Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from London Heathrow Airport to Los Angeles from $460

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 Heathrow Airport to Los Angeles departing on 9/1. 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 Heathrow Airport to Los Angeles

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
9:30 am - 10:53 pm
LHR
-
ONT
20h 23m
2 stops
United Airlines Logo
6:46 am - 7:55 am
ONT
-
LHR
17h 09m
1 stop
$553United Airlines
Fri, Oct 30 - Mon, Nov 2
United Airlines Logo
7:25 am - 10:51 pm
LHR
-
ONT
23h 26m
2 stops
United Airlines Logo
6:10 am - 6:45 am
ONT
-
LHR
16h 35m
1 stop
$554United Airlines
Wed, Jul 8 - Mon, Jul 13
United Airlines Logo
7:30 am - 6:16 pm
LHR
-
ONT
18h 46m
2 stops
United Airlines Logo
1:18 pm - 8:40 pm
ONT
-
LHR
23h 22m
2 stops
$555United Airlines
Sat, Aug 29 - Wed, Sep 2
United Airlines Logo
7:30 am - 8:56 pm
LHR
-
ONT
21h 26m
2 stops
United Airlines Logo
1:00 pm - 9:40 am
ONT
-
LHR
12h 40m
1 stop
$556United Airlines
Thu, Nov 19 - Thu, Dec 3
United Airlines Logo
1:40 pm - 9:55 pm
LHR
-
ONT
16h 15m
1 stop
United Airlines Logo
4:20 pm - 2:10 pm
ONT
-
LHR
13h 50m
1 stop
$584United Airlines
Thu, Jul 9 - Sat, Jul 25
United Airlines Logo
9:30 am - 10:51 pm
LHR
-
ONT
21h 21m
2 stops
United Airlines Logo
1:18 pm - 9:40 am
ONT
-
LHR
12h 22m
1 stop
$586United Airlines
Wed, Jul 8 - Mon, Jul 13
United Airlines Logo
1:40 pm - 9:55 pm
LHR
-
ONT
16h 15m
1 stop
United Airlines Logo
1:18 pm - 12:35 pm
ONT
-
LHR
15h 17m
1 stop
$587United Airlines
Thu, Jul 9 - Wed, Jul 15
United Airlines Logo
11:25 am - 8:58 pm
LHR
-
ONT
17h 33m
1 stop
United Airlines Logo
1:24 pm - 9:40 am
ONT
-
LHR
12h 16m
1 stop
$588United Airlines
Fri, Sep 25 - Wed, Sep 30
Air Canada Logo
9:30 am - 12:46 pm
LHR
-
ONT
35h 16m
2 stops
Air Canada Logo
5:00 am - 6:30 am
ONT
-
LHR
17h 30m
2 stops
$592Air Canada
Wed, Sep 23 - Sun, Sep 27
Air Canada Logo
9:30 am - 12:46 pm
LHR
-
ONT
35h 16m
2 stops
Air Canada Logo
5:00 am - 6:30 am
ONT
-
LHR
17h 30m
2 stops
$593Air Canada
Wed, Sep 23 - Sun, Sep 27

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

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

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

British Airways flights from London Heathrow Airport to Ontario

Our best British Airways deals on London Heathrow Airport to Ontario flight tickets
British Airways
Jul 3
LHR2:25 pmLondon Heathrow
16h 07m
1 stop
ONT10:32 pmOntario
Jul 25
ONT1:11 pmOntario
13h 54m
1 stop
LHR11:05 amLondon Heathrow
$592
British Airways
Jul 3
LHR10:05 amLondon Heathrow
17h 54m
1 stop
ONT7:59 pmOntario
Jul 31
ONT12:35 pmOntario
16h 15m
1 stop
LHR12:50 pmLondon Heathrow
$607
British Airways
Dec 10
LHR2:45 pmLondon Heathrow
15h 34m
1 stop
ONT10:19 pmOntario
Dec 24
ONT2:42 pmOntario
13h 33m
1 stop
LHR12:15 pmLondon Heathrow
$624

Air Canada flights from London Heathrow Airport to Ontario

Our best Air Canada deals on London Heathrow Airport to Ontario flight tickets
Air Canada
Sep 23
LHR9:30 amLondon Heathrow
35h 16m
2 stops
ONT12:46 pmOntario
Sep 27
ONT5:00 amOntario
17h 30m
2 stops
LHR6:30 amLondon Heathrow
$592
Air Canada
Sep 23
LHR9:30 amLondon Heathrow
35h 16m
2 stops
ONT12:46 pmOntario
Sep 27
ONT5:00 amOntario
17h 30m
2 stops
LHR6:30 amLondon Heathrow
$593
Air Canada
Jul 8
LHR9:30 amLondon Heathrow
35h 17m
2 stops
ONT12:47 pmOntario
Jul 13
ONT5:00 amOntario
21h 00m
2 stops
LHR10:00 amLondon Heathrow
$607

momondo Fare Finder

 
Customize your flight search to find flights from London Heathrow Airport 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 June 25, 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Fri 10/30

9:30 am-10:53 pm

2 stops20h 23m

Ontario

Mon 11/2

6:46 am-7:55 am

1 stop17h 09m

$553

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 7/8

7:25 am-10:51 pm

2 stops23h 26m

Ontario

Mon 7/13

6:10 am-6:45 am

1 stop16h 35m

$554

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Sat 8/29

7:30 am-6:16 pm

2 stops18h 46m

Ontario

Wed 9/2

1:18 pm-8:40 pm

2 stops23h 22m

$555

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Thu 11/19

7:30 am-8:56 pm

2 stops21h 26m

Ontario

Thu 12/3

1:00 pm-9:40 am

1 stop12h 40m

$556

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Thu 7/9

1:40 pm-9:55 pm

1 stop16h 15m

Ontario

Sat 7/25

4:20 pm-2:10 pm

1 stop13h 50m

$584

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 7/8

9:30 am-10:51 pm

2 stops21h 21m

Ontario

Mon 7/13

1:18 pm-9:40 am

1 stop12h 22m

$586

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Thu 7/9

1:40 pm-9:55 pm

1 stop16h 15m

Ontario

Wed 7/15

1:18 pm-12:35 pm

1 stop15h 17m

$587
Quickest round-trip

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Fri 9/25

11:25 am-8:58 pm

1 stop17h 33m

Ontario

Wed 9/30

1:24 pm-9:40 am

1 stop12h 16m

$588

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 9/23

9:30 am-12:46 pm

2 stops35h 16m

Ontario

Sun 9/27

5:00 am-6:30 am

2 stops17h 30m

$592

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 9/23

9:30 am-12:46 pm

2 stops35h 16m

Ontario

Sun 9/27

5:00 am-6:30 am

2 stops17h 30m

$593

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Los Angeles from

How to get the cheapest flight ticket from London Heathrow Airport 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 typical price of a round-trip flight between London Heathrow Airport and Ontario?

What is the cheapest month to fly to Ontario?

In general, February is the cheapest month to fly from London Heathrow Airport to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $534. If you aren’t able to travel during the month of February, then book flights to Ontario from London Heathrow Airport during January instead. Flights to Ontario in January, while not as cheap as those in February, still average around $553.

Can stopping save me money on London Heathrow Airport to Ontario flights?

You could potentially save up to 5% on your flight if you consider stops on a London Heathrow Airport to Ontario flight.

When to book flights from London Heathrow Airport to Ontario

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

Cheap London Heathrow Airport to Ontario (LHR to ONT) flight deals and tips

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

Fastest flight time

13h 52m

Direct flights

None
The fastest flight from London Heathrow Airport to Ontario takes 13h 52m
There are no direct flights from London Heathrow Airport to Ontario. There are no popular flight routes from London Heathrow Airport to Ontario.
Search flight deals

Frequently asked questions about flying from London Heathrow Airport to Ontario

  • How far is London Heathrow to Ontario by plane?

    London Heathrow and Ontario are 5408.1 mi apart from one another. 13h 52m is a normal flight duration for this route.

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

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

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

    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 Heathrow Airport to Ontario Airport.

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

    The required travel and health documents for your Ontario Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ontario Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from London to Ontario. Millions of users trust and use momondo every year so you are in good hands.

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

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

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

Once all potential London to Ontario 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 Ontario right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Ontario from London. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices 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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 7/25
Sat 8/1
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States