Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from London, Ontario to San Francisco from C$ 306

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 10/9. 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. - 5:20 a.m.
SFO
-
YXU
20h 20m
1 stop
C$ 435WestJet
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$ 475WestJet
Thu, 3 Sep - Thu, 17 Sep
WestJet Logo
5:55 p.m. - 9:55 p.m.
YXU
-
SFO
31h 00m
1 stop
WestJet Logo
6:00 a.m. - 5:20 a.m.
SFO
-
YXU
20h 20m
1 stop
C$ 486WestJet
Fri, 11 Sep - Fri, 18 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$ 493WestJet
Thu, 8 Oct - Tue, 13 Oct
Air Canada Logo
5:40 a.m. - 3:21 p.m.
YXU
-
SFO
12h 41m
2 stops
Air Canada Logo
7:30 p.m. - 2:50 p.m.
SFO
-
YXU
16h 20m
2 stops
C$ 523Air Canada
Thu, 10 Sep - Mon, 14 Sep
Air Canada Logo
5:40 a.m. - 12:34 p.m.
YXU
-
SFO
9h 54m
1 stop
Air Canada Logo
1:35 p.m. - 9:20 a.m.
SFO
-
YXU
16h 45m
1 stop
C$ 523Air Canada
Thu, 10 Sep - Mon, 14 Sep
Air Canada Logo
5:40 a.m. - 3:21 p.m.
YXU
-
SFO
12h 41m
2 stops
Air Canada Logo
1:35 p.m. - 9:20 a.m.
SFO
-
YXU
16h 45m
1 stop
C$ 523Air Canada
Thu, 10 Sep - Mon, 14 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$ 635United 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$ 635United Airlines
Thu, 3 Sep - Wed, 16 Sep
United Airlines Logo
3:30 p.m. - 9:02 p.m.
YXU
-
SFO
8h 32m
1 stop
United Airlines Logo
6:30 p.m. - 2:50 p.m.
SFO
-
YXU
17h 20m
2 stops
C$ 635United Airlines
Fri, 28 Aug - Fri, 4 Sep

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Early arrival? Instantly customize your results

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Air Canada flights from London, Ontario to San Francisco

Our best Air Canada deals on London, Ontario to San Francisco flight tickets
Air Canada
10 Sep
YXU5:40 a.m.London
12h 41m
2 stops
SFO3:21 p.m.San Francisco
14 Sep
SFO7:30 p.m.San Francisco
16h 20m
2 stops
YXU2:50 p.m.London
C$ 523
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$ 545
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

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$ 475
WestJet
11 Sep
YXU5:55 p.m.London
31h 00m
1 stop
SFO9:55 p.m.San Francisco
18 Sep
SFO6:00 a.m.San Francisco
20h 20m
1 stop
YXU5:20 a.m.London
C$ 486
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$ 493

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 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 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$ 435
Quickest 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$ 475

LondonSan Francisco

YXU - SFO

YXUSFO

London

Fri 11/9

5:55 p.m.-9:55 p.m.

1 stop31h 00m

San Francisco

Fri 18/9

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

1 stop20h 20m

C$ 486

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$ 493

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 10/9

5:40 a.m.-3:21 p.m.

2 stops12h 41m

San Francisco

Mon 14/9

7:30 p.m.-2:50 p.m.

2 stops16h 20m

C$ 523

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 10/9

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

1 stop9h 54m

San Francisco

Mon 14/9

1:35 p.m.-9:20 a.m.

1 stop16h 45m

C$ 523

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 10/9

5:40 a.m.-3:21 p.m.

2 stops12h 41m

San Francisco

Mon 14/9

1:35 p.m.-9:20 a.m.

1 stop16h 45m

C$ 523

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$ 635

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$ 635

LondonSan Francisco

YXU - SFO

YXUSFO

London

Fri 28/8

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

1 stop8h 32m

San Francisco

Fri 4/9

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

2 stops17h 20m

C$ 635

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 resultsSorted by cheapest first
1
2

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$ 245 to C$ 310.
The lowest price recently found on this route was C$ 475.

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$ 259.

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 04m

Direct flights

None
The fastest flight from London, Ontario to San Francisco takes 8h 04m
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 04m.

  • 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$ 223Free CancellationRating
7.2
3,424 reviews
Search WestJet flights
Air CanadaPriceFrom C$ 259Free CancellationRating
7.1
11,415 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
Alameda
Palo Alto
Milpitas
Belmont
Carmel-by-the-Sea
Turlock
Pleasant Hill
Mountain View
Burlingame
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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Mon 31/8
Mon 7/9
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States