Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from London, Ontario to San Francisco from C$ 231

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 16/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult

Discover deals from 900+ travel sites with momondo.

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

Find the cheapest flights from London, Ontario to San Francisco

Cheap round-trip flights

WestJet Logo
8:00 p.m. - 11:54 a.m.YXU-SFO
18h 54m1 stop
WestJet Logo
7:30 a.m. - 7:07 p.m.SFO-YXU
8h 37m1 stop
C$ 401WestJet
Find Deal
Fri, 17 Oct - Fri, 24 Oct
Logo
8:00 p.m. - 11:54 a.m.YXU-SFO
18h 54m1 stop
Logo
10:15 a.m. - 7:07 p.m.SFO-YXU
29h 52m2 stops
C$ 433
Find Deal
Fri, 17 Oct - Fri, 24 Oct
WestJet Logo
6:00 a.m. - 11:54 a.m.YXU-SFO
8h 54m1 stop
WestJet Logo
12:50 p.m. - 5:12 a.m.SFO-YXU
13h 22m1 stop
C$ 452WestJet
Find Deal
Wed, 15 Oct - Wed, 22 Oct
Logo
8:00 p.m. - 1:57 p.m.YXU-SFO
20h 57m2 stops
Logo
7:10 a.m. - 9:27 p.m.SFO-YXU
11h 17m2 stops
C$ 462
Find Deal
Fri, 17 Oct - Fri, 24 Oct
Logo
8:00 p.m. - 9:24 p.m.YXU-SFO
28h 24m1 stop
Logo
10:15 a.m. - 5:12 a.m.SFO-YXU
15h 57m2 stops
C$ 476
Find Deal
Wed, 15 Oct - Wed, 22 Oct
WestJet Logo
6:00 a.m. - 11:54 a.m.YXU-SFO
8h 54m1 stop
WestJet Logo
7:30 a.m. - 7:07 p.m.SFO-YXU
8h 37m1 stop
C$ 493WestJet
Find Deal
Thu, 2 Oct - Sat, 25 Oct
Air Canada Logo
6:15 a.m. - 3:28 p.m.YXU-SFO
12h 13m2 stops
Air Canada Logo
6:00 p.m. - 8:46 a.m.SFO-YXU
11h 46m2 stops
C$ 533Air Canada
Find Deal
Thu, 2 Oct - Tue, 28 Oct
Air Canada Logo
6:15 a.m. - 3:28 p.m.YXU-SFO
12h 13m2 stops
Air Canada Logo
8:40 a.m. - 9:27 p.m.SFO-YXU
9h 47m1 stop
C$ 562Air Canada
Find Deal
Thu, 2 Oct - Sat, 25 Oct
United Airlines Logo
3:40 p.m. - 9:32 p.m.YXU-SFO
8h 52m1 stop
United Airlines Logo
11:00 p.m. - 5:06 p.m.SFO-YXU
15h 06m2 stops
C$ 617United Airlines
Find Deal
Fri, 3 Oct - Sat, 25 Oct
United Airlines Logo
9:55 a.m. - 7:05 p.m.YXU-SFO
12h 10m2 stops
United Airlines Logo
12:43 a.m. - 3:02 p.m.SFO-YXU
11h 19m2 stops
C$ 624United Airlines
Find Deal
Fri, 17 Oct - Thu, 23 Oct

WestJet flights from London, Ontario to San Francisco

Our best WestJet deals on London, Ontario to San Francisco flight tickets
WestJet
17 Oct
YXU8:00 p.m.London
18h 54m
1 stop
SFO11:54 a.m.San Francisco
24 Oct
SFO7:30 a.m.San Francisco
8h 37m
1 stop
YXU7:07 p.m.London
C$ 401
Find similar
WestJet
15 Oct
YXU6:00 a.m.London
8h 54m
1 stop
SFO11:54 a.m.San Francisco
22 Oct
SFO12:50 p.m.San Francisco
13h 22m
1 stop
YXU5:12 a.m.London
C$ 452
Find similar
WestJet
2 Oct
YXU6:00 a.m.London
8h 54m
1 stop
SFO11:54 a.m.San Francisco
25 Oct
SFO7:30 a.m.San Francisco
8h 37m
1 stop
YXU7:07 p.m.London
C$ 493
Find similar

Air Canada flights from London, Ontario to San Francisco

Our best Air Canada deals on London, Ontario to San Francisco flight tickets
Air Canada
2 Oct
YXU6:15 a.m.London
12h 13m
2 stops
SFO3:28 p.m.San Francisco
28 Oct
SFO6:00 p.m.San Francisco
11h 46m
2 stops
YXU8:46 a.m.London
C$ 533
Find similar
Air Canada
2 Oct
YXU6:15 a.m.London
12h 13m
2 stops
SFO3:28 p.m.San Francisco
25 Oct
SFO8:40 a.m.San Francisco
9h 47m
1 stop
YXU9:27 p.m.London
C$ 562
Find similar
Air Canada
2 Oct
YXU6:15 a.m.London
12h 13m
2 stops
SFO3:28 p.m.San Francisco
27 Oct
SFO12:00 p.m.San Francisco
17h 46m
1 stop
YXU8:46 a.m.London
C$ 583
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 2 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

Fri 17/10

8:00 p.m.-11:54 a.m.

1 stop18h 54m

San Francisco

Fri 24/10

7:30 a.m.-7:07 p.m.

1 stop8h 37m

C$ 401

LondonSan Francisco

YXU - SFO

YXUSFO

London

Fri 17/10

8:00 p.m.-11:54 a.m.

1 stop18h 54m

San Francisco

Fri 24/10

10:15 a.m.-7:07 p.m.

2 stops29h 52m

C$ 433

LondonSan Francisco

YXU - SFO

YXUSFO

London

Wed 15/10

6:00 a.m.-11:54 a.m.

1 stop8h 54m

San Francisco

Wed 22/10

12:50 p.m.-5:12 a.m.

1 stop13h 22m

C$ 452

LondonSan Francisco

YXU - SFO

YXUSFO

London

Fri 17/10

8:00 p.m.-1:57 p.m.

2 stops20h 57m

San Francisco

Fri 24/10

7:10 a.m.-9:27 p.m.

2 stops11h 17m

C$ 462

LondonSan Francisco

YXU - SFO

YXUSFO

London

Wed 15/10

8:00 p.m.-9:24 p.m.

1 stop28h 24m

San Francisco

Wed 22/10

10:15 a.m.-5:12 a.m.

2 stops15h 57m

C$ 476

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 2/10

6:00 a.m.-11:54 a.m.

1 stop8h 54m

San Francisco

Sat 25/10

7:30 a.m.-7:07 p.m.

1 stop8h 37m

C$ 493

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 2/10

6:15 a.m.-3:28 p.m.

2 stops12h 13m

San Francisco

Tue 28/10

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

2 stops11h 46m

C$ 533

LondonSan Francisco

YXU - SFO

YXUSFO

London

Thu 2/10

6:15 a.m.-3:28 p.m.

2 stops12h 13m

San Francisco

Sat 25/10

8:40 a.m.-9:27 p.m.

1 stop9h 47m

C$ 562

LondonSan Francisco

YXU - SFO

YXUSFO

London

Fri 3/10

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

1 stop8h 52m

San Francisco

Sat 25/10

11:00 p.m.-5:06 p.m.

2 stops15h 06m

C$ 617

LondonSan Francisco

YXU - SFO

YXUSFO

London

Fri 17/10

9:55 a.m.-7:05 p.m.

2 stops12h 10m

San Francisco

Thu 23/10

12:43 a.m.-3:02 p.m.

2 stops11h 19m

C$ 624

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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 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$ 304, 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$ 661.

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$ 625.

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.
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 8h 05m.

  • 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
3,082 reviews
Search WestJet flights
Air CanadaPriceFrom C$ 303Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights
United AirlinesPriceFrom C$ 346Free CancellationRating
7.4
8,937 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
Turlock
South San Francisco
Mountain View
Sunnyvale
Half Moon Bay
Cupertino
Mill Valley
Carmel-by-the-Sea
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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sun 7/9
Sun 14/9
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States