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Find Flight Deals from Ontario to London (ONT - LON)

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

Book cheap flights from Ontario to London

(Round-trip)
Depart: Fri Apr 3 2015 Return: Sun Apr 5 2015 Trip spans 3 days
Air France
Air France
ONT
6:05a
LHR
11:05p
17h 00m
2 stops
LHR
2:40a
ONT
3:21a
24h 41m
2 stops
Depart: Mon Mar 30 2015 Return: Thu Apr 2 2015 Trip spans 4 days
United
United
ONT
6:30a
LHR
2:05a
19h 35m
1 stop
LHR
7:40a
ONT
11:36p
15h 56m
1 stop
Depart: Tue Mar 31 2015 Return: Mon Apr 6 2015 Trip spans 7 days
Delta
Delta
ONT
2:15a
LHR
12:15a
22h 00m
2 stops
LHR
8:30a
ONT
2:34a
18h 04m
2 stops
Depart: Wed Apr 1 2015 Return: Mon Apr 6 2015 Trip spans 6 days
Delta
Delta
ONT
2:15a
LHR
12:15a
22h 00m
2 stops
LHR
8:30a
ONT
2:34a
18h 04m
2 stops
Depart: Thu Apr 2 2015 Return: Mon Apr 6 2015 Trip spans 5 days
Delta
Delta
ONT
2:15a
LHR
12:15a
22h 00m
2 stops
LHR
8:30a
ONT
2:34a
18h 04m
2 stops
Depart: Sun Apr 5 2015 Return: Wed Apr 8 2015 Trip spans 4 days
Delta
Delta
ONT
2:15a
LHR
12:15a
22h 00m
2 stops
LHR
8:30a
ONT
2:46a
18h 16m
2 stops
Depart: Mon May 4 2015 Return: Wed May 6 2015 Trip spans 3 days
Air France
Air France
ONT
2:00a
LHR
1:00a
23h 00m
1 stop
LHR
2:40a
ONT
8:00p
17h 20m
2 stops
Depart: Tue May 5 2015 Return: Wed May 6 2015 Trip spans 2 days
Air France
Air France
ONT
2:00a
LHR
1:00a
23h 00m
1 stop
LHR
4:10p
ONT
8:00p
27h 50m
2 stops
Depart: Thu May 7 2015 Return: Sat May 9 2015 Trip spans 3 days
KLM Royal Dutch
KLM Royal Dutch
ONT
2:00a
LHR
1:00a
23h 00m
1 stop
LHR
2:30a
ONT
1:09a
22h 39m
2 stops
Depart: Wed Sep 2 2015 Return: Fri Sep 4 2015 Trip spans 3 days
KLM Royal Dutch
KLM Royal Dutch
ONT
6:20a
LHR
1:00a
18h 40m
2 stops
LHR
2:30a
ONT
9:39p
19h 09m
2 stops
Depart: Wed Apr 8 2015 Return: Fri Apr 10 2015 Trip spans 3 days
Air France
Air France
ONT
6:05a
LHR
7:20a
25h 15m
2 stops
LHR
9:05a
ONT
3:21a
18h 16m
1 stop
Depart: Wed May 6 2015 Return: Fri May 8 2015 Trip spans 3 days
Air France
Air France
ONT
6:05a
LHR
1:45a
19h 40m
2 stops
LHR
9:05a
ONT
3:20a
18h 15m
1 stop
Depart: Thu Apr 16 2015 Return: Fri Apr 17 2015 Trip spans 2 days
Air France
Air France
ONT
2:00a
LHR
10:30p
20h 30m
2 stops
LHR
9:05a
ONT
3:21a
18h 16m
1 stop
Depart: Sat Apr 18 2015 Return: Mon Apr 20 2015 Trip spans 3 days
Air France
Air France
ONT
2:15a
LHR
10:40p
20h 25m
2 stops
LHR
5:45a
ONT
3:21a
21h 36m
2 stops
Depart: Fri May 8 2015 Return: Tue May 12 2015 Trip spans 5 days
Air Canada
Air Canada
ONT
3:17p
LHR
9:00a
17h 43m
2 stops
LHR
6:05a
ONT
10:47p
16h 42m
2 stops
Depart: Sun Sep 6 2015 Return: Mon Sep 7 2015 Trip spans 2 days
British Airways
British Airways
ONT
2:05a
LHR
6:55p
16h 50m
1 stop
LHR
7:50a
ONT
3:08a
19h 18m
1 stop
Depart: Wed Apr 15 2015 Return: Thu Apr 16 2015 Trip spans 2 days
United
United
ONT
6:55a
LHR
9:40p
14h 45m
1 stop
LHR
7:40a
ONT
11:07p
15h 27m
1 stop
Depart: Sun Apr 26 2015 Return: Tue Apr 28 2015 Trip spans 3 days
American Airlines
American Airlines
ONT
2:30a
LHR
7:40p
17h 10m
2 stops
LHR
8:25a
ONT
12:00a
15h 35m
1 stop
Depart: Wed Aug 12 2015 Return: Tue Aug 25 2015 Trip spans 14 days
$1338
Select
Aeromexico
Aeromexico
ONT
9:05p
LHR
4:05a
31h 00m
1 stop
LHR
6:35p
ONT
3:25a
32h 50m
1 stop
Depart: Mon Jun 29 2015 Return: Fri Jul 17 2015 Trip spans 19 days
$1483
Select
US Airways
US Airways
ONT
2:00a
LHR
6:55p
16h 55m
1 stop
LHR
11:15a
ONT
3:08a
15h 53m
1 stop
Airports
Origin

Ontario
$791
Destination

London
$791