Find Deals on Flights from London Heathrow to Ontario (LHR - ONT)

Depart
Return
1 adult
Adults
18-64
Seniors
65+
Youths
12-17
Children
2-11
Seat Infants
under 2
Lap Infants
under 2
The price shown for each flight will be the average for all passengers including any infants.
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Book cheap flights from London Heathrow to Ontario

(Round-trip)
Depart: Thu Mar 10 2016 Return: Wed Mar 23 2016 Trip spans 13 days
British Airways
British Airways
LHR
ONT
32h 45m
2 stops
ONT
LHR
15h 38m
1 stop
Depart: Sun Feb 21 2016 Return: Tue Mar 1 2016 Trip spans 10 days
British Airways
British Airways
LHR
ONT
20h 40m
2 stops
ONT
LHR
19h 50m
2 stops
Depart: Sat Feb 27 2016 Return: Sun Feb 28 2016 Trip spans 2 days
American Airlines
American Airlines
LHR
ONT
25h 12m
2 stops
ONT
LHR
17h 00m
1 stop
Depart: Wed Jun 8 2016 Return: Tue Jun 28 2016 Trip spans 21 days
American Airlines
American Airlines
LHR
ONT
15h 00m
1 stop
ONT
LHR
14h 55m
2 stops
Depart: Sun Apr 3 2016 Return: Mon Apr 11 2016 Trip spans 9 days
American Airlines
American Airlines
LHR
ONT
16h 02m
1 stop
ONT
LHR
13h 50m
1 stop
Depart: Fri May 13 2016 Return: Sun May 15 2016 Trip spans 3 days
American Airlines
American Airlines
LHR
ONT
15h 50m
1 stop
ONT
LHR
14h 55m
2 stops
Depart: Wed Aug 3 2016 Return: Mon Aug 29 2016 Trip spans 27 days
$1529
Select
American Airlines
American Airlines
LHR
ONT
15h 00m
1 stop
ONT
LHR
14h 55m
2 stops
Depart: Fri Jul 1 2016 Return: Mon Jul 18 2016 Trip spans 18 days
$1624
Select
American Airlines
American Airlines
LHR
ONT
17h 08m
1 stop
ONT
LHR
12h 44m
1 stop
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

We make every attempt to get accurate prices, however, prices are not guaranteed.

Here's why:

We’re not the seller
At KAYAK we don’t set prices, so it’s not possible for us to guarantee what other companies are selling.

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Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we don't guarantee prices we find.

Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find on occasion that certain prices are no longer available.

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Airports
Origin

London
$603
Destination

Ontario
$603