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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: Sat Mar 14 2015 Return: Sun Mar 15 2015 Trip spans 2 days
Air France
Air France
ONT
2:20a
LHR
1:25a
23h 05m
1 stop
LHR
4:10p
ONT
1:34a
33h 24m
2 stops
Depart: Wed Feb 4 2015 Return: Tue Feb 17 2015 Trip spans 14 days
Air Canada
Air Canada
ONT
12:30a
LHR
7:30a
31h 00m
2 stops
LHR
1:00p
ONT
3:08a
38h 08m
2 stops
Depart: Thu Feb 5 2015 Return: Mon Feb 16 2015 Trip spans 12 days
United
United
ONT
2:01a
LHR
8:40p
18h 39m
1 stop
LHR
6:40a
ONT
10:46p
16h 06m
1 stop
Depart: Sun Feb 8 2015 Return: Mon Feb 16 2015 Trip spans 9 days
United
United
ONT
2:01a
LHR
5:55p
15h 54m
1 stop
LHR
6:40a
ONT
10:46p
16h 06m
1 stop
Depart: Tue Feb 10 2015 Return: Mon Feb 16 2015 Trip spans 7 days
United
United
ONT
2:01a
LHR
5:55p
15h 54m
1 stop
LHR
4:20a
ONT
10:46p
18h 26m
1 stop
Depart: Wed Feb 11 2015 Return: Mon Feb 16 2015 Trip spans 6 days
United
United
ONT
2:01a
LHR
5:55p
15h 54m
1 stop
LHR
6:40a
ONT
10:46p
16h 06m
1 stop
Depart: Thu Feb 12 2015 Return: Mon Feb 16 2015 Trip spans 5 days
United
United
ONT
2:01a
LHR
5:55p
15h 54m
1 stop
LHR
6:40a
ONT
10:46p
16h 06m
1 stop
Depart: Thu Feb 26 2015 Return: Mon Mar 16 2015 Trip spans 18 days
United
United
ONT
2:01a
LHR
5:55p
15h 54m
1 stop
LHR
5:20a
ONT
10:36p
17h 16m
1 stop
Depart: Sun Mar 1 2015 Return: Wed Mar 11 2015 Trip spans 10 days
United
United
ONT
2:01a
LHR
5:55p
15h 54m
1 stop
LHR
5:20a
ONT
10:36p
17h 16m
1 stop
Depart: Mon Mar 2 2015 Return: Mon Mar 16 2015 Trip spans 14 days
United
United
ONT
2:01a
LHR
5:55p
15h 54m
1 stop
LHR
5:20a
ONT
10:36p
17h 16m
1 stop
Depart: Tue Mar 3 2015 Return: Mon Mar 9 2015 Trip spans 6 days
United
United
ONT
2:01a
LHR
5:55p
15h 54m
1 stop
LHR
5:20a
ONT
10:36p
17h 16m
1 stop
Depart: Tue Mar 10 2015 Return: Tue Mar 24 2015 Trip spans 15 days
United
United
ONT
3:00a
LHR
7:55p
16h 55m
1 stop
LHR
5:20a
ONT
10:36p
17h 16m
1 stop
Depart: Wed Mar 11 2015 Return: Mon Mar 16 2015 Trip spans 6 days
United
United
ONT
3:00a
LHR
7:55p
16h 55m
1 stop
LHR
5:20a
ONT
10:36p
17h 16m
1 stop
Depart: Sun Mar 15 2015 Return: Tue Mar 24 2015 Trip spans 10 days
United
United
ONT
3:00a
LHR
7:55p
16h 55m
1 stop
LHR
5:20a
ONT
10:36p
17h 16m
1 stop
Depart: Sun Feb 1 2015 Return: Thu Mar 5 2015 Trip spans 33 days
United
United
ONT
9:58a
LHR
1:05a
15h 07m
1 stop
LHR
4:20a
ONT
10:36p
18h 16m
1 stop
Depart: Tue Mar 17 2015 Return: Thu Mar 26 2015 Trip spans 10 days
American Airlines
American Airlines
ONT
3:15a
LHR
8:25p
17h 10m
1 stop
LHR
10:50a
ONT
2:16a
15h 26m
1 stop
Depart: Tue Mar 24 2015 Return: Tue Mar 31 2015 Trip spans 8 days
British Airways
British Airways
ONT
8:30a
LHR
2:00a
17h 30m
1 stop
LHR
7:50a
ONT
3:22a
19h 32m
1 stop
Depart: Wed May 13 2015 Return: Mon Jun 1 2015 Trip spans 20 days
$1329
Select
Multiple Airlines
Multiple Airlines
ONT
8:20a
LHR
9:40p
13h 20m
1 stop
LHR
6:05a
ONT
10:33p
16h 28m
2 stops
Depart: Sat May 16 2015 Return: Thu May 28 2015 Trip spans 13 days
$1502
Select
KLM Royal Dutch
KLM Royal Dutch
ONT
2:20a
LHR
1:00a
22h 40m
1 stop
LHR
9:05a
ONT
3:20a
18h 15m
1 stop
Depart: Mon Feb 23 2015 Return: Fri Mar 6 2015 Trip spans 12 days
$1660
Select
Delta
Delta
ONT
6:10a
LHR
10:05p
15h 55m
1 stop
LHR
2:10a
ONT
7:00p
16h 50m
2 stops
Change your search
Airports
Origin

Ontario
$863
Destination

London
$863