Cheap flights from Ontario to London from $553

Round-trip
1 adult
Economy
From?
To?
Tue 6/28
Tue 7/5

Deals available from 900+ travel sites.

Flight information for Ontario to London
(ONT to LON)

Find info about flight duration, direct flights, and airports for your flight from Ontario to London

Best Price Found

$553

Fastest flight time

12h 20m

Direct flights

None

Airports in London

6 airports
The best one-way flight to London from Ontario in the past 72 hours is $553. The best round-trip flight deal from Ontario to London found on momondo in the last 72 hours is $832.
The fastest flight from Ontario to London takes 12h 20m
There are no direct flights from Ontario to London. Popular non-direct routes for this connection are Ontario Airport - London Gatwick Airport, Ontario Airport - London Heathrow Airport and Ontario Airport - London City Airport.
There are 6 airports near London: London City (LCY), London Heathrow (LHR), London Luton (LTN), London Stansted (STN), London Gatwick (LGW), London Southend (SEN)

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 from Ontario to London?

February

The cheapest time of year to fly to London from Ontario is February. Most expensive is June

What is the cheapest day to depart Ontario for London?

Tuesday

The cheapest day of the week is typically Tuesday. The most expensive is typically Friday

When is the cheapest time to fly from Ontario to London?

in the morning

Ontario to London flights are approximately 13% more expensive in the afternoon than in the morning

What is the cheapest airline that flies to London from Ontario?

Air France

Air France, American Airlines, and British Airways are the most popular carriers operating from Ontario to London

What is the cheapest Ontario to London flight route?

Ontario - London Gatwick

Fly from Ontario to London Gatwick for the best Ontario - London flight prices

How far in advance should you book Ontario to London flights?

42 days before

The cheapest time to buy a flight from Ontario to London is approximately 42 days to departure

If you are looking to fly from Ontario to London, you are most likely going to fly from Ontario Airport to London Heathrow Airport, the most popular airports on that route. If you are looking for alternate airports to fly out of when traveling to London, you can try flying out of Los Angeles Airport (in Los Angeles), Santa Ana J. Wayne/Orange Cnty Airport (in Santa Ana), or Long Beach Municipal Airport (in Long Beach). If you are looking for alternate airports to fly into when traveling from Ontario, you can try flying into London Gatwick Airport (in London), London City Airport (in London), or London Luton Airport (in 15). In June, $415 is typically the cheapest round trip price you’ll find from Ontario to London which you can find when you fly LAX — STN.

Los Angeles Airport (LAX) to London Heathrow Airport (LHR)$464
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Los Angeles Airport (LAX) to London Gatwick Airport (LGW)$494
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Los Angeles Airport (LAX) to London City Airport (LCY)$810
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Ontario Airport (ONT) to London Heathrow Airport (LHR)$832
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Santa Ana J. Wayne/Orange Cnty Airport (SNA) to London Heathrow Airport (LHR)$802
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Los Angeles Airport (LAX) to London Luton Airport (LTN)$557
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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
American Airlines
Sep 27
ONT2:07 amOntario
17h 53m
2 stops
LGW8:00 pmLondon Gatwick
Oct 14
LGW8:20 amLondon Gatwick
19h 29m
2 stops
ONT3:49 amOntario
British Airways
Sep 21
ONT6:57 amOntario
12h 48m
1 stop
LHR7:45 pmLondon Heathrow
Sep 30
LHR9:15 amLondon Heathrow
14h 33m
1 stop
ONT11:48 pmOntario
Air Canada
Nov 1
ONT1:45 amOntario
18h 25m
2 stops
LHR8:10 pmLondon Heathrow
Nov 30
LHR8:25 amLondon Heathrow
38h 52m
2 stops
ONT11:17 pmOntario
KLM
Oct 18
ONT6:04 amOntario
19h 26m
1 stop
LHR1:30 amLondon Heathrow
Oct 28
LHR7:45 amLondon Heathrow
19h 59m
2 stops
ONT3:44 amOntario
Delta
Oct 18
ONT2:15 amOntario
17h 00m
2 stops
LHR7:15 pmLondon Heathrow
Oct 28
LHR4:40 amLondon Heathrow
22h 25m
2 stops
ONT3:05 amOntario
United Airlines
Sep 25
ONT9:07 amOntario
12h 33m
1 stop
LHR9:40 pmLondon Heathrow
Oct 7
LHR9:30 amLondon Heathrow
18h 45m
2 stops
ONT4:15 amOntario

Find the cheapest one-way flights from Ontario to London

If you're looking for one-way flights from Ontario to London, view some of our deals below provided by Air Canada, British Airways and KLM
Multiple Airlines
Aug 24
ONT7:25 pmOntario
29h 40m
2 stops
LHR1:05 amLondon Heathrow
British Airways
Oct 31
ONT8:24 pmOntario
23h 26m
1 stop
LHR7:50 pmLondon Heathrow
Air Canada
Oct 5
ONT2:00 amOntario
21h 50m
2 stops
LHR11:50 pmLondon Heathrow

Search last-minute flights to London from Ontario

Find and compare round-trip flight prices for your last-minute flight from Ontario to London
British Airways
Jun 29
ONT8:51 amOntario
13h 24m
1 stop
LHR10:15 pmLondon Heathrow
Sep 13
LHR6:35 amLondon Heathrow
19h 57m
2 stops
ONT2:32 amOntario
Air Canada
Jul 3
ONT9:03 amOntario
33h 27m
2 stops
LHR6:30 pmLondon Heathrow
Oct 1
LHR10:05 amLondon Heathrow
38h 32m
2 stops
ONT12:37 amOntario
KLM
Jul 3
ONT1:00 pmOntario
12h 30m
1 stop
LHR1:30 amLondon Heathrow
Oct 1
LHR11:10 amLondon Heathrow
15h 18m
1 stop
ONT2:28 amOntario
Multiple Airlines
Jun 29
ONT6:00 amOntario
17h 50m
2 stops
LGW11:50 pmLondon Gatwick
Jul 4
LGW9:10 amLondon Gatwick
17h 55m
2 stops
ONT3:05 amOntario
American Airlines
Jun 29
ONT4:00 amOntario
16h 30m
2 stops
LGW8:30 pmLondon Gatwick
Jul 6
LGW7:00 amLondon Gatwick
42h 03m
2 stops
ONT1:03 amOntario
United Airlines
Jun 29
ONT1:15 amOntario
23h 05m
1 stop
LHR12:20 amLondon Heathrow
Jul 6
LHR2:00 pmLondon Heathrow
38h 06m
3 stops
ONT4:06 amOntario

Best airlines flying from Ontario to London

Compare and see reviews for airlines that fly from Ontario to London with momondo
AirlineRatingFree CancellationPrice
Air FrancePriceFrom $453Free CancellationRating
7.9
7.7

Boarding

7.7

Comfort

8.3

Crew

7.1

Entertainment

7.4

Food

Reviews

Boarding was cumbersome

1 / 10
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United AirlinesPriceFrom $598Free CancellationRating
7.2
7.5

Boarding

7.1

Comfort

8.0

Crew

6.9

Entertainment

6.6

Food

Reviews

Treated like kings thanks

1 / 10
Search United Airlines flights
American AirlinesPriceFrom $621Free CancellationRating
7.1
7.4

Boarding

7.1

Comfort

8.0

Crew

6.8

Entertainment

6.4

Food

Reviews

Flight got delayed on arrival and departure too. No complimentary snacks provided. Waiting time more due to flight delay

1 / 10
Search American Airlines flights
British AirwaysPriceFrom $629Free CancellationRating
6.7
7.0

Boarding

6.8

Comfort

7.4

Crew

6.5

Entertainment

6.3

Food

Reviews

Big communication gap between tied up American Airlines and British airways. Customer service people does not what’s going on Provided hotel by airlines to stay due to flight miss, but food voucher did not work

1 / 10
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DeltaPriceFrom $689Free CancellationRating
7.8
7.9

Boarding

8.0

Comfort

8.3

Crew

7.7

Entertainment

7.3

Food

Reviews

One of the crew member weren’t to pleasant

1 / 10
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British Airways flights from Ontario to London

Our best British Airways deals on Ontario to London flight tickets
British Airways
Sep 21
ONT6:57 amOntario
12h 48m
1 stop
LHR7:45 pmLondon Heathrow
Sep 30
LHR9:15 amLondon Heathrow
14h 33m
1 stop
ONT11:48 pmOntario
British Airways
Oct 18
ONT6:58 amOntario
19h 32m
2 stops
LHR2:30 amLondon Heathrow
Oct 28
LHR4:35 amLondon Heathrow
23h 14m
2 stops
ONT3:49 amOntario
British Airways
Oct 18
ONT8:53 amOntario
17h 37m
2 stops
LHR2:30 amLondon Heathrow
Oct 28
LHR4:35 amLondon Heathrow
23h 14m
2 stops
ONT3:49 amOntario

KLM flights from Ontario to London

Our best KLM deals on Ontario to London flight tickets
KLM
Oct 18
ONT6:04 amOntario
19h 26m
1 stop
LHR1:30 amLondon Heathrow
Oct 28
LHR7:45 amLondon Heathrow
19h 59m
2 stops
ONT3:44 amOntario
KLM
Oct 12
ONT12:50 pmOntario
12h 40m
1 stop
LHR1:30 amLondon Heathrow
Oct 19
LHR11:10 amLondon Heathrow
15h 29m
1 stop
ONT2:39 amOntario
KLM
Oct 11
ONT8:48 amOntario
18h 12m
2 stops
LHR3:00 amLondon Heathrow
Nov 11
LHR3:40 amLondon Heathrow
22h 15m
2 stops
ONT1:55 amOntario

  • Are airlines flying from Ontario to London offering flexible cancellation due to COVID-19?

    Due to the global impact of COVID-19, some of our airline partners operating flights from Ontario to London, such as British Airways, American Airlines, and United Airlines may have put in place flexible cancellation policies. Use our site to search for all of the airlines offering this flexibility to you.

  • How far is Ontario to London by plane?

    The straight-line distance from Ontario to London is 5417.5 mi. A reasonable flight in good conditions will take 12h 20m.



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
San Francisco to London Flights
Fastest flight time10h 10m
Cheapest price$413
San Jose to London Flights
Fastest flight time10h 15m
Cheapest price$625
Santa Ana to London Flights
Fastest flight time12h 33m
Cheapest price$803
San Diego to London Flights
Fastest flight time10h 25m
Cheapest price$581
Los Angeles to London Flights
Fastest flight time12h 45m
Cheapest price$415
Oakland, California to London Flights
Fastest flight time12h 20m
Cheapest price$636
Los Angeles to Manchester Flights
Fastest flight time12h 20m
Cheapest price$463
Sacramento to London Flights
Fastest flight time13h 28m
Cheapest price$735

Similar Ontario to London flights

Flexible with your destination? Broaden your search and find flights similar to your Ontario to London route

Why use momondo?

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