Find Cheap Flights from Ontario to United Kingdom

Depart
Return
1 adult
Adults
18-64
Seniors
65+
Youths
12-17
Children
2-11
Seat Infants
under 2
Lap Infants
under 2
The price shown for each flight will be the average for all passengers including any infants.
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Book cheap flights from Ontario to United Kingdom

(Round-trip)
Depart: Fri Sep 29 2017 Return: Sat Oct 7 2017 Trip spans 9 days
Major Airline
Major Airline
ONT
LHR
17h 00m
2 stops
LHR
ONT
18h 53m
2 stops
Depart: Fri Oct 6 2017 Return: Fri Oct 20 2017 Trip spans 15 days
Virgin Atlantic
Virgin Atlantic
ONT
LHR
19h 00m
1 stop
LHR
ONT
16h 19m
1 stop
Depart: Wed Oct 11 2017 Return: Wed Oct 25 2017 Trip spans 15 days
Delta
Delta
ONT
LHR
19h 00m
1 stop
LHR
ONT
16h 19m
1 stop
Depart: Thu Nov 2 2017 Return: Sat Nov 11 2017 Trip spans 10 days
KLM
KLM
ONT
LHR
19h 30m
2 stops
LHR
ONT
16h 07m
2 stops
Depart: Tue Aug 15 2017 Return: Tue Aug 29 2017 Trip spans 15 days
United
United
ONT
LHR
13h 55m
1 stop
LHR
ONT
15h 29m
1 stop
Depart: Tue Sep 12 2017 Return: Wed Sep 20 2017 Trip spans 9 days
American Airlines
American Airlines
ONT
LGW
16h 21m
2 stops
LGW
ONT
17h 38m
2 stops
Depart: Thu Oct 5 2017 Return: Thu Oct 12 2017 Trip spans 8 days
Air France
Air France
ONT
SOU
23h 40m
2 stops
SOU
ONT
19h 08m
2 stops
Depart: Sat Sep 30 2017 Return: Mon Oct 9 2017 Trip spans 10 days
British Airways
British Airways
ONT
LGW
45h 55m
2 stops
LGW
ONT
28h 50m
2 stops
Depart: Tue Aug 8 2017 Return: Tue Aug 22 2017 Trip spans 15 days
Major Airline
Major Airline
ONT
MAN
15h 20m
2 stops
MAN
ONT
22h 44m
2 stops
Depart: Thu Nov 2 2017 Return: Fri Nov 17 2017 Trip spans 16 days
Delta
Delta
ONT
LHR
18h 30m
2 stops
LHR
ONT
24h 14m
2 stops
Depart: Tue Sep 12 2017 Return: Wed Sep 20 2017 Trip spans 9 days
KLM
KLM
ONT
LHR
16h 45m
2 stops
LHR
ONT
20h 14m
2 stops
Depart: Fri Sep 29 2017 Return: Mon Oct 9 2017 Trip spans 11 days
Major Airline
Major Airline
ONT
LHR
16h 50m
1 stop
LHR
ONT
18h 35m
1 stop
Depart: Wed Nov 8 2017 Return: Sat Nov 18 2017 Trip spans 11 days
United
United
ONT
LHR
13h 00m
1 stop
LHR
ONT
18h 23m
2 stops
Depart: Tue Aug 8 2017 Return: Thu Aug 24 2017 Trip spans 17 days
Delta
Delta
ONT
LHR
23h 20m
1 stop
LHR
ONT
16h 14m
1 stop
Depart: Thu Nov 23 2017 Return: Thu Dec 7 2017 Trip spans 15 days
United
United
ONT
LHR
13h 00m
1 stop
LHR
ONT
18h 23m
2 stops
Depart: Thu Nov 16 2017 Return: Tue Nov 28 2017 Trip spans 13 days
British Airways
British Airways
ONT
LGW
24h 53m
2 stops
LGW
ONT
31h 35m
2 stops
Depart: Sun Aug 13 2017 Return: Thu Aug 24 2017 Trip spans 12 days
Delta
Delta
ONT
LHR
23h 20m
1 stop
LHR
ONT
16h 14m
1 stop
Depart: Tue Aug 29 2017 Return: Tue Sep 12 2017 Trip spans 15 days
$1608
Select
Air Canada
Air Canada
ONT
MAN
19h 00m
2 stops
MAN
ONT
17h 55m
2 stops
Depart: Thu Oct 5 2017 Return: Thu Oct 12 2017 Trip spans 8 days
British Airways
British Airways
ONT
LGW
25h 28m
2 stops
LGW
ONT
34h 18m
2 stops
Depart: Sat Jul 22 2017 Return: Wed Aug 23 2017 Trip spans 33 days
Virgin Atlantic
Virgin Atlantic
ONT
LHR
16h 35m
1 stop
LHR
ONT
16h 14m
1 stop
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

We attempt to get accurate prices, however, prices are not guaranteed.

Here's why:

We’re not the seller.
At KAYAK we don’t set the prices, so it’s not possible for us to guarantee what other companies are selling.

We compile tonnes of data for you
Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we can't guarantee prices we find.

Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

If you have more questions or if you have a bad price to report to us,
please send us an email and someone from our team will get back to you promptly.

Airports
Origin

Ontario
$558
Destination

Southampton
$719
London
only $558
only $701
Manchester
$582