Find Cheap Flights from London to Ontario (LON - 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 to Ontario

(Round-trip)
Depart: Tue Dec 26 2017 Return: Mon Jan 1 2018 Trip spans 7 days
Multiple Airlines
Multiple Airlines
LHR
ONT
15h 04m
1 stop
ONT
LHR
13h 05m
1 stop
Depart: Fri Jan 26 2018 Return: Fri Feb 9 2018 Trip spans 15 days
British Airways
British Airways
LGW
ONT
34h 53m
2 stops
ONT
LGW
24h 53m
2 stops
Depart: Tue Oct 17 2017 Return: Mon Oct 23 2017 Trip spans 7 days
Virgin Atlantic
Virgin Atlantic
LHR
ONT
16h 40m
1 stop
ONT
LHR
19h 10m
1 stop
Depart: Mon Jan 22 2018 Return: Mon Feb 5 2018 Trip spans 15 days
British Airways
British Airways
LHR
ONT
17h 40m
1 stop
ONT
LHR
14h 55m
1 stop
Depart: Mon Dec 25 2017 Return: Mon Jan 15 2018 Trip spans 22 days
British Airways
British Airways
LHR
ONT
16h 58m
1 stop
ONT
LHR
18h 28m
1 stop
Depart: Wed Mar 28 2018 Return: Thu Apr 12 2018 Trip spans 16 days
Virgin Atlantic
Virgin Atlantic
LHR
ONT
16h 16m
1 stop
ONT
LHR
19h 00m
1 stop
Depart: Sat Dec 16 2017 Return: Mon Jan 1 2018 Trip spans 17 days
Multiple Airlines
Multiple Airlines
LHR
ONT
22h 23m
1 stop
ONT
LHR
33h 31m
2 stops
Depart: Sat Jan 27 2018 Return: Thu Feb 1 2018 Trip spans 6 days
British Airways
British Airways
LHR
ONT
16h 58m
1 stop
ONT
LHR
14h 58m
1 stop
Depart: Mon Oct 9 2017 Return: Tue Oct 17 2017 Trip spans 9 days
Virgin Atlantic
Virgin Atlantic
LHR
ONT
16h 29m
1 stop
ONT
LHR
19h 10m
1 stop
Depart: Fri Oct 20 2017 Return: Sun Oct 22 2017 Trip spans 3 days
Multiple Airlines
Multiple Airlines
LHR
ONT
22h 17m
1 stop
ONT
LHR
36h 05m
1 stop
Depart: Tue Nov 28 2017 Return: Tue Dec 5 2017 Trip spans 8 days
British Airways
British Airways
LHR
ONT
16h 00m
1 stop
ONT
LHR
14h 35m
1 stop
Depart: Tue Oct 3 2017 Return: Tue Oct 10 2017 Trip spans 8 days
Virgin Atlantic
Virgin Atlantic
LHR
ONT
16h 40m
1 stop
ONT
LHR
19h 10m
1 stop
Depart: Thu Nov 2 2017 Return: Sat Nov 18 2017 Trip spans 17 days
Multiple Airlines
Multiple Airlines
LHR
ONT
15h 47m
1 stop
ONT
LHR
21h 45m
1 stop
Depart: Wed Nov 29 2017 Return: Tue Dec 5 2017 Trip spans 7 days
British Airways
British Airways
LHR
ONT
17h 54m
1 stop
ONT
LHR
14h 35m
1 stop
Depart: Wed Mar 28 2018 Return: Sat Apr 14 2018 Trip spans 18 days
Virgin Atlantic
Virgin Atlantic
LHR
ONT
16h 16m
1 stop
ONT
LHR
16h 05m
1 stop
Depart: Mon Dec 25 2017 Return: Wed Jan 17 2018 Trip spans 24 days
British Airways
British Airways
LHR
ONT
16h 58m
1 stop
ONT
LHR
14h 58m
1 stop
Depart: Tue Oct 3 2017 Return: Wed Oct 11 2017 Trip spans 9 days
Virgin Atlantic
Virgin Atlantic
LHR
ONT
16h 40m
1 stop
ONT
LHR
19h 10m
1 stop
Depart: Tue Jan 9 2018 Return: Wed Jan 31 2018 Trip spans 23 days
British Airways
British Airways
LHR
ONT
17h 40m
1 stop
ONT
LHR
14h 55m
1 stop
Depart: Wed Oct 11 2017 Return: Tue Oct 17 2017 Trip spans 7 days
Virgin Atlantic
Virgin Atlantic
LHR
ONT
16h 29m
1 stop
ONT
LHR
19h 10m
1 stop
Depart: Mon Jan 8 2018 Return: Mon Jan 15 2018 Trip spans 8 days
British Airways
British Airways
LHR
ONT
17h 40m
1 stop
ONT
LHR
18h 28m
1 stop
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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Here's why:

We’re not the seller.
At KAYAK we don’t set the 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 can'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.

If you have more questions or if you have a bad price to report to us,
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Airports
Origin

London
only $556
only $592
Destination

Ontario
$556