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 49% of people opting to fly with this airline when traveling to London, Ontario. Keep in mind that there are 8 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 51m, respectively.

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

WestJet, Air Canada, 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 2 operators available for flights from California to London Airport as of May 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.

$138 Cheap Flights from California to London, Ontario in 2026

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Find the cheapest flights from California to London

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:10 am - 9:40 pm

SFO

YXU

10h 30m

2 stops

10:05 am - 3:24 pm

YXU

SFO

8h 19m

1 stop

$379Air Canada

Tue, Sep 8 - Fri, Sep 11

11:55 am - 9:40 pm

LAX

YXU

6h 45m

1 stop

3:30 pm - 8:55 pm

YXU

LAX

8h 25m

1 stop

$383Air Canada

Tue, Sep 22 - Fri, Sep 25

6:00 am - 5:20 am

SFO

YXU

20h 20m

1 stop

6:10 am - 12:00 pm

YXU

SFO

8h 50m

1 stop

$385WestJet

Tue, Sep 8 - Fri, Sep 11

10:25 pm - 2:55 pm

LAX

YXU

13h 30m

2 stops

3:30 pm - 8:55 pm

YXU

LAX

8h 25m

1 stop

$392Air Canada

Tue, Sep 22 - Fri, Sep 25

8:10 am - 9:40 pm

SFO

YXU

10h 30m

2 stops

6:20 pm - 10:20 am

YXU

SFO

19h 00m

2 stops

$404Air Canada

Tue, Sep 8 - Fri, Sep 11

8:10 am - 9:40 pm

SFO

YXU

10h 30m

2 stops

6:20 pm - 12:07 pm

YXU

SFO

20h 47m

2 stops

$415Air Canada

Tue, Sep 8 - Fri, Sep 11

6:00 am - 4:45 pm

SFO

YXU

7h 45m

1 stop

6:10 am - 12:00 pm

YXU

SFO

8h 50m

1 stop

$416WestJet

Fri, Oct 9 - Tue, Oct 13

10:47 pm - 9:18 am

SFO

YXU

7h 31m

1 stop

10:05 am - 3:35 pm

YXU

SFO

8h 30m

1 stop

$553United Airlines

Fri, Jun 12 - Wed, Jun 17

3:04 pm - 5:45 pm

SAN

YXU

23h 41m

3 stops

5:40 am - 11:35 am

YXU

SAN

8h 55m

1 stop

$609United Airlines

Tue, Aug 18 - Wed, Aug 26

3:30 pm - 1:50 pm

SAN

YXU

19h 20m

2 stops

5:55 pm - 11:32 pm

YXU

SAN

32h 37m

2 stops

$626Multiple Airlines

Mon, Jun 22 - Mon, Jun 29

WestJet flights from California to London, Ontario

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

WestJet

Sep 8

SFO6:00 amSan Francisco

20h 20m

1 stop

YXU5:20 amLondon

Sep 11

YXU6:10 amLondon

8h 50m

1 stop

SFO12:00 pmSan Francisco

$385

WestJet

Oct 9

SFO6:00 amSan Francisco

7h 45m

1 stop

YXU4:45 pmLondon

Oct 13

YXU6:10 amLondon

8h 50m

1 stop

SFO12:00 pmSan Francisco

$416

WestJet

Jun 22

SAN3:30 pmSan Diego

10h 50m

1 stop

YXU5:20 amLondon

Jun 29

YXU5:55 pmLondon

23h 15m

1 stop

SAN2:10 pmSan Diego

$422

Air Canada flights from California to London, Ontario

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

Air Canada

Sep 8

SFO8:10 amSan Francisco

10h 30m

2 stops

YXU9:40 pmLondon

Sep 11

YXU10:05 amLondon

8h 19m

1 stop

SFO3:24 pmSan Francisco

$379

Air Canada

Sep 22

LAX11:55 amLos Angeles

6h 45m

1 stop

YXU9:40 pmLondon

Sep 25

YXU3:30 pmLondon

8h 25m

1 stop

LAX8:55 pmLos Angeles

$383

Air Canada

Sep 22

LAX10:25 pmLos Angeles

13h 30m

2 stops

YXU2:55 pmLondon

Sep 25

YXU3:30 pmLondon

8h 25m

1 stop

LAX8:55 pmLos Angeles

$392

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Tue 9/8

8:10 am-9:40 pm

2 stops10h 30m

London

Fri 9/11

10:05 am-3:24 pm

1 stop8h 19m

$379

Quickest round-trip

Los AngelesLondon

LAX - YXU

LAXYXU

Los Angeles

Tue 9/22

11:55 am-9:40 pm

1 stop6h 45m

London

Fri 9/25

3:30 pm-8:55 pm

1 stop8h 25m

$383

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Tue 9/8

6:00 am-5:20 am

1 stop20h 20m

London

Fri 9/11

6:10 am-12:00 pm

1 stop8h 50m

$385

Los AngelesLondon

LAX - YXU

LAXYXU

Los Angeles

Tue 9/22

10:25 pm-2:55 pm

2 stops13h 30m

London

Fri 9/25

3:30 pm-8:55 pm

1 stop8h 25m

$392

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Tue 9/8

8:10 am-9:40 pm

2 stops10h 30m

London

Fri 9/11

6:20 pm-10:20 am

2 stops19h 00m

$404

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Tue 9/8

8:10 am-9:40 pm

2 stops10h 30m

London

Fri 9/11

6:20 pm-12:07 pm

2 stops20h 47m

$415

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Fri 10/9

6:00 am-4:45 pm

1 stop7h 45m

London

Tue 10/13

6:10 am-12:00 pm

1 stop8h 50m

$416

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Fri 6/12

10:47 pm-9:18 am

1 stop7h 31m

London

Wed 6/17

10:05 am-3:35 pm

1 stop8h 30m

$553

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Tue 8/18

3:04 pm-5:45 pm

3 stops23h 41m

London

Wed 8/26

5:40 am-11:35 am

1 stop8h 55m

$609

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Mon 6/22

3:30 pm-1:50 pm

2 stops19h 20m

London

Mon 6/29

5:55 pm-11:32 pm

2 stops32h 37m

$626

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 29% 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 11m
Direct flights	None

The fastest flight from California to London, Ontario takes 7h 11m

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

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Frequently asked questions about flying from California to London, Ontario

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 2 operators available for flights from California to London Airport as of May 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 3,345 reviews		Search WestJet flights
Air Canada	PriceFrom $210	Free Cancellation	Rating 7.1 11,083 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 $138

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 10/12. 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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WestJet flights from California to London, Ontario

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

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

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What airlines fly to London, Ontario?

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Cheap California to London, Ontario flight deals and tips

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Best airlines flying from California to London, Ontario

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Why use momondo?

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.

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

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