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Find Flight Deals 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 Mar 20 2015 Return: Mon Apr 6 2015 Trip spans 18 days
US Airways
US Airways
LHR
7:40a
ONT
2:56a
19h 16m
2 stops
ONT
2:30a
LHR
9:00p
18h 30m
2 stops
Depart: Sat Feb 28 2015 Return: Thu Mar 12 2015 Trip spans 12 days
US Airways
US Airways
LHR
6:40a
ONT
12:11a
17h 31m
2 stops
ONT
2:30a
LHR
10:25p
19h 55m
2 stops
Depart: Wed Feb 18 2015 Return: Wed Feb 25 2015 Trip spans 8 days
American Airlines
American Airlines
LHR
6:15a
ONT
9:53p
15h 38m
1 stop
ONT
9:55a
LHR
10:30p
12h 35m
1 stop
Depart: Mon Mar 16 2015 Return: Tue Mar 31 2015 Trip spans 16 days
American Airlines
American Airlines
LHR
9:30a
ONT
2:16a
16h 46m
1 stop
ONT
8:35a
LHR
1:25a
16h 50m
1 stop
Depart: Tue Mar 17 2015 Return: Tue Mar 31 2015 Trip spans 15 days
American Airlines
American Airlines
LHR
6:45a
ONT
9:53p
15h 08m
1 stop
ONT
8:35a
LHR
1:25a
16h 50m
1 stop
Depart: Thu Feb 12 2015 Return: Wed Feb 18 2015 Trip spans 7 days
United
United
LHR
6:40a
ONT
10:46p
16h 06m
1 stop
ONT
2:01a
LHR
5:55p
15h 54m
1 stop
Depart: Mon Feb 16 2015 Return: Tue Feb 24 2015 Trip spans 9 days
United
United
LHR
6:40a
ONT
10:46p
16h 06m
1 stop
ONT
2:01a
LHR
5:55p
15h 54m
1 stop
Depart: Tue Feb 17 2015 Return: Tue Feb 24 2015 Trip spans 8 days
United
United
LHR
6:40a
ONT
10:46p
16h 06m
1 stop
ONT
2:01a
LHR
5:55p
15h 54m
1 stop
Depart: Thu Feb 19 2015 Return: Tue Feb 24 2015 Trip spans 6 days
United
United
LHR
6:40a
ONT
10:46p
16h 06m
1 stop
ONT
2:01a
LHR
5:55p
15h 54m
1 stop
Depart: Tue Feb 10 2015 Return: Sun Mar 1 2015 Trip spans 20 days
American Airlines
American Airlines
LHR
6:15a
ONT
9:53p
15h 38m
1 stop
ONT
7:40a
LHR
11:40p
16h 00m
1 stop
Depart: Fri Feb 13 2015 Return: Thu Feb 19 2015 Trip spans 7 days
American Airlines
American Airlines
LHR
9:50a
ONT
2:16a
16h 26m
1 stop
ONT
9:55a
LHR
10:30p
12h 35m
1 stop
Depart: Sat Feb 14 2015 Return: Wed Feb 18 2015 Trip spans 5 days
United
United
LHR
6:40a
ONT
11:10p
16h 30m
1 stop
ONT
2:01a
LHR
5:55p
15h 54m
1 stop
Depart: Fri Feb 20 2015 Return: Tue Feb 24 2015 Trip spans 5 days
United
United
LHR
6:40a
ONT
10:46p
16h 06m
1 stop
ONT
2:01a
LHR
5:55p
15h 54m
1 stop
Depart: Sat Feb 21 2015 Return: Tue Feb 24 2015 Trip spans 4 days
United
United
LHR
6:40a
ONT
11:10p
16h 30m
1 stop
ONT
2:01a
LHR
5:55p
15h 54m
1 stop
Depart: Sun Feb 15 2015 Return: Sun Feb 22 2015 Trip spans 8 days
United
United
LHR
6:40a
ONT
10:46p
16h 06m
1 stop
ONT
2:01a
LHR
5:55p
15h 54m
1 stop
Depart: Sun Feb 22 2015 Return: Sun Mar 1 2015 Trip spans 8 days
United
United
LHR
6:40a
ONT
10:46p
16h 06m
1 stop
ONT
2:01a
LHR
5:55p
15h 54m
1 stop
Depart: Wed Apr 1 2015 Return: Sat Apr 11 2015 Trip spans 11 days
$1071
Select
United
United
LHR
7:40a
ONT
11:36p
15h 56m
1 stop
ONT
3:18p
LHR
7:10p
27h 52m
1 stop
Depart: Thu Apr 2 2015 Return: Sat Apr 11 2015 Trip spans 10 days
$1075
Select
United
United
LHR
4:30a
ONT
11:36p
19h 06m
2 stops
ONT
3:18p
LHR
7:10p
27h 52m
1 stop
Depart: Sat Mar 21 2015 Return: Tue Mar 31 2015 Trip spans 11 days
$1081
Select
Delta
Delta
LHR
8:00a
ONT
1:30a
17h 30m
2 stops
ONT
6:30a
LHR
1:00a
18h 30m
1 stop
Depart: Tue Mar 31 2015 Return: Tue Apr 7 2015 Trip spans 8 days
$1098
Select
American Airlines
American Airlines
LHR
8:25a
ONT
12:00a
15h 35m
1 stop
ONT
6:47a
LHR
11:15p
16h 28m
1 stop
Change your search
Airports
Origin

London
$685
Destination

Ontario
$685