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Cheap flights from London, Ontario to Los Angeles from $336

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 Los Angeles departing on 9/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from London, Ontario to Los Angeles

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
5:40 am - 8:31 pm
YXU
-
ONT
17h 51m
2 stops
United Airlines Logo
1:52 pm - 9:20 am
ONT
-
YXU
16h 28m
2 stops
$610United Airlines
Thu, Sep 24 - Mon, Sep 28
United Airlines Logo
5:40 am - 10:59 pm
YXU
-
ONT
20h 19m
2 stops
United Airlines Logo
6:06 am - 9:20 am
ONT
-
YXU
24h 14m
2 stops
$643United Airlines
Thu, Sep 24 - Mon, Sep 28
United Airlines Logo
5:40 am - 8:31 pm
YXU
-
ONT
17h 51m
2 stops
United Airlines Logo
9:25 am - 9:20 am
ONT
-
YXU
20h 55m
2 stops
$647United Airlines
Thu, Sep 24 - Mon, Sep 28
United Airlines Logo
5:40 am - 9:59 pm
YXU
-
ONT
19h 19m
2 stops
United Airlines Logo
6:06 am - 9:40 pm
ONT
-
YXU
12h 34m
2 stops
$666United Airlines
Thu, Sep 24 - Mon, Sep 28
United Airlines Logo
5:40 am - 9:59 pm
YXU
-
ONT
19h 19m
2 stops
United Airlines Logo
6:06 am - 9:40 pm
ONT
-
YXU
12h 34m
2 stops
$675United Airlines
Thu, Sep 24 - Mon, Sep 28
United Airlines Logo
5:40 am - 12:50 pm
YXU
-
ONT
10h 10m
2 stops
United Airlines Logo
5:00 am - 5:43 pm
ONT
-
YXU
9h 43m
2 stops
$833United Airlines
Sun, Sep 13 - Sun, Sep 20
United Airlines Logo
5:40 am - 12:46 pm
YXU
-
ONT
10h 06m
2 stops
United Airlines Logo
5:00 am - 9:40 pm
ONT
-
YXU
13h 40m
3 stops
$1,011United Airlines
Thu, Sep 24 - Mon, Sep 28
United Airlines Logo
10:05 am - 8:58 pm
YXU
-
ONT
13h 53m
3 stops
United Airlines Logo
5:00 am - 5:43 pm
ONT
-
YXU
9h 43m
2 stops
$1,089United Airlines
Thu, Sep 24 - Mon, Sep 28
United Airlines Logo
5:40 am - 12:46 pm
YXU
-
ONT
10h 06m
2 stops
United Airlines Logo
5:00 am - 9:40 pm
ONT
-
YXU
13h 40m
3 stops
$1,138United Airlines
Thu, Sep 24 - Mon, Sep 28
United Airlines Logo
5:40 am - 12:46 pm
YXU
-
ONT
10h 06m
2 stops
United Airlines Logo
5:00 am - 9:40 pm
ONT
-
YXU
13h 40m
3 stops
$1,181United Airlines
Thu, Sep 24 - Mon, Sep 28

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United Airlines flights from London, Ontario to Ontario

Our best United Airlines deals on London, Ontario to Ontario flight tickets
United Airlines
Sep 24
YXU5:40 amLondon
17h 51m
2 stops
ONT8:31 pmOntario
Sep 28
ONT1:52 pmOntario
16h 28m
2 stops
YXU9:20 amLondon
$610
United Airlines
Sep 24
YXU5:40 amLondon
20h 19m
2 stops
ONT10:59 pmOntario
Sep 28
ONT6:06 amOntario
24h 14m
2 stops
YXU9:20 amLondon
$643
United Airlines
Sep 24
YXU5:40 amLondon
17h 51m
2 stops
ONT8:31 pmOntario
Sep 28
ONT9:25 amOntario
20h 55m
2 stops
YXU9:20 amLondon
$647

WestJet flights from London, Ontario to Ontario

Our best WestJet deals on London, Ontario to Ontario flight tickets
WestJet
Aug 4
YXU2:40 pmLondon
29h 41m
3 stops
ONT5:21 pmOntario
Aug 25
ONT6:20 amOntario
20h 00m
2 stops
YXU5:20 amLondon
$1,177
WestJet
Aug 4
YXU2:40 pmLondon
29h 41m
3 stops
ONT5:21 pmOntario
Aug 25
ONT6:20 amOntario
31h 25m
3 stops
YXU4:45 pmLondon
$1,239

momondo Fare Finder

 
Customize your flight search to find flights from London, Ontario to Ontario 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 832,500 searches. Data last updated August 2, 2026.
Use the filters below to find and compare flights from London, Ontario to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LondonOntario

YXU - ONT

YXUONT

London

Thu 9/24

5:40 am-8:31 pm

2 stops17h 51m

Ontario

Mon 9/28

1:52 pm-9:20 am

2 stops16h 28m

$610

LondonOntario

YXU - ONT

YXUONT

London

Thu 9/24

5:40 am-10:59 pm

2 stops20h 19m

Ontario

Mon 9/28

6:06 am-9:20 am

2 stops24h 14m

$643

LondonOntario

YXU - ONT

YXUONT

London

Thu 9/24

5:40 am-8:31 pm

2 stops17h 51m

Ontario

Mon 9/28

9:25 am-9:20 am

2 stops20h 55m

$647

LondonOntario

YXU - ONT

YXUONT

London

Thu 9/24

5:40 am-9:59 pm

2 stops19h 19m

Ontario

Mon 9/28

6:06 am-9:40 pm

2 stops12h 34m

$666

LondonOntario

YXU - ONT

YXUONT

London

Thu 9/24

5:40 am-9:59 pm

2 stops19h 19m

Ontario

Mon 9/28

6:06 am-9:40 pm

2 stops12h 34m

$675
Quickest round-trip

LondonOntario

YXU - ONT

YXUONT

London

Sun 9/13

5:40 am-12:50 pm

2 stops10h 10m

Ontario

Sun 9/20

5:00 am-5:43 pm

2 stops9h 43m

$833

LondonOntario

YXU - ONT

YXUONT

London

Thu 9/24

5:40 am-12:46 pm

2 stops10h 06m

Ontario

Mon 9/28

5:00 am-9:40 pm

3 stops13h 40m

$1,011

LondonOntario

YXU - ONT

YXUONT

London

Thu 9/24

10:05 am-8:58 pm

3 stops13h 53m

Ontario

Mon 9/28

5:00 am-5:43 pm

2 stops9h 43m

$1,089

LondonOntario

YXU - ONT

YXUONT

London

Thu 9/24

5:40 am-12:46 pm

2 stops10h 06m

Ontario

Mon 9/28

5:00 am-9:40 pm

3 stops13h 40m

$1,138

LondonOntario

YXU - ONT

YXUONT

London

Thu 9/24

5:40 am-12:46 pm

2 stops10h 06m

Ontario

Mon 9/28

5:00 am-9:40 pm

3 stops13h 40m

$1,181

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 resultsSorted by cheapest first
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See travel insights to Los Angeles from

How to get the cheapest flight ticket from London, Ontario to 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 airline that flies from London to Ontario?

United Airlines and Air Canada are the most popular carriers operating from London to Ontario

What airlines fly to Ontario?

Air Canada, Porter Airlines and United Airlines are the top three most popular airlines that fly to Ontario from London, Ontario according to our data. Air Canada is the first choice among our users, with 44% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 7 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.

When to book flights from London, Ontario to Ontario

Are you open to changing your travel dates? Check out the ideal times to fly from London, Ontario to Ontario according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap London, Ontario to Ontario (YXU to ONT) flight deals and tips

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

Fastest flight time

20h 19m

Direct flights

None
The fastest flight from London, Ontario to Ontario takes 20h 19m
There are no direct flights from London, Ontario to Ontario. There are no popular flight routes from London, Ontario to Ontario.
Search flight deals

Frequently asked questions about flying from London, Ontario to Ontario

  • How far is London to Ontario by plane?

    There are 2043.3 mi between London and Ontario. Flights usually cover this in 20h 19m, depending on flying conditions and air traffic around both airports.

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

    Prices for flights from London Airport to Ontario Airport are updated daily.

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London Airport to Ontario Airport.

  • What documentation or ID do you need to fly to Ontario Airport?

    The necessary travel and health documents for your Ontario 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.

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Ontario from London.

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

momondo does allow users to show only those flights to Ontario from London which offer a flexible booking policy as well as other useful filters and features.

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

Once you have performed a search for London to Ontario 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 London to Ontario right now. Can momondo alert me if prices change?

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

An easier way to manage your 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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Tue 9/1
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