Cheap flights from Ontario to London

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Easily compare round-trip flights from Ontario to London

Below you can see the best fares for your round-trip flight route over the next three months. All fares were found on momondo this week. Browse the quickest and cheapest flights from Ontario to London by changing tabs
Quickest
Cheapest
British Airways
British Airways
06 Nov
ONT
11:55 pm
Ontario airport
17h 25m
1 Stop
1:20 am
+2
LHR
London Heathrow airport
British Airways
19 Nov
LHR
7:20 am
London Heathrow airport
20h 54m
2 Stops
8:14 pm
ONT
Ontario airport
361 USD
British Airways
British Airways
28 Nov
ONT
10:04 pm
Ontario airport
17h 51m
1 Stop
11:55 pm
+1
LHR
London Heathrow airport
British Airways
09 Dec
LHR
7:20 am
London Heathrow airport
18h 36m
2 Stops
5:56 pm
ONT
Ontario airport
361 USD
British Airways
British Airways
15 Jan
ONT
10:00 pm
Ontario airport
19h 20m
1 Stop
1:20 am
+2
LHR
London Heathrow airport
British Airways
21 Jan
LHR
7:20 am
London Heathrow airport
21h 15m
2 Stops
8:35 pm
ONT
Ontario airport
361 USD
American Airlines
American Airlines
10 Dec
ONT
4:17 am
Ontario airport
13h 23m
1 Stop
1:40 am
+1
LHR
London Heathrow airport
American Airlines
09 Jan
LHR
9:30 am
London Heathrow airport
13h 57m
1 Stop
3:27 pm
ONT
Ontario airport
368 USD
American Airlines
American Airlines
24 Jan
ONT
4:13 am
Ontario airport
13h 27m
1 Stop
1:40 am
+1
LHR
London Heathrow airport
American Airlines
28 Jan
LHR
9:30 am
London Heathrow airport
13h 57m
1 Stop
3:27 pm
ONT
Ontario airport
367 USD
American Airlines
American Airlines
14 Nov
ONT
4:17 am
Ontario airport
13h 23m
1 Stop
1:40 am
+1
LHR
London Heathrow airport
American Airlines
18 Nov
LHR
9:30 am
London Heathrow airport
14h 03m
1 Stop
3:33 pm
ONT
Ontario airport
367 USD

How to get the cheapest flight ticket from Ontario to London

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to London?
October
The cheapest time of year to fly to London from Ontario is October. Most expensive is July
What is the cheapest day to fly to London?
Tuesday
The cheapest day of the week is typically Tuesday. The most expensive is typically Friday
When is the cheapest time to fly to London?
in the evening
Ontario to London flights are approximately 16% more expensive in the afternoon than in the evening
What is the cheapest airline that flies to London?
Austrian Airlines
Austrian Airlines, Iberia, and Lufthansa are the most popular carriers operating from Ontario to London
What is the cheapest route?
Ontario - London Heathrow
Fly from Ontario to London Heathrow for the best Ontario - London flight prices
When is the cheapest time to book a flight to London?
41 days before
The cheapest time to buy a flight from Ontario to London is approximately 41 days to departure
60
Days before departure
0

Flight information for Ontario to London (LON - ONT)

Find info about flight duration, direct flights, and airports for your flight from Ontario to London
Fastest flight time 12h 40m The fastest flight from Ontario to London takes 12h 40m.
Direct flights None There are no direct flights from Ontario to London. Popular non-direct routes for this connection are Ontario - London Heathrow, Ontario - London Gatwick and Ontario - London City.
Airports in London 6 airports There are 6 airports near London: London City (LCY), London Heathrow (LHR), London Luton (LTN), London Stansted (STN), London Gatwick (LGW), London Southend (SEN)

Alternative routes for Ontario to London

Compare alternative flights to and from nearby airports and cities to discover the best prices and most convenient flight times
Los Angeles to London
Fastest flight time
10h 15m
Cheapest price
230 USD
Palm Springs to London
Fastest flight time
13h 16m
Cheapest price
355 USD
Los Angeles to Manchester
Fastest flight time
10h 25m
Cheapest price
495 USD
San Diego to London
Fastest flight time
10h 30m
Cheapest price
504 USD
Los Angeles to Birmingham
Fastest flight time
14h 35m
Cheapest price
505 USD
San Diego to Manchester
Fastest flight time
15h 15m
Cheapest price
609 USD
San Diego to Birmingham
Fastest flight time
17h 30m
Cheapest price
770 USD
View more

Flights from Ontario to:

*Flight prices to London are based on prices for economy tickets found by momondo users during searches within the last 72 hours. These prices may no longer be available.