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 40% 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.

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

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 Sacramento, and flying into London, Ontario, then you can expect flight times to average 4h 35m and 4h 49m, respectively.

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 September 2025.

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.

$125 Cheap Flights from California to London in 2025/26

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Round-trip

One-way

Cheap round-trip flights

11:30 am - 5:12 amLAX-YXU

14h 42m2 stops

6:00 am - 5:16 pmYXU-LAX

14h 16m1 stop

$315Multiple Airlines

Find Deal

vie., oct. 17 - mié., oct. 22

6:05 pm - 5:12 amLAX-YXU

8h 07m1 stop

6:00 am - 5:16 pmYXU-LAX

14h 16m1 stop

$322WestJet

Find Deal

vie., oct. 17 - mié., oct. 22

12:35 pm - 5:12 amLAX-YXU

13h 37m2 stops

8:00 pm - 8:21 pmYXU-LAX

27h 21m2 stops

$328WestJet

Find Deal

vie., oct. 17 - mié., oct. 22

6:55 pm - 5:12 amLAX-YXU

31h 17m2 stops

8:00 pm - 8:21 pmYXU-LAX

27h 21m2 stops

$362WestJet

Find Deal

sáb., sep. 27 - mar., sep. 30

10:55 pm - 8:46 amLAX-YXU

6h 51m1 stop

9:25 am - 3:17 pmYXU-LAX

8h 52m1 stop

$366Air Canada

Find Deal

jue., feb. 19 - lun., feb. 23

6:05 pm - 5:12 amLAX-YXU

8h 07m1 stop

6:00 am - 9:46 pmYXU-LAX

18h 46m1 stop

$368WestJet

Find Deal

sáb., sep. 27 - mar., sep. 30

10:55 pm - 8:46 amLAX-YXU

6h 51m1 stop

9:25 am - 8:50 pmYXU-LAX

14h 25m2 stops

$371Air Canada

Find Deal

jue., feb. 19 - lun., feb. 23

6:10 pm - 8:46 amLAX-YXU

11h 36m2 stops

9:25 am - 8:50 pmYXU-LAX

14h 25m2 stops

$376Air Canada

Find Deal

jue., feb. 19 - lun., feb. 23

12:25 am - 5:05 pmLAX-YXU

13h 40m2 stops

9:25 am - 3:17 pmYXU-LAX

8h 52m1 stop

$442United Airlines

Find Deal

mié., feb. 18 - lun., feb. 23

12:25 am - 5:05 pmLAX-YXU

13h 40m2 stops

5:45 am - 6:45 pmYXU-LAX

16h 00m2 stops

$457United Airlines

Find Deal

mié., feb. 18 - lun., feb. 23

United Airlines flights from California to London, Ontario

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

United Airlines

Feb 18

LAX12:25 amLos Angeles

13h 40m

2 stops

YXU5:05 pmLondon

Feb 23

YXU9:25 amLondon

8h 52m

1 stop

LAX3:17 pmLos Angeles

$442

Find similar

United Airlines

Feb 18

LAX12:25 amLos Angeles

13h 40m

2 stops

YXU5:05 pmLondon

Feb 23

YXU5:45 amLondon

16h 00m

2 stops

LAX6:45 pmLos Angeles

$457

Find similar

United Airlines

Sep 29

SAN11:08 amSan Diego

19h 11m

2 stops

YXU9:19 amLondon

Oct 4

YXU3:40 pmLondon

11h 35m

2 stops

SAN12:15 amSan Diego

$485

Find similar

Air Canada flights from California to London, Ontario

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

Air Canada

Feb 19

LAX10:55 pmLos Angeles

6h 51m

1 stop

YXU8:46 amLondon

Feb 23

YXU9:25 amLondon

8h 52m

1 stop

LAX3:17 pmLos Angeles

$366

Find similar

Air Canada

Feb 19

LAX10:55 pmLos Angeles

6h 51m

1 stop

YXU8:46 amLondon

Feb 23

YXU9:25 amLondon

14h 25m

2 stops

LAX8:50 pmLos Angeles

$371

Find similar

Air Canada

Feb 19

LAX6:10 pmLos Angeles

11h 36m

2 stops

YXU8:46 amLondon

Feb 23

YXU9:25 amLondon

14h 25m

2 stops

LAX8:50 pmLos Angeles

$376

Find similar

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

Los AngelesLondon

LAX - YXU

LAXYXU

Los Angeles

vie. 10/17

11:30 am-5:12 am

2 stops14h 42m

London

mié. 10/22

6:00 am-5:16 pm

1 stop14h 16m

$315

Los AngelesLondon

LAX - YXU

LAXYXU

Los Angeles

vie. 10/17

6:05 pm-5:12 am

1 stop8h 07m

London

mié. 10/22

6:00 am-5:16 pm

1 stop14h 16m

$322

Los AngelesLondon

LAX - YXU

LAXYXU

Los Angeles

vie. 10/17

12:35 pm-5:12 am

2 stops13h 37m

London

mié. 10/22

8:00 pm-8:21 pm

2 stops27h 21m

$328

Los AngelesLondon

LAX - YXU

LAXYXU

Los Angeles

sáb. 9/27

6:55 pm-5:12 am

2 stops31h 17m

London

mar. 9/30

8:00 pm-8:21 pm

2 stops27h 21m

$362

Los AngelesLondon

LAX - YXU

LAXYXU

Los Angeles

jue. 2/19

10:55 pm-8:46 am

1 stop6h 51m

London

lun. 2/23

9:25 am-3:17 pm

1 stop8h 52m

$366

Los AngelesLondon

LAX - YXU

LAXYXU

Los Angeles

sáb. 9/27

6:05 pm-5:12 am

1 stop8h 07m

London

mar. 9/30

6:00 am-9:46 pm

1 stop18h 46m

$368

Los AngelesLondon

LAX - YXU

LAXYXU

Los Angeles

jue. 2/19

10:55 pm-8:46 am

1 stop6h 51m

London

lun. 2/23

9:25 am-8:50 pm

2 stops14h 25m

$371

Los AngelesLondon

LAX - YXU

LAXYXU

Los Angeles

jue. 2/19

6:10 pm-8:46 am

2 stops11h 36m

London

lun. 2/23

9:25 am-8:50 pm

2 stops14h 25m

$376

Los AngelesLondon

LAX - YXU

LAXYXU

Los Angeles

mié. 2/18

12:25 am-5:05 pm

2 stops13h 40m

London

lun. 2/23

9:25 am-3:17 pm

1 stop8h 52m

$442

Los AngelesLondon

LAX - YXU

LAXYXU

Los Angeles

mié. 2/18

12:25 am-5:05 pm

2 stops13h 40m

London

lun. 2/23

5:45 am-6:45 pm

2 stops16h 00m

$457

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

What is the cheapest day to depart on your flight to London, Ontario?

According to our data, Thursday is the cheapest day to fly to London, Ontario from California. The lowest ticket price found for a Thursday departure recently was $492. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Be sure to avoid booking your departure on a Wednesday as prices are generally higher than usual. According to our data, the average ticket price to London, Ontario on Wednesday is $543.

What is the cheapest time of day to depart on your flight to London, Ontario?

In the evening is the cheapest time of day to fly from California to London, Ontario when you can find flight prices for as low as $338. Flying to London, Ontario in the evening is an ideal time because this is during off-peak travel hours. In the morning is when there is more demand to fly to London, Ontario, so prices are often more expensive at around $568 per ticket.

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

You could potentially save up to 34% 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

Direct flights	None

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 September 2025.
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 3,093 reviews	Search WestJet flights
Air Canada	PriceFrom $178	Free Cancellation	Rating 7.1 10,000 reviews	Search Air Canada flights
United Airlines	PriceFrom $183	Free Cancellation	Rating 7.4 8,924 reviews	Search United Airlines 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.

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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Airports servicing Ontario

Popular cities in Canada

Flights to Torontofrom $98

Flights to Vancouverfrom $85

Flights to Montrealfrom $186

Flights to Calgaryfrom $132

Flights to Ottawafrom $190

Flights to Halifaxfrom $188

Flights to Winnipegfrom $157

Flights to Québec Cityfrom $177

Flights to Saskatoonfrom $117

Flights to Kelownafrom $156

Flights to St. John'sfrom $244

Flights to Reginafrom $206

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Cheap flights from California to London from $125

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 11/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

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Find the cheapest flights from California to London

Cheap round-trip flights

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United Airlines flights from California to London, Ontario

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

Air Canada flights from California to London, Ontario

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

momondo Fare Finder

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

See travel insights to London from

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

What is the cheapest day to depart on your flight to London, Ontario?

What is the cheapest time of day to depart on your flight to London, Ontario?

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

You could potentially save up to 34% on your flight if you consider stops on a California to London, Ontario flight.

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

What airlines fly to London, Ontario?

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 Sacramento, and flying into London, Ontario, then you can expect flight times to average 4h 35m and 4h 49m, respectively.

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

Direct flights

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

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

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

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

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