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

Depart
Return
1 adult
Adults
18-64
Seniors
65+
Youths
12-17
Children
2-11
Seat Infants
under 2
Lap Infants
under 2
Students
under 26
The price shown for each flight will be the average for all passengers including any infants.
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Book cheap flights from Ontario to London

(Round-trip)
Depart: Wed Oct 26 2016 Return: Thu Nov 3 2016 Trip spans 9 days
Delta
Delta
ONT
LGW
15h 58m
2 stops
LGW
ONT
19h 54m
2 stops
Depart: Thu Dec 15 2016 Return: Thu Dec 29 2016 Trip spans 15 days
Virgin Atlantic
Virgin Atlantic
ONT
LHR
13h 05m
1 stop
LHR
ONT
19h 10m
1 stop
Depart: Fri Jan 20 2017 Return: Sun Jan 22 2017 Trip spans 3 days
British Airways
British Airways
ONT
LHR
12h 43m
1 stop
LHR
ONT
20h 25m
2 stops
Depart: Wed Dec 14 2016 Return: Wed Dec 28 2016 Trip spans 15 days
Major Airline
Major Airline
ONT
LHR
33h 00m
2 stops
LHR
ONT
36h 38m
2 stops
Depart: Thu Nov 24 2016 Return: Tue Dec 6 2016 Trip spans 13 days
American Airlines
American Airlines
ONT
LGW
17h 15m
2 stops
LGW
ONT
26h 38m
2 stops
Depart: Sat Nov 19 2016 Return: Mon Nov 28 2016 Trip spans 10 days
Delta
Delta
ONT
LGW
19h 00m
2 stops
LGW
ONT
20h 05m
2 stops
Depart: Thu Nov 17 2016 Return: Sat Nov 26 2016 Trip spans 10 days
Virgin Atlantic
Virgin Atlantic
ONT
LHR
12h 59m
1 stop
LHR
ONT
19h 35m
1 stop
Depart: Fri Oct 28 2016 Return: Sun Oct 30 2016 Trip spans 3 days
Delta
Delta
ONT
LHR
21h 40m
2 stops
LHR
ONT
18h 59m
2 stops
Depart: Mon Dec 19 2016 Return: Fri Jan 13 2017 Trip spans 26 days
Major Airline
Major Airline
ONT
LGW
21h 15m
2 stops
LGW
ONT
29h 24m
2 stops
Depart: Sat Nov 26 2016 Return: Sat Dec 3 2016 Trip spans 8 days
Virgin Atlantic
Virgin Atlantic
ONT
LHR
12h 49m
1 stop
LHR
ONT
19h 12m
1 stop
Depart: Thu Mar 16 2017 Return: Tue Mar 28 2017 Trip spans 13 days
British Airways
British Airways
ONT
LHR
19h 28m
1 stop
LHR
ONT
15h 50m
1 stop
Depart: Mon Jan 23 2017 Return: Tue Jan 31 2017 Trip spans 9 days
American Airlines
American Airlines
ONT
LGW
17h 02m
2 stops
LGW
ONT
26h 31m
2 stops
Depart: Sat Oct 29 2016 Return: Mon Oct 31 2016 Trip spans 3 days
Delta
Delta
ONT
LHR
17h 25m
2 stops
LHR
ONT
21h 09m
2 stops
Depart: Mon Dec 26 2016 Return: Thu Jan 5 2017 Trip spans 11 days
Virgin Atlantic
Virgin Atlantic
ONT
LHR
13h 05m
1 stop
LHR
ONT
19h 10m
1 stop
Depart: Thu Jan 5 2017 Return: Thu Jan 12 2017 Trip spans 8 days
British Airways
British Airways
ONT
LHR
13h 13m
1 stop
LHR
ONT
15h 15m
1 stop
Depart: Wed Feb 1 2017 Return: Tue Feb 28 2017 Trip spans 28 days
American Airlines
American Airlines
ONT
LGW
16h 56m
2 stops
LGW
ONT
18h 28m
2 stops
Depart: Tue Nov 1 2016 Return: Wed Nov 16 2016 Trip spans 16 days
Delta
Delta
ONT
LHR
18h 45m
1 stop
LHR
ONT
14h 20m
1 stop
Depart: Sat Feb 25 2017 Return: Sat Mar 4 2017 Trip spans 8 days
Virgin Atlantic
Virgin Atlantic
ONT
LHR
16h 20m
1 stop
LHR
ONT
17h 38m
1 stop
Depart: Sun Jan 1 2017 Return: Sun Jan 15 2017 Trip spans 15 days
British Airways
British Airways
ONT
LHR
14h 55m
1 stop
LHR
ONT
15h 40m
1 stop
Depart: Sat Nov 5 2016 Return: Wed Nov 16 2016 Trip spans 12 days
Delta
Delta
ONT
LHR
18h 45m
1 stop
LHR
ONT
14h 20m
1 stop
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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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.

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Airports
Origin

Ontario
$673
Destination

London
only $687
only $673