What airlines fly to London, Ontario?

Air Canada, Porter Airlines and United Airlines are the top three most popular airlines that fly to London, Ontario from California according to our data. Air Canada is the first choice among our users, with 43% of people opting to fly with this airline when traveling to London, Ontario. Keep in mind that there are 7 different airlines that fly to London, Ontario on a routine basis, so you have a few additional options to choose from.

How long does it take to fly to London, Ontario?

If you’re flying from a popular airport in California, such as Los Angeles or San Diego, and flying into London, Ontario, then you can expect flight times to average 4h 40m and 4h 50m, respectively.

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

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

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

Prices for flights from California to London Airport were last updated today.

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

There are 3 operators available for flights from California to London Airport as of February 2026.

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

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from California to London Airport.

What documentation or ID do you need to fly to London Airport?

The travel and health documents required for your trip to London Airport 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 London Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$165 Cheap Flights from California to London in 2026

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Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:30 am - 9:18 pm

SFO

YXU

9h 48m

1 stop

9:25 am - 3:20 pm

YXU

SFO

8h 55m

1 stop

$417Air Canada

Sat, Apr 11 - Wed, Apr 15

7:25 am - 9:18 pm

SFO

YXU

10h 53m

2 stops

5:10 am - 10:55 am

YXU

SFO

8h 45m

1 stop

$423Air Canada

Sat, Apr 11 - Wed, Apr 15

7:25 am - 9:18 pm

SFO

YXU

10h 53m

2 stops

5:10 am - 3:32 pm

YXU

SFO

13h 22m

2 stops

$428Air Canada

Sat, Apr 11 - Wed, Apr 15

10:55 pm - 8:43 am

LAX

YXU

6h 48m

1 stop

5:10 am - 1:23 pm

YXU

LAX

11h 13m

2 stops

$447Air Canada

Wed, Apr 22 - Sun, Apr 26

7:30 am - 5:20 am

LAX

YXU

18h 50m

1 stop

6:10 am - 12:25 pm

YXU

LAX

9h 15m

1 stop

$478WestJet

Thu, May 21 - Tue, May 26

4:07 pm - 6:35 am

LAX

YXU

11h 28m

2 stops

8:10 pm - 11:27 am

YXU

LAX

18h 17m

1 stop

$480Multiple Airlines

Wed, Mar 25 - Tue, Mar 31

3:00 pm - 5:20 am

LAX

YXU

11h 20m

1 stop

5:55 pm - 11:20 am

YXU

LAX

20h 25m

2 stops

$489WestJet

Thu, May 21 - Tue, May 26

10:03 am - 6:35 am

LAX

YXU

17h 32m

2 stops

8:10 pm - 11:00 am

YXU

LAX

17h 50m

2 stops

$509Multiple Airlines

Wed, Mar 25 - Tue, Mar 31

8:30 am - 9:18 pm

SFO

YXU

9h 48m

1 stop

9:25 am - 3:20 pm

YXU

SFO

8h 55m

1 stop

$553United Airlines

Tue, Apr 7 - Tue, Apr 14

11:52 pm - 5:03 pm

SFO

YXU

14h 11m

2 stops

5:10 am - 10:55 am

YXU

SFO

8h 45m

1 stop

$563United Airlines

Tue, Apr 7 - Tue, Apr 14

United Airlines flights from California to London, Ontario

Our best United Airlines deals on California to London, Ontario flight tickets

United Airlines

Apr 4

LAX8:05 pmLos Angeles

22h 13m

2 stops

YXU9:18 pmLondon

Apr 11

YXU5:10 amLondon

8h 15m

1 stop

LAX10:25 amLos Angeles

$527

United Airlines

Apr 7

SFO8:30 amSan Francisco

9h 48m

1 stop

YXU9:18 pmLondon

Apr 14

YXU9:25 amLondon

8h 55m

1 stop

SFO3:20 pmSan Francisco

$553

United Airlines

Apr 7

SFO11:52 pmSan Francisco

14h 11m

2 stops

YXU5:03 pmLondon

Apr 14

YXU5:10 amLondon

8h 45m

1 stop

SFO10:55 amSan Francisco

$563

Air Canada flights from California to London, Ontario

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

Air Canada

Apr 11

SFO8:30 amSan Francisco

9h 48m

1 stop

YXU9:18 pmLondon

Apr 15

YXU5:10 amLondon

8h 45m

1 stop

SFO10:55 amSan Francisco

$417

Air Canada

Apr 11

SFO8:30 amSan Francisco

9h 48m

1 stop

YXU9:18 pmLondon

Apr 15

YXU5:10 amLondon

10h 20m

2 stops

SFO12:30 pmSan Francisco

$423

Air Canada

Apr 11

SFO7:25 amSan Francisco

10h 53m

2 stops

YXU9:18 pmLondon

Apr 15

YXU5:10 amLondon

13h 22m

2 stops

SFO3:32 pmSan Francisco

$428

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Sat 4/11

8:30 am-9:18 pm

1 stop9h 48m

London

Wed 4/15

9:25 am-3:20 pm

1 stop8h 55m

$417

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Sat 4/11

7:25 am-9:18 pm

2 stops10h 53m

London

Wed 4/15

5:10 am-10:55 am

1 stop8h 45m

$423

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Sat 4/11

7:25 am-9:18 pm

2 stops10h 53m

London

Wed 4/15

5:10 am-3:32 pm

2 stops13h 22m

$428

Los AngelesLondon

LAX - YXU

LAXYXU

Los Angeles

Wed 4/22

10:55 pm-8:43 am

1 stop6h 48m

London

Sun 4/26

5:10 am-1:23 pm

2 stops11h 13m

$447

Los AngelesLondon

LAX - YXU

LAXYXU

Los Angeles

Thu 5/21

7:30 am-5:20 am

1 stop18h 50m

London

Tue 5/26

6:10 am-12:25 pm

1 stop9h 15m

$478

Los AngelesLondon

LAX - YXU

LAXYXU

Los Angeles

Wed 3/25

4:07 pm-6:35 am

2 stops11h 28m

London

Tue 3/31

8:10 pm-11:27 am

1 stop18h 17m

$480

Los AngelesLondon

LAX - YXU

LAXYXU

Los Angeles

Thu 5/21

3:00 pm-5:20 am

1 stop11h 20m

London

Tue 5/26

5:55 pm-11:20 am

2 stops20h 25m

$489

Los AngelesLondon

LAX - YXU

LAXYXU

Los Angeles

Wed 3/25

10:03 am-6:35 am

2 stops17h 32m

London

Tue 3/31

8:10 pm-11:00 am

2 stops17h 50m

$509

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Tue 4/7

8:30 am-9:18 pm

1 stop9h 48m

London

Tue 4/14

9:25 am-3:20 pm

1 stop8h 55m

$553

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Tue 4/7

11:52 pm-5:03 pm

2 stops14h 11m

London

Tue 4/14

5:10 am-10:55 am

1 stop8h 45m

$563

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 California to London, Ontario

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

Other information

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

You could potentially save up to 67% on your flight if you consider stops on a California to London, Ontario flight.

Cheap California to London, Ontario flight deals and tips

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

Fastest flight time	7h 00m
Direct flights	None

The fastest flight from California to London, Ontario takes 7h 00m

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

Search flight deals

When did momondo last update prices for flights from California to London Airport?
Prices for flights from California to London Airport were last updated today.
How many operators does momondo search for flights from California to London Airport?
There are 3 operators available for flights from California to London Airport as of February 2026.
How old do you have to be to fly from California to London Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from California to London Airport.
What documentation or ID do you need to fly to London Airport?
The travel and health documents required for your trip to London Airport 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 London Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from California to London, Ontario

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

Airline	Rating	Free Cancellation	Price
WestJet	PriceFrom $162	Free Cancellation	Rating 7.2 3,270 reviews	Search WestJet flights
United Airlines	PriceFrom $192	Free Cancellation	Rating 7.4 9,335 reviews	Search United Airlines flights
Air Canada	PriceFrom $210	Free Cancellation	Rating 7.1 10,734 reviews	Search Air Canada flights

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Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from California to London for you.

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

Yes. All flights to London from California on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search for California to London flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

If you are simply researching potential flights to London, momondo offers a useful price alert feature which will track prices for flights to London from California and alert you when they change.

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Cheap flights from California to London from $165

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from California to London departing on 5/31. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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United Airlines flights from California to London, Ontario

Our best United Airlines deals on California to London, Ontario flight tickets

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

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

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

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

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

What airlines fly to London, Ontario?

How long does it take to fly to London, Ontario?

Cheap California to London, Ontario flight deals and tips

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

Fastest flight time

Direct flights

Best airlines flying from California to London, Ontario

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

Traveling to a place near London?

Why use momondo?

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

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

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

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

An easier way to manage your London, Ontario 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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Canada

Airports servicing Ontario

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Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to London

List of cabin classes available on flights landing in London. Availability may vary depending on flight origin and airline.

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