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

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 Ontario to London Heathrow

(Round-trip)
Depart: Tue Mar 13 2018 Return: Tue Mar 27 2018 Trip spans 15 days
Multiple Airlines
Multiple Airlines
ONT
LHR
16h 45m
1 stop
LHR
ONT
14h 50m
1 stop
Depart: Mon Jan 15 2018 Return: Sat Feb 3 2018 Trip spans 20 days
United
United
ONT
LHR
17h 47m
1 stop
LHR
ONT
20h 11m
2 stops
Depart: Wed Mar 21 2018 Return: Wed Mar 28 2018 Trip spans 8 days
British Airways
British Airways
ONT
LHR
19h 28m
1 stop
LHR
ONT
21h 30m
2 stops
Depart: Wed Apr 25 2018 Return: Tue May 8 2018 Trip spans 14 days
Virgin Atlantic
Virgin Atlantic
ONT
LHR
20h 00m
1 stop
LHR
ONT
21h 16m
1 stop
Depart: Fri Dec 1 2017 Return: Sun Dec 3 2017 Trip spans 3 days
KLM
KLM
ONT
LHR
16h 55m
2 stops
LHR
ONT
19h 25m
2 stops
Depart: Tue Feb 6 2018 Return: Tue Feb 13 2018 Trip spans 8 days
United
United
ONT
LHR
17h 47m
1 stop
LHR
ONT
23h 16m
2 stops
Depart: Wed Jan 31 2018 Return: Thu Feb 15 2018 Trip spans 16 days
British Airways
British Airways
ONT
LHR
19h 25m
1 stop
LHR
ONT
16h 58m
1 stop
Depart: Sat Apr 21 2018 Return: Mon Apr 30 2018 Trip spans 10 days
KLM
KLM
ONT
LHR
21h 10m
2 stops
LHR
ONT
21h 01m
2 stops
Depart: Thu Nov 9 2017 Return: Fri Nov 17 2017 Trip spans 9 days
Multiple Airlines
Multiple Airlines
ONT
LHR
22h 50m
1 stop
LHR
ONT
22h 12m
1 stop
Depart: Mon Feb 12 2018 Return: Thu Feb 22 2018 Trip spans 11 days
British Airways
British Airways
ONT
LHR
18h 15m
1 stop
LHR
ONT
17h 40m
1 stop
Depart: Sat Apr 28 2018 Return: Mon May 7 2018 Trip spans 10 days
KLM
KLM
ONT
LHR
21h 10m
2 stops
LHR
ONT
20h 11m
2 stops
Depart: Tue Feb 13 2018 Return: Thu Feb 22 2018 Trip spans 10 days
British Airways
British Airways
ONT
LHR
17h 25m
1 stop
LHR
ONT
15h 30m
1 stop
Depart: Sun Apr 15 2018 Return: Mon Apr 23 2018 Trip spans 9 days
KLM
KLM
ONT
LHR
23h 15m
2 stops
LHR
ONT
20h 06m
2 stops
Depart: Wed Feb 14 2018 Return: Thu Feb 22 2018 Trip spans 9 days
British Airways
British Airways
ONT
LHR
14h 35m
1 stop
LHR
ONT
15h 30m
1 stop
Depart: Wed Apr 18 2018 Return: Wed Apr 25 2018 Trip spans 8 days
KLM
KLM
ONT
LHR
23h 15m
2 stops
LHR
ONT
20h 11m
2 stops
Depart: Thu Feb 15 2018 Return: Thu Feb 22 2018 Trip spans 8 days
British Airways
British Airways
ONT
LHR
17h 21m
1 stop
LHR
ONT
20h 58m
1 stop
Depart: Sun Apr 22 2018 Return: Mon Apr 30 2018 Trip spans 9 days
KLM
KLM
ONT
LHR
19h 30m
2 stops
LHR
ONT
17h 46m
2 stops
Depart: Tue Feb 20 2018 Return: Sat Mar 3 2018 Trip spans 12 days
British Airways
British Airways
ONT
LHR
14h 58m
1 stop
LHR
ONT
17h 40m
1 stop
Depart: Wed Apr 25 2018 Return: Wed May 2 2018 Trip spans 8 days
KLM
KLM
ONT
LHR
25h 05m
2 stops
LHR
ONT
20h 11m
2 stops
Depart: Wed Feb 21 2018 Return: Sat Mar 3 2018 Trip spans 11 days
British Airways
British Airways
ONT
LHR
14h 58m
1 stop
LHR
ONT
15h 30m
1 stop
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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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
$624
Destination

London
$624