feb - Mon, 9 Feb
United Airlines Logo
9:25 a.m. - 9:22 p.m.YXU-SFO
14h 57m2 stops
United Airlines Logo
7:10 p.m. - 5:05 p.m.SFO-YXU
18h 55m2 stops
C$ 537United Airlines
Find Deal
Fri, 31 Oct - Fri, 7 Nov
Air Canada Logo
6:15 a.m. - 1:35 p.m.YXU-SFO
10h 20m2 stops
Air Canada Logo
8:50 a.m. - 9:21 p.m.SFO-YXU
9h 31m1 stop
C$ 554Air Canada
Find Deal
Tue, 21 Oct - Mon, 27 Oct
United Airlines Logo
5:45 a.m. - 10:54 a.m.YXU-SFO
8h 09m1 stop
United Airlines Logo
8:30 a.m. - 9:21 p.m.SFO-YXU
9h 51m1 stop
C$ 578United Airlines
Find Deal
Thu, 30 Oct - Thu, 6 Nov
United Airlines Logo
5:45 a.m. - 12:12 a.m.YXU-SFO
21h 27m2 stops
United Airlines Logo
8:30 a.m. - 9:21 p.m.SFO-YXU
9h 51m1 stop
C$ 586United Airlines
Find Deal
Thu, 30 Oct - Thu, 6 Nov
United Airlines Logo
3:40 p.m. - 9:32 p.m.YXU-SFO
8h 52m1 stop
United Airlines Logo
5:00 a.m. - 9:17 a.m.SFO-YXU
25h 17m2 stops
C$ 623United Airlines
Find Deal
Sat, 4 Oct - Wed, 8 Oct
Multiple Airlines Logo
6:15 a.m. - 2:40 p.m.YXU-SFO
11h 25m2 stops
Multiple Airlines Logo
11:35 a.m. - 9:17 a.m.SFO-YXU
18h 42m2 stops
C$ 630Multiple Airlines
Find Deal
Sat, 4 Oct - Wed, 8 Oct
United Airlines Logo
5:45 a.m. - 9:05 p.m.YXU-SFO
18h 20m2 stops
United Airlines Logo
5:00 a.m. - 9:21 p.m.SFO-YXU
13h 21m2 stops
C$ 666United Airlines
Find Deal
Thu, 30 Oct - Thu, 6 Nov
Air Canada Logo
6:15 a.m. - 1:35 p.m.YXU-SFO
10h 20m2 stops
Air Canada Logo
6:53 p.m. - 8:46 a.m.SFO-YXU
10h 53m2 stops
C$ 689Air Canada
Find Deal
Tue, 21 Oct - Mon, 27 Oct

Air Canada flights from London, Ontario to San Francisco

Our best Air Canada deals on London, Ontario to San Francisco flight tickets
Air Canada
21 Oct
YXU3:40 p.m.London
8h 13m
1 stop
SFO8:53 p.m.San Francisco
27 Oct
SFO2:30 p.m.San Francisco
15h 16m
1 stop
YXU8:46 a.m.London
Air Canada
5 Feb
YXU5:45 a.m.London
12h 11m
2 stops
SFO2:56 p.m.San Francisco
9 Feb
SFO8:49 a.m.San Francisco
9h 32m
1 stop
YXU9:21 p.m.London
Air Canada
21 Oct
YXU6:15 a.m.London
10h 20m
2 stops
SFO1:35 p.m.San Francisco
27 Oct
SFO8:50 a.m.San Francisco
9h 31m
1 stop
YXU9:21 p.m.London

United Airlines flights from London, Ontario to San Francisco

Our best United Airlines deals on London, Ontario to San Francisco flight tickets
United Airlines
31 Oct
YXU9:25 a.m.London
14h 57m
2 stops
SFO9:22 p.m.San Francisco
7 Nov
SFO7:10 p.m.San Francisco
18h 55m
2 stops
YXU5:05 p.m.London
United Airlines
30 Oct
YXU5:45 a.m.London
8h 09m
1 stop
SFO10:54 a.m.San Francisco
6 Nov
SFO8:30 a.m.San Francisco
9h 51m
1 stop
YXU9:21 p.m.London
United Airlines
30 Oct
YXU5:45 a.m.London
21h 27m
2 stops
SFO12:12 a.m.San Francisco
6 Nov
SFO8:30 a.m.San Francisco
9h 51m
1 stop
YXU9:21 p.m.London

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 17 September 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

Tue 21/10

3:40 p.m.-8:53 p.m.

1 stop8h 13m

San Francisco

Mon 27/10

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

1 stop15h 16m

C$ 523

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 5/2

5:45 a.m.-2:56 p.m.

2 stops12h 11m

San Francisco

Mon 9/2

8:49 a.m.-9:21 p.m.

1 stop9h 32m

C$ 528

LondonSan Francisco

YXU - SFO

YXUSFO

London

Fri 31/10

9:25 a.m.-9:22 p.m.

2 stops14h 57m

San Francisco

Fri 7/11

7:10 p.m.-5:05 p.m.

2 stops18h 55m

C$ 536

LondonSan Francisco

YXU - SFO

YXUSFO

London

Tue 21/10

6:15 a.m.-1:35 p.m.

2 stops10h 20m

San Francisco

Mon 27/10

8:50 a.m.-9:21 p.m.

1 stop9h 31m

C$ 554

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 30/10

5:45 a.m.-10:54 a.m.

1 stop8h 09m

San Francisco

Thu 6/11

8:30 a.m.-9:21 p.m.

1 stop9h 51m

C$ 578

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 30/10

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

2 stops21h 27m

San Francisco

Thu 6/11

8:30 a.m.-9:21 p.m.

1 stop9h 51m

C$ 586

LondonSan Francisco

YXU - SFO

YXUSFO

London

Sat 4/10

3:40 p.m.-9:32 p.m.

1 stop8h 52m

San Francisco

Wed 8/10

5:00 a.m.-9:17 a.m.

2 stops25h 17m

C$ 623

LondonSan Francisco

YXU - SFO

YXUSFO

London

Sat 4/10

6:15 a.m.-2:40 p.m.

2 stops11h 25m

San Francisco

Wed 8/10

11:35 a.m.-9:17 a.m.

2 stops18h 42m

C$ 630

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 30/10

5:45 a.m.-9:05 p.m.

2 stops18h 20m

San Francisco

Thu 6/11

5:00 a.m.-9:21 p.m.

2 stops13h 21m

C$ 666

LondonSan Francisco

YXU - SFO

YXUSFO

London

Tue 21/10

6:15 a.m.-1:35 p.m.

2 stops10h 20m

San Francisco

Mon 27/10

6:53 p.m.-8:46 a.m.

2 stops10h 53m

C$ 689

Flights are sorted by cheapest round-trip flights 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$ 254, 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$ 367.

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$ 498. 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$ 506 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

Direct flights

None
There are no direct flights from London, Ontario to San Francisco. There are no popular flight routes from London, Ontario to San Francisco.
  • 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 09m.

  • 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
3,095 reviews
Search WestJet flights
Air CanadaPriceFrom C$ 304Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights
United AirlinesPriceFrom C$ 347Free CancellationRating
7.4
8,926 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
Fremont
Carmel-by-the-Sea
Turlock
South San Francisco
Mountain View
Half Moon Bay
Sunnyvale
Cupertino
Mill Valley
Los Banos
Palo Alto
Pacifica
Roseville
Woodland

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

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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1 adult
Fri 17/10
Fri 24/10

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