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

Dates flexible? Here are the best fares found in the past 48 hours...

Book cheap flights from London to Ontario

(Round-trip)
Depart: Fri Nov 20 2015 Return: Sat Nov 28 2015 Trip spans 9 days
US Airways
US Airways
LHR
6:40a
ONT
12:05a
17h 25m
2 stops
ONT
5:00a
LHR
8:35p
15h 35m
2 stops
Depart: Mon Nov 16 2015 Return: Mon Nov 30 2015 Trip spans 15 days
US Airways
US Airways
LHR
3:20a
ONT
12:05a
20h 45m
2 stops
ONT
1:28a
LHR
6:05p
16h 37m
2 stops
Depart: Wed Nov 18 2015 Return: Mon Nov 30 2015 Trip spans 13 days
US Airways
US Airways
LHR
3:20a
ONT
12:05a
20h 45m
3 stops
ONT
1:28a
LHR
6:05p
16h 37m
2 stops
Depart: Wed Jun 17 2015 Return: Thu Jun 25 2015 Trip spans 9 days
US Airways
US Airways
LHR
6:15a
ONT
12:55a
18h 40m
2 stops
ONT
5:45p
LHR
10:10a
16h 25m
2 stops
Depart: Mon Jun 15 2015 Return: Mon Jul 6 2015 Trip spans 22 days
American Airlines
American Airlines
LHR
8:25a
ONT
11:49p
15h 24m
1 stop
ONT
10:15a
LHR
1:15a
15h 00m
1 stop
Depart: Tue Jun 2 2015 Return: Tue Jun 9 2015 Trip spans 8 days
American Airlines
American Airlines
LHR
8:25a
ONT
12:00a
15h 35m
1 stop
ONT
10:15a
LHR
1:15a
15h 00m
1 stop
Depart: Wed Jun 3 2015 Return: Wed Jun 10 2015 Trip spans 8 days
American Airlines
American Airlines
LHR
8:25a
ONT
12:00a
15h 35m
1 stop
ONT
10:15a
LHR
1:15a
15h 00m
1 stop
Depart: Wed Jun 10 2015 Return: Wed Jun 24 2015 Trip spans 15 days
American Airlines
American Airlines
LHR
8:25a
ONT
11:49p
15h 24m
1 stop
ONT
6:55a
LHR
11:15p
16h 20m
1 stop
Depart: Thu Jun 11 2015 Return: Wed Jun 24 2015 Trip spans 14 days
American Airlines
American Airlines
LHR
11:15a
ONT
2:58a
15h 43m
1 stop
ONT
6:55a
LHR
11:15p
16h 20m
1 stop
Depart: Tue Jun 16 2015 Return: Wed Jun 24 2015 Trip spans 9 days
American Airlines
American Airlines
LHR
8:25a
ONT
11:49p
15h 24m
1 stop
ONT
6:55a
LHR
1:15a
18h 20m
1 stop
Depart: Sat Jun 13 2015 Return: Mon Jul 6 2015 Trip spans 24 days
Delta
Delta
LHR
9:05a
ONT
2:40a
17h 35m
2 stops
ONT
2:15a
LHR
7:50p
17h 35m
2 stops
Depart: Fri Jun 12 2015 Return: Wed Jun 24 2015 Trip spans 13 days
American Airlines
American Airlines
LHR
8:25a
ONT
2:58a
18h 33m
1 stop
ONT
10:15a
LHR
1:15a
15h 00m
1 stop
Depart: Tue Oct 6 2015 Return: Thu Oct 15 2015 Trip spans 10 days
US Airways
US Airways
LHR
6:15a
ONT
1:05a
18h 50m
2 stops
ONT
6:00a
LHR
9:00p
15h 00m
2 stops
Depart: Wed Oct 7 2015 Return: Thu Oct 15 2015 Trip spans 9 days
US Airways
US Airways
LHR
6:15a
ONT
1:05a
18h 50m
2 stops
ONT
6:00a
LHR
9:00p
15h 00m
2 stops
Depart: Sat Nov 21 2015 Return: Sat Nov 28 2015 Trip spans 8 days
US Airways
US Airways
LHR
3:20a
ONT
12:05a
20h 45m
2 stops
ONT
5:00a
LHR
8:35p
15h 35m
2 stops
Depart: Fri May 29 2015 Return: Mon Jul 27 2015 Trip spans 60 days
KLM Royal Dutch
KLM Royal Dutch
LHR
9:05a
ONT
3:20a
18h 15m
1 stop
ONT
6:15a
LHR
10:40p
16h 25m
2 stops
Depart: Tue Jun 30 2015 Return: Sun Jul 5 2015 Trip spans 6 days
$1062
Select
Aeromexico
Aeromexico
LHR
6:35p
ONT
3:21a
32h 46m
1 stop
ONT
8:35p
LHR
4:05a
31h 30m
2 stops
Depart: Wed Nov 4 2015 Return: Mon Nov 9 2015 Trip spans 6 days
$1066
Select
United
United
LHR
5:25a
ONT
11:00p
17h 35m
2 stops
ONT
12:20p
LHR
1:05a
12h 45m
1 stop
Depart: Thu Jun 4 2015 Return: Tue Jun 9 2015 Trip spans 6 days
$1070
Select
Air France
Air France
LHR
2:40a
ONT
7:52p
17h 12m
2 stops
ONT
6:15a
LHR
10:40p
16h 25m
2 stops
Depart: Thu Jun 18 2015 Return: Wed Jul 1 2015 Trip spans 14 days
$1105
Select
British Airways
British Airways
LHR
8:25a
ONT
2:58a
18h 33m
1 stop
ONT
6:55a
LHR
9:15p
14h 20m
1 stop
Airports
Origin

London
$724
Destination

Ontario
$724