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
29 Jan
11:00 pm
ONT
Ontario airport
18h 20m
1 Stop
LHR
1:20 am
+2
London Heathrow airport
British Airways
05 Feb
7:20 am
LHR
London Heathrow airport
24h 38m
2 Stops
ONT
11:58 pm
Ontario airport
$362
British Airways
British Airways
24 Jan
4:45 am
ONT
Ontario airport
14h 50m
1 Stop
LHR
3:35 am
+1
London Heathrow airport
British Airways
28 Jan
6:45 pm
LHR
London Heathrow airport
31h 26m
2 Stops
ONT
6:11 pm
+1
Ontario airport
$364
American Airlines
American Airlines
15 Jan
6:48 am
ONT
Ontario airport
12h 47m
1 Stop
LHR
3:35 am
+1
London Heathrow airport
American Airlines
21 Jan
9:30 am
LHR
London Heathrow airport
13h 57m
1 Stop
ONT
3:27 pm
Ontario airport
$367
American Airlines
American Airlines
15 Jan
6:48 am
ONT
Ontario airport
12h 47m
1 Stop
LHR
3:35 am
+1
London Heathrow airport
American Airlines
21 Jan
9:30 am
LHR
London Heathrow airport
13h 57m
1 Stop
ONT
3:27 pm
Ontario airport
$367
American Airlines
American Airlines
30 Mar
9:54 am
ONT
Ontario airport
12h 46m
1 Stop
LHR
6:40 am
+1
London Heathrow airport
American Airlines
07 Apr
3:45 pm
LHR
London Heathrow airport
14h 58m
1 Stop
ONT
10:43 pm
Ontario airport
$379
Finnair
Finnair
18 Dec
12:00 am
ONT
Ontario airport
14h 50m
1 Stop
LHR
10:50 pm
London Heathrow airport
Finnair
26 Dec
9:30 am
LHR
London Heathrow airport
13h 58m
1 Stop
ONT
3:28 pm
Ontario airport
$975

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 20% more expensive in the afternoon than in the evening
What is the cheapest airline that flies to London?
Endeavor Airlines
Endeavor Airlines, Brussels Airlines, and Austrian Airlines 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?
40 days before
The cheapest time to buy a flight from Ontario to London is approximately 40 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 42m The fastest flight from Ontario to London takes 12h 42m.
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
$223
Palm Springs to London
Fastest flight time
13h 35m
Cheapest price
$396
Los Angeles to Birmingham
Fastest flight time
15h 55m
Cheapest price
$506
San Diego to London
Fastest flight time
10h 30m
Cheapest price
$524
San Diego to Birmingham
Fastest flight time
17h 50m
Cheapest price
$1,014
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.