What is the cheapest airline that flies from London to California?

WestJet, Air Canada, and United Airlines are the most popular carriers operating from London to California

Which airlines fly to California?

Air Canada, Porter Airlines and United Airlines are the top three most popular airlines that fly to California from London, Ontario according to our data. Air Canada is the first choice among our users, with 42% of people opting to fly with this airline when travelling to California. Keep in mind that there are 9 different airlines that fly to California on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from London Airport to California?

Prices for flights from London Airport to California refresh daily.

How many operators does momondo search for flights from London Airport to California?

The number of operators available for flights from London Airport to California is 2 as of September 2026.

How old do you have to be to fly from London Airport to California?

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 California.

What documentation or ID do you need to fly to California?

The travel and health documents required for your trip to California can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at California. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

C$ 252 Cheap Flights from London, Ontario to California in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from London, Ontario to California

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:10 a.m. - 12:00 p.m.YXU London-SFO San Francisco

8h 50m1 stop Calgary

5:40 p.m. - 6:35 a.m.SFO San Francisco-YXU London

9h 55m1 stop Calgary

C$ 344WestJet

Thu, 22 Oct - Thu, 29 Oct

6:10 a.m. - 12:00 p.m.YXU London-SFO San Francisco

8h 50m1 stop Calgary

5:40 p.m. - 6:35 a.m.SFO San Francisco-YXU London

9h 55m1 stop Calgary

C$ 438WestJet

Thu, 22 Oct - Thu, 29 Oct

6:10 a.m. - 9:55 p.m.YXU London-SFO San Francisco

18h 45m1 stop Calgary

5:40 p.m. - 6:35 a.m.SFO San Francisco-YXU London

9h 55m1 stop Calgary

C$ 487WestJet

Thu, 22 Oct - Thu, 29 Oct

5:30 a.m. - 12:00 p.m.YXU London-SAN San Diego

9h 30m1 stop Toronto Pearson Intl

4:45 p.m. - 8:37 a.m.SAN San Diego-YXU London

12h 52m2 stops Vancouver Intl Toronto Pearson Intl

C$ 525Air Canada

Thu, 26 Nov - Wed, 9 Dec

6:10 a.m. - 12:00 p.m.YXU London-SFO San Francisco

8h 50m1 stop Calgary

5:40 p.m. - 6:35 a.m.SFO San Francisco-YXU London

9h 55m1 stop Calgary

C$ 540WestJet

Thu, 22 Oct - Thu, 29 Oct

3:30 p.m. - 6:41 a.m.YXU London-SFO San Francisco

18h 11m2 stops Toronto Pearson Intl Denver Intl

12:55 a.m. - 2:47 p.m.SFO San Francisco-YXU London

10h 52m2 stops Chicago O'Hare Intl Toronto Pearson Intl

C$ 566Air Canada

Thu, 22 Oct - Wed, 28 Oct

5:30 a.m. - 11:10 a.m.YXU London-SFO San Francisco

8h 40m1 stop Toronto Pearson Intl

2:00 p.m. - 8:37 a.m.SFO San Francisco-YXU London

15h 37m1 stop Toronto Pearson Intl

C$ 591Air Canada

Sat, 7 Nov - Sat, 7 Nov

5:30 a.m. - 3:12 p.m.YXU London-SAN San Diego

12h 42m2 stops Toronto Pearson Intl Chicago O'Hare Intl

9:45 p.m. - 2:47 p.m.SAN San Diego-YXU London

14h 02m2 stops Washington, D.C. Dulles Intl Toronto Pearson Intl

C$ 615United Airlines

Mon, 23 Nov - Thu, 26 Nov

5:30 a.m. - 2:55 p.m.YXU London-SAN San Diego

12h 25m2 stops Toronto Pearson Intl Denver Intl

9:45 p.m. - 2:47 p.m.SAN San Diego-YXU London

14h 02m2 stops Washington, D.C. Dulles Intl Toronto Pearson Intl

C$ 617United Airlines

Mon, 23 Nov - Thu, 26 Nov

8:20 p.m. - 7:24 p.m.YXU London-SFO San Francisco

26h 04m2 stops Toronto Pearson Intl Houston George Bush Intcntl

6:38 p.m. - 2:50 p.m.SFO San Francisco-YXU London

17h 12m2 stops Chicago O'Hare Intl Toronto Pearson Intl

C$ 617United Airlines

Tue, 13 Oct - Tue, 20 Oct

Cheap last-minute flights

Enter your travel dates to find the best prices.

6:10 a.m. - 12:00 p.m.YXU London-SFO San Francisco

8h 50m1 stop Calgary

1:00 p.m. - 5:20 a.m.SFO San Francisco-YXU London

13h 20m1 stop Calgary

C$ 812WestJet

Fri, 2 Oct - Tue, 6 Oct

5:40 a.m. - 10:39 a.m.YXU London-SFO San Francisco

7h 59m1 stop Toronto Pearson Intl

12:15 p.m. - 8:25 a.m.SFO San Francisco-YXU London

17h 10m2 stops Vancouver Intl Toronto Pearson Intl

C$ 847Air Canada

Fri, 2 Oct - Tue, 6 Oct

5:40 a.m. - 10:39 a.m.YXU London-SFO San Francisco

7h 59m1 stop Toronto Pearson Intl

11:35 a.m. - 8:25 a.m.SFO San Francisco-YXU London

17h 50m1 stop Toronto Pearson Intl

C$ 847Air Canada

Fri, 2 Oct - Tue, 6 Oct

5:40 a.m. - 10:39 a.m.YXU London-SFO San Francisco

7h 59m1 stop Toronto Pearson Intl

12:15 p.m. - 8:25 a.m.SFO San Francisco-YXU London

17h 10m2 stops Vancouver Intl Toronto Pearson Intl

C$ 850Air Canada

Fri, 2 Oct - Tue, 6 Oct

10:05 a.m. - 8:47 p.m.YXU London-SFO San Francisco

13h 42m2 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

12:15 p.m. - 8:25 a.m.SFO San Francisco-YXU London

17h 10m2 stops Vancouver Intl Toronto Pearson Intl

C$ 853Air Canada

Fri, 2 Oct - Tue, 6 Oct

10:05 a.m. - 8:47 p.m.YXU London-SFO San Francisco

13h 42m2 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

12:15 p.m. - 8:25 a.m.SFO San Francisco-YXU London

17h 10m2 stops Vancouver Intl Toronto Pearson Intl

C$ 854Air Canada

Fri, 2 Oct - Tue, 6 Oct

6:10 a.m. - 12:00 p.m.YXU London-SFO San Francisco

8h 50m1 stop Calgary

1:00 p.m. - 5:20 a.m.SFO San Francisco-YXU London

13h 20m1 stop Calgary

C$ 1,171WestJet

Fri, 2 Oct - Tue, 6 Oct

5:55 p.m. - 12:00 p.m.YXU London-SFO San Francisco

21h 05m1 stop Calgary

6:00 a.m. - 5:20 a.m.SFO San Francisco-YXU London

20h 20m1 stop Calgary

C$ 1,228WestJet

Fri, 2 Oct - Tue, 6 Oct

6:10 a.m. - 12:00 p.m.YXU London-SFO San Francisco

8h 50m1 stop Calgary

2:15 p.m. - 5:20 a.m.SFO San Francisco-YXU London

12h 05m2 stops Seattle/Tacoma Intl Calgary

C$ 1,511WestJet

Fri, 2 Oct - Tue, 6 Oct

6:10 a.m. - 9:55 p.m.YXU London-SFO San Francisco

18h 45m1 stop Calgary

9:54 a.m. - 5:20 a.m.SFO San Francisco-YXU London

16h 26m2 stops Los Angeles Calgary

C$ 1,567WestJet

Fri, 2 Oct - Tue, 6 Oct

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

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

Trusted and free

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

Price Alerts

Not ready to book? to track prices.

Search flight deals

Air Canada flights from London, Ontario to California

Our best Air Canada deals on London, Ontario to California flight tickets

Air Canada

26 Nov

YXU5:30 a.m.London

9h 30m

1 stop

SAN12:00 p.m.San Diego

9 Dec

SAN4:45 p.m.San Diego

12h 52m

2 stops

YXU8:37 a.m.London

C$ 525

Air Canada

22 Oct

YXU3:30 p.m.London

18h 11m

2 stops

SFO6:41 a.m.San Francisco

28 Oct

SFO12:55 a.m.San Francisco

10h 52m

2 stops

YXU2:47 p.m.London

C$ 566

Air Canada

31 Oct

YXU3:25 p.m.London

9h 05m

1 stop

SFO9:30 p.m.San Francisco

6 Nov

SFO4:40 p.m.San Francisco

12h 57m

1 stop

YXU8:37 a.m.London

C$ 591

WestJet flights from London, Ontario to California

Our best WestJet deals on London, Ontario to California flight tickets

WestJet

22 Oct

YXU6:10 a.m.London

8h 50m

1 stop

SFO12:00 p.m.San Francisco

29 Oct

SFO5:40 p.m.San Francisco

9h 55m

1 stop

YXU6:35 a.m.London

C$ 344

WestJet

22 Oct

YXU6:10 a.m.London

8h 50m

1 stop

SFO12:00 p.m.San Francisco

29 Oct

SFO5:40 p.m.San Francisco

9h 55m

1 stop

YXU6:35 a.m.London

C$ 438

WestJet

22 Oct

YXU6:10 a.m.London

18h 45m

1 stop

SFO9:55 p.m.San Francisco

29 Oct

SFO5:40 p.m.San Francisco

9h 55m

1 stop

YXU6:35 a.m.London

C$ 487

momondo Fare Finder

Use the filters below to find and compare flights from London, Ontario to California that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

LondonSan Francisco

YXU London - SFO San Francisco

YXUSFO

London

Thu 22/10

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

1 stop8h 50m

San Francisco

Thu 29/10

5:40 p.m.-6:35 a.m.

1 stop9h 55m

C$ 344

LondonSan Francisco

YXU London - SFO San Francisco

YXUSFO

London

Thu 22/10

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

1 stop8h 50m

San Francisco

Thu 29/10

5:40 p.m.-6:35 a.m.

1 stop9h 55m

C$ 438

LondonSan Francisco

YXU London - SFO San Francisco

YXUSFO

London

Thu 22/10

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

1 stop18h 45m

San Francisco

Thu 29/10

5:40 p.m.-6:35 a.m.

1 stop9h 55m

C$ 487

LondonSan Diego

YXU London - SAN San Diego

YXUSAN

London

Thu 26/11

5:30 a.m.-12:00 p.m.

1 stop9h 30m

San Diego

Wed 9/12

4:45 p.m.-8:37 a.m.

2 stops12h 52m

C$ 525

LondonSan Francisco

YXU London - SFO San Francisco

YXUSFO

London

Thu 22/10

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

1 stop8h 50m

San Francisco

Thu 29/10

5:40 p.m.-6:35 a.m.

1 stop9h 55m

C$ 540

LondonSan Francisco

YXU London - SFO San Francisco

YXUSFO

London

Thu 22/10

3:30 p.m.-6:41 a.m.

2 stops18h 11m

San Francisco

Wed 28/10

12:55 a.m.-2:47 p.m.

2 stops10h 52m

C$ 566

LondonSan Francisco

YXU London - SFO San Francisco

YXUSFO

London

Sat 7/11

5:30 a.m.-11:10 a.m.

1 stop8h 40m

San Francisco

Sat 7/11

2:00 p.m.-8:37 a.m.

1 stop15h 37m

C$ 591

LondonSan Diego

YXU London - SAN San Diego

YXUSAN

London

Mon 23/11

5:30 a.m.-3:12 p.m.

2 stops12h 42m

San Diego

Thu 26/11

9:45 p.m.-2:47 p.m.

2 stops14h 02m

C$ 615

LondonSan Diego

YXU London - SAN San Diego

YXUSAN

London

Mon 23/11

5:30 a.m.-2:55 p.m.

2 stops12h 25m

San Diego

Thu 26/11

9:45 p.m.-2:47 p.m.

2 stops14h 02m

C$ 617

LondonSan Francisco

YXU London - SFO San Francisco

YXUSFO

London

Tue 13/10

8:20 p.m.-7:24 p.m.

2 stops26h 04m

San Francisco

Tue 20/10

6:38 p.m.-2:50 p.m.

2 stops17h 12m

C$ 617

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from London, Ontario to California

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

Prices

Airlines

What is the cheapest month to fly to California?

The cheapest month to fly to California from London, Ontario is in January. Flight prices, which tend to average around C$ 427, are often lower during this time because this is during the off-season. If you’re not able to fly to California in January, then April is your next best option. Flight prices from London, Ontario to California during April average around C$ 487.

Can stopping save me money on London, Ontario to California flights?

You could potentially save up to 9% on your flight if you consider stops on a London, Ontario to California flight.

Cheap London, Ontario to California flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London, Ontario to California

Best price found	C$ 252
Fastest flight time	8h 04m
Direct flights	None

The best one-way flight to California from London, Ontario in the past 72 hours is C$ 252. The best round-trip flight deal from London, Ontario to California found on momondo in the last 72 hours is C$ 344.

The fastest flight from London, Ontario to California takes 8h 04m

There are no direct flights from London, Ontario to California. There are no popular flight routes from London, Ontario to California.

Search flight deals

Frequently asked questions about flying from London, Ontario to California

When did momondo last update prices for flights from London Airport to California?
Prices for flights from London Airport to California refresh daily.
How many operators does momondo search for flights from London Airport to California?
The number of operators available for flights from London Airport to California is 2 as of September 2026.
How old do you have to be to fly from London Airport to California?
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 California.
What documentation or ID do you need to fly to California?
The travel and health documents required for your trip to California can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at California. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from London, Ontario to California

Compare and see reviews for airlines that fly from London, Ontario to California with momondo

Airline	Rating	Free Cancellation	Price
Air Canada	PriceFrom C$ 333	Free Cancellation	Rating 7.1 11,686 reviews		Search Air Canada flights
United Airlines	PriceFrom C$ 424	Free Cancellation	Rating 7.4 10,247 reviews		Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from London to California?

It is quick and easy to find London to California 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 California that suits you.

Can I find flights from London to California with flexible booking policies on momondo?

Flights from London to California with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from London to California?

Once all potential London to California flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from London to California right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of London to California flights. All you need is a valid email address and we will do the rest; it is that quick and easy.