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Cheap flights from London, Ontario to San Francisco from C$ 328

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 15/5. 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

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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
6:10 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$ 451WestJet
Thu, 18 Jun - Mon, 22 Jun
WestJet Logo
6:10 a.m. - 9:55 p.m.
YXU
-
SFO
18h 45m
1 stop
WestJet Logo
6:00 a.m. - 4:45 p.m.
SFO
-
YXU
7h 45m
1 stop
C$ 454WestJet
Thu, 7 May - Tue, 12 May
WestJet Logo
8:00 a.m. - 12:05 p.m.
YXU
-
SFO
31h 05m
1 stop
WestJet Logo
6:00 a.m. - 4:45 p.m.
SFO
-
YXU
7h 45m
1 stop
C$ 461WestJet
Tue, 14 Apr - Tue, 5 May
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$ 472WestJet
Fri, 8 May - Tue, 12 May
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, 18 Jun - Mon, 29 Jun
Air Canada Logo
3:30 p.m. - 9:02 p.m.
YXU
-
SFO
8h 32m
1 stop
Air Canada Logo
7:30 p.m. - 11:42 a.m.
SFO
-
YXU
13h 12m
2 stops
C$ 495Air Canada
Thu, 18 Jun - Mon, 22 Jun
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$ 501WestJet
Thu, 9 Jul - Wed, 29 Jul
WestJet Logo
5:55 p.m. - 12:00 p.m.
YXU
-
SFO
21h 05m
1 stop
WestJet Logo
6:05 p.m. - 5:20 a.m.
SFO
-
YXU
8h 15m
1 stop
C$ 510WestJet
Sun, 31 May - Tue, 7 Jul
WestJet Logo
2:40 p.m. - 12:00 p.m.
YXU
-
SFO
24h 20m
2 stops
WestJet Logo
6:05 p.m. - 5:20 a.m.
SFO
-
YXU
8h 15m
1 stop
C$ 520WestJet
Sun, 31 May - Tue, 7 Jul
Air Canada Logo
5:10 a.m. - 10:42 a.m.
YXU
-
SFO
8h 32m
1 stop
Air Canada Logo
7:30 p.m. - 11:42 a.m.
SFO
-
YXU
13h 12m
2 stops
C$ 536Air Canada
Thu, 18 Jun - Mon, 29 Jun

WestJet flights from London, Ontario to San Francisco

Our best WestJet deals on London, Ontario to San Francisco flight tickets
WestJet
18 Jun
YXU6:10 a.m.London
8h 50m
1 stop
SFO12:00 p.m.San Francisco
22 Jun
SFO6:00 a.m.San Francisco
7h 45m
1 stop
YXU4:45 p.m.London
C$ 451
WestJet
7 May
YXU6:10 a.m.London
18h 45m
1 stop
SFO9:55 p.m.San Francisco
12 May
SFO6:00 a.m.San Francisco
7h 45m
1 stop
YXU4:45 p.m.London
C$ 454
WestJet
14 Apr
YXU8:00 a.m.London
31h 05m
1 stop
SFO12:05 p.m.San Francisco
5 May
SFO6:00 a.m.San Francisco
7h 45m
1 stop
YXU4:45 p.m.London
C$ 461

Air Canada flights from London, Ontario to San Francisco

Our best Air Canada deals on London, Ontario to San Francisco flight tickets
Air Canada
15 Apr
YXU5:10 a.m.London
8h 45m
1 stop
SFO10:55 a.m.San Francisco
5 May
SFO8:05 a.m.San Francisco
10h 33m
2 stops
YXU9:38 p.m.London
C$ 495
Air Canada
15 Apr
YXU5:10 a.m.London
8h 45m
1 stop
SFO10:55 a.m.San Francisco
4 May
SFO7:30 p.m.San Francisco
23h 08m
2 stops
YXU9:38 p.m.London
C$ 524
Air Canada
16 Apr
YXU9:25 a.m.London
15h 05m
1 stop
SFO9:30 p.m.San Francisco
5 May
SFO8:05 a.m.San Francisco
10h 33m
2 stops
YXU9:38 p.m.London
C$ 528

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 1 April 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
Quickest round-trip

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 18/6

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

1 stop8h 50m

San Francisco

Mon 22/6

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

1 stop7h 45m

C$ 451

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 7/5

6:10 a.m.-9:55 p.m.

1 stop18h 45m

San Francisco

Tue 12/5

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

1 stop7h 45m

C$ 454

LondonSan Francisco

YXU - SFO

YXUSFO

London

Tue 14/4

8:00 a.m.-12:05 p.m.

1 stop31h 05m

San Francisco

Tue 5/5

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

1 stop7h 45m

C$ 461

LondonSan Francisco

YXU - SFO

YXUSFO

London

Fri 8/5

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

1 stop8h 50m

San Francisco

Tue 12/5

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

1 stop7h 45m

C$ 472

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 18/6

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

1 stop8h 50m

San Francisco

Mon 29/6

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

1 stop7h 45m

C$ 476

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 18/6

3:30 p.m.-9:02 p.m.

1 stop8h 32m

San Francisco

Mon 22/6

7:30 p.m.-11:42 a.m.

2 stops13h 12m

C$ 495

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 9/7

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

1 stop8h 50m

San Francisco

Wed 29/7

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

1 stop8h 15m

C$ 501

LondonSan Francisco

YXU - SFO

YXUSFO

London

Sun 31/5

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

1 stop21h 05m

San Francisco

Tue 7/7

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

1 stop8h 15m

C$ 510

LondonSan Francisco

YXU - SFO

YXUSFO

London

Sun 31/5

2:40 p.m.-12:00 p.m.

2 stops24h 20m

San Francisco

Tue 7/7

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

1 stop8h 15m

C$ 520

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 18/6

5:10 a.m.-10:42 a.m.

1 stop8h 32m

San Francisco

Mon 29/6

7:30 p.m.-11:42 a.m.

2 stops13h 12m

C$ 536

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 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?

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 45m

Direct flights

None
The fastest flight from London, Ontario to San Francisco takes 8h 45m
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 45m.

  • 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$ 221Free CancellationRating
7.2
3,308 reviews
Search WestJet flights
Air CanadaPriceFrom C$ 256Free CancellationRating
7.1
10,873 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
Santa Cruz
Palo Alto
South San Francisco
San Bruno
Newark
Milpitas
Carmel-by-the-Sea
Turlock
Mountain View
Burlingame
Pacific Grove
Fremont
Santa Clara
Cupertino
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

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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