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Cheap flights from London, Ontario to San Francisco from C$ 230

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 30/3. 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
6:10 a.m. - 12:00 p.m.
YXU
-
SFO
8h 50m
1 stop
WestJet Logo
6:00 a.m. - 4:50 p.m.
SFO
-
YXU
7h 50m
1 stop
C$ 352WestJet
Wed, 8 Jul - Wed, 29 Jul
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$ 353WestJet
Wed, 8 Jul - Wed, 29 Jul
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$ 355WestJet
Wed, 8 Jul - Wed, 29 Jul
WestJet Logo
6:10 a.m. - 12:00 p.m.
YXU
-
SFO
8h 50m
1 stop
WestJet Logo
6:00 a.m. - 4:50 p.m.
SFO
-
YXU
7h 50m
1 stop
C$ 356WestJet
Wed, 8 Jul - Thu, 30 Jul
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$ 359WestJet
Wed, 8 Jul - Thu, 30 Jul
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$ 360WestJet
Thu, 9 Jul - Wed, 29 Jul
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$ 361WestJet
Thu, 9 Jul - Thu, 30 Jul
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$ 364WestJet
Thu, 9 Jul - Thu, 30 Jul
WestJet Logo
2:20 p.m. - 9:55 p.m.
YXU
-
SFO
10h 35m
2 stops
WestJet Logo
6:05 p.m. - 5:20 a.m.
SFO
-
YXU
8h 15m
1 stop
C$ 366WestJet
Fri, 31 Jul - Fri, 7 Aug
WestJet Logo
6:10 a.m. - 12:00 p.m.
YXU
-
SFO
8h 50m
1 stop
WestJet Logo
6:00 a.m. - 4:50 p.m.
SFO
-
YXU
7h 50m
1 stop
C$ 367WestJet
Wed, 8 Jul - Thu, 30 Jul

Air Canada flights from London, Ontario to San Francisco

Our best Air Canada deals on London, Ontario to San Francisco flight tickets
Air Canada
18 Apr
YXU5:10 a.m.London
8h 45m
1 stop
SFO10:55 a.m.San Francisco
20 Apr
SFO7:25 a.m.San Francisco
10h 53m
2 stops
YXU9:18 p.m.London
C$ 409
Air Canada
18 Apr
YXU5:10 a.m.London
10h 20m
2 stops
SFO12:30 p.m.San Francisco
20 Apr
SFO7:25 a.m.San Francisco
10h 53m
2 stops
YXU9:18 p.m.London
C$ 417
Air Canada
18 Apr
YXU5:10 a.m.London
8h 45m
1 stop
SFO10:55 a.m.San Francisco
20 Apr
SFO4:15 p.m.San Francisco
13h 28m
1 stop
YXU8:43 a.m.London
C$ 436

United Airlines flights from London, Ontario to San Francisco

Our best United Airlines deals on London, Ontario to San Francisco flight tickets
United Airlines
1 Mar
YXU5:40 p.m.London
10h 48m
2 stops
SFO1:28 a.m.San Francisco
4 Mar
SFO7:00 a.m.San Francisco
11h 21m
2 stops
YXU9:21 p.m.London
C$ 499
United Airlines
1 Mar
YXU5:10 a.m.London
13h 41m
2 stops
SFO3:51 p.m.San Francisco
4 Mar
SFO6:45 a.m.San Francisco
11h 36m
2 stops
YXU9:21 p.m.London
C$ 500
United Airlines
8 Jul
YXU6:00 a.m.London
7h 42m
1 stop
SFO10:42 a.m.San Francisco
30 Jul
SFO11:59 p.m.San Francisco
12h 01m
2 stops
YXU3:00 p.m.London
C$ 512

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 13 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 8/7

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

1 stop8h 50m

San Francisco

Wed 29/7

6:00 a.m.-4:50 p.m.

1 stop7h 50m

C$ 352

LondonSan Francisco

YXU - SFO

YXUSFO

London

Wed 8/7

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$ 353

LondonSan Francisco

YXU - SFO

YXUSFO

London

Wed 8/7

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$ 355

LondonSan Francisco

YXU - SFO

YXUSFO

London

Wed 8/7

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

1 stop8h 50m

San Francisco

Thu 30/7

6:00 a.m.-4:50 p.m.

1 stop7h 50m

C$ 356

LondonSan Francisco

YXU - SFO

YXUSFO

London

Wed 8/7

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

1 stop8h 50m

San Francisco

Thu 30/7

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

1 stop8h 15m

C$ 359

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$ 360

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 9/7

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

1 stop8h 50m

San Francisco

Thu 30/7

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

1 stop8h 15m

C$ 361

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 9/7

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

1 stop8h 50m

San Francisco

Thu 30/7

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

1 stop8h 15m

C$ 364

LondonSan Francisco

YXU - SFO

YXUSFO

London

Fri 31/7

2:20 p.m.-9:55 p.m.

2 stops10h 35m

San Francisco

Fri 7/8

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

1 stop8h 15m

C$ 366

LondonSan Francisco

YXU - SFO

YXUSFO

London

Wed 8/7

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

1 stop8h 50m

San Francisco

Thu 30/7

6:00 a.m.-4:50 p.m.

1 stop7h 50m

C$ 367

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

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

10h 35m

Direct flights

None
The fastest flight from London, Ontario to San Francisco takes 10h 35m
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 10h 35m.

  • 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$ 216Free CancellationRating
7.2
3,257 reviews
Search WestJet flights
Air CanadaPriceFrom C$ 251Free CancellationRating
7.1
10,717 reviews
Search Air Canada flights
United AirlinesPriceFrom C$ 342Free CancellationRating
7.4
9,286 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
Palo Alto
San Bruno
Newark
Milpitas
Carmel-by-the-Sea
Turlock
Mountain View
Santa Cruz
Burlingame
Fremont
Santa Clara
Cupertino
Mill Valley
Pacifica
South San Francisco
Morgan Hill
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

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