Browse Origins:
Browse Destinations:

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: Tue Mar 31 2015 Return: Thu Apr 2 2015 Trip spans 3 days
Air France
Air France
ONT
2:00a
LHR
1:00a
23h 00m
1 stop
LHR
2:55a
ONT
3:21a
24h 26m
2 stops
Depart: Mon Mar 16 2015 Return: Wed Mar 18 2015 Trip spans 3 days
United
United
ONT
7:45a
LHR
3:05a
19h 20m
1 stop
LHR
9:35a
ONT
2:59a
17h 24m
1 stop
Depart: Tue Mar 17 2015 Return: Wed Mar 18 2015 Trip spans 2 days
Air France
Air France
ONT
2:00a
LHR
10:00p
20h 00m
2 stops
LHR
8:00a
ONT
1:34a
17h 34m
2 stops
Depart: Wed Mar 25 2015 Return: Mon Apr 27 2015 Trip spans 34 days
British Airways
British Airways
ONT
10:55a
LHR
2:00a
15h 05m
1 stop
LHR
11:15a
ONT
3:20a
16h 05m
1 stop
Depart: Sat Mar 7 2015 Return: Mon Mar 23 2015 Trip spans 16 days
United
United
ONT
3:22p
LHR
2:05a
33h 43m
1 stop
LHR
5:20a
ONT
10:36p
17h 16m
1 stop
Depart: Thu Mar 26 2015 Return: Mon Apr 27 2015 Trip spans 33 days
Air France
Air France
ONT
6:05a
LHR
12:05a
18h 00m
2 stops
LHR
9:05a
ONT
3:21a
18h 16m
1 stop
Depart: Mon Mar 30 2015 Return: Wed Apr 15 2015 Trip spans 17 days
Air France
Air France
ONT
6:05a
LHR
11:05p
17h 00m
2 stops
LHR
9:05a
ONT
3:21a
18h 16m
1 stop
Depart: Fri Mar 20 2015 Return: Mon Apr 6 2015 Trip spans 18 days
Air France
Air France
ONT
2:00a
LHR
10:00p
20h 00m
2 stops
LHR
9:05a
ONT
3:21a
18h 16m
1 stop
Depart: Sun Mar 29 2015 Return: Mon Apr 27 2015 Trip spans 30 days
British Airways
British Airways
ONT
3:40a
LHR
9:15p
17h 35m
1 stop
LHR
7:50a
ONT
3:20a
19h 30m
1 stop
Depart: Mon Mar 23 2015 Return: Wed Apr 8 2015 Trip spans 17 days
Air France
Air France
ONT
6:05a
LHR
1:25a
19h 20m
2 stops
LHR
9:05a
ONT
3:21a
18h 16m
1 stop
Depart: Sun Mar 8 2015 Return: Thu Mar 19 2015 Trip spans 12 days
American Airlines
American Airlines
ONT
10:55a
LHR
12:30a
13h 35m
1 stop
LHR
7:40a
ONT
2:56a
19h 16m
2 stops
Depart: Mon Mar 9 2015 Return: Thu Mar 12 2015 Trip spans 4 days
US Airways
US Airways
ONT
2:30a
LHR
10:25p
19h 55m
2 stops
LHR
9:20a
ONT
2:56a
17h 36m
2 stops
Depart: Tue Mar 10 2015 Return: Thu Mar 19 2015 Trip spans 10 days
US Airways
US Airways
ONT
2:30a
LHR
10:25p
19h 55m
2 stops
LHR
7:40a
ONT
2:56a
19h 16m
2 stops
Depart: Sun Mar 15 2015 Return: Thu Mar 19 2015 Trip spans 5 days
American Airlines
American Airlines
ONT
3:15a
LHR
12:30a
21h 15m
1 stop
LHR
9:20a
ONT
2:56a
17h 36m
2 stops
Depart: Thu Mar 12 2015 Return: Mon Mar 16 2015 Trip spans 5 days
Delta
Delta
ONT
6:30a
LHR
1:25a
18h 55m
1 stop
LHR
8:50a
ONT
1:34a
16h 44m
2 stops
Depart: Thu Mar 5 2015 Return: Mon Mar 9 2015 Trip spans 4 days
United
United
ONT
4:28a
LHR
1:05a
20h 37m
1 stop
LHR
9:35a
ONT
2:59a
17h 24m
1 stop
Depart: Wed Mar 11 2015 Return: Mon Mar 16 2015 Trip spans 6 days
British Airways
British Airways
ONT
10:55a
LHR
12:30a
13h 35m
1 stop
LHR
9:30a
ONT
2:16a
16h 46m
1 stop
Depart: Tue Sep 22 2015 Return: Thu Oct 1 2015 Trip spans 10 days
$1191
Select
Multiple Airlines
Multiple Airlines
ONT
6:30a
LHR
11:45p
17h 15m
2 stops
LHR
5:10p
ONT
8:20p
51h 10m
2 stops
Depart: Tue May 19 2015 Return: Thu May 28 2015 Trip spans 10 days
$1283
Select
KLM Royal Dutch
KLM Royal Dutch
ONT
2:00a
LHR
1:00a
23h 00m
1 stop
LHR
9:05a
ONT
3:20a
18h 15m
1 stop
Depart: Thu Jun 11 2015 Return: Wed Jul 15 2015 Trip spans 35 days
$1442
Select
Air Canada
Air Canada
ONT
1:20a
LHR
11:40p
22h 20m
2 stops
LHR
6:05a
ONT
3:59a
21h 54m
2 stops
Airports
Origin

Ontario
$770
Destination

London
$770