Cheap flights from Ontario to London from $257

1 adult
Economy
0 bags
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Sat 9/30
Sat 10/7

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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

$257

Fastest flight time

12h 05m

Direct flights

None

Airports in London

1 airport
The best one-way flight to London from Ontario in the past 72 hours is $257. The best round-trip flight deal from Ontario to London found on momondo in the last 72 hours is $592.
The fastest flight from Ontario to London takes 12h 05m
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 is 1 airport near London: London Heathrow (LHR)

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 December

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 Sunday

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

In the afternoon. Ontario to London flights are approximately 16% more expensive in the evening than in the afternoon

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

United Airlines. American Airlines, British Airways, and Delta are the most popular carriers operating from Ontario to London

What is the cheapest Ontario to London flight route?

Ontario - London Heathrow. Fly from Ontario to London Heathrow for the best Ontario - London flight prices

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

60 days before. The cheapest time to buy a flight from Ontario to London is approximately 60 days to departure

Can stopping save me money on Ontario to London flights?

You could potentially save up to 1% on your flight if you consider stops on a Ontario to London flight.

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 Burbank Bob Hope Airport (in Burbank). If you are looking for alternate airports to fly into when traveling from Ontario, you can try flying into London City Airport (in London), London Gatwick Airport (in London), or London Luton Airport (in 15). In September, $434 is typically the cheapest round trip price you’ll find from Ontario to London which you can find when you fly LAX — LGW.

Los Angeles Airport (LAX) to London Heathrow Airport (LHR)$489
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Los Angeles Airport (LAX) to London City Airport (LCY)$649
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Los Angeles Airport (LAX) to London Gatwick Airport (LGW)$434
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Ontario Airport (ONT) to London Heathrow Airport (LHR)$555
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Los Angeles Airport (LAX) to London Luton Airport (LTN)$598
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Santa Ana J. Wayne/Orange Cnty Airport (SNA) to London Heathrow Airport (LHR)$540
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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 six months. All fares were found on momondo this week. Browse the quickest and cheapest flights from Ontario to London by changing tabs
British Airways
Oct 24
ONT6:52 amOntario
19h 33m
1 stop
LHR7:25 amLondon Heathrow
Nov 7
LHR3:25 amLondon Heathrow
23h 41m
2 stops
ONT3:06 amOntario
American Airlines
Oct 23
ONT8:59 pmOntario
22h 46m
1 stop
LHR12:45 amLondon Heathrow
Nov 7
LHR6:50 amLondon Heathrow
16h 55m
1 stop
ONT11:45 pmOntario
Delta
Oct 21
ONT7:20 amOntario
13h 55m
1 stop
LHR2:15 amLondon Heathrow
Nov 11
LHR3:40 amLondon Heathrow
22h 11m
2 stops
ONT1:51 amOntario
Virgin Atlantic
Oct 25
ONT1:20 pmOntario
12h 10m
1 stop
LHR6:30 amLondon Heathrow
Nov 1
LHR8:20 amLondon Heathrow
17h 19m
1 stop
ONT1:39 amOntario
Iberia
Oct 16
ONT10:40 amOntario
14h 05m
1 stop
LHR5:45 amLondon Heathrow
Oct 27
LHR10:05 amLondon Heathrow
17h 49m
1 stop
ONT3:54 amOntario
United Airlines
Oct 13
ONT12:24 pmOntario
13h 46m
1 stop
LHR7:10 amLondon Heathrow
Oct 23
LHR8:20 amLondon Heathrow
13h 51m
1 stop
ONT10:11 pmOntario

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 British Airways, Delta and JetBlue
Multiple Airlines
Oct 18
ONT1:25 amOntario
21h 15m
2 stops
LGW3:40 amLondon Gatwick
JetBlue
Oct 29
ONT7:39 pmOntario
14h 06m
1 stop
LHR1:45 pmLondon Heathrow
Multiple Airlines
Oct 18
ONT2:10 amOntario
42h 50m
3 stops
LGW2:00 amLondon Gatwick

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
Oct 2
ONT6:47 amOntario
19h 43m
2 stops
LHR7:30 amLondon Heathrow
Oct 4
LHR9:05 amLondon Heathrow
37h 52m
2 stops
ONT10:57 pmOntario
Multiple Airlines
Oct 1
ONT1:15 amOntario
20h 25m
1 stop
LHR2:40 amLondon Heathrow
Oct 4
LHR2:50 pmLondon Heathrow
23h 30m
2 stops
ONT2:20 pmOntario
United Airlines
Oct 4
ONT12:24 pmOntario
13h 46m
1 stop
LHR7:10 amLondon Heathrow
Dec 8
LHR4:20 amLondon Heathrow
14h 17m
1 stop
ONT6:37 pmOntario
Delta
Sep 30
ONT1:20 pmOntario
18h 45m
2 stops
LHR1:05 pmLondon Heathrow
Oct 15
LHR7:45 amLondon Heathrow
19h 13m
1 stop
ONT2:58 amOntario
Air Canada
Oct 4
ONT6:56 amOntario
18h 24m
2 stops
LHR6:20 amLondon Heathrow
Oct 17
LHR6:15 amLondon Heathrow
21h 47m
2 stops
ONT4:02 amOntario
Iberia
Oct 4
ONT10:47 amOntario
13h 58m
1 stop
LHR5:45 amLondon Heathrow
Oct 11
LHR10:05 amLondon Heathrow
17h 49m
1 stop
ONT3:54 amOntario

Best airlines flying from Ontario to London

Compare and see reviews for airlines that fly from Ontario to London with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $548Free CancellationRating
7.8
1,565 reviews
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United AirlinesPriceFrom $598Free CancellationRating
7.2
2,716 reviews
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Virgin AtlanticPriceFrom $611Free CancellationRating
7.6
329 reviews
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British AirwaysPriceFrom $653Free CancellationRating
6.4
2,315 reviews
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American AirlinesPriceFrom $664Free CancellationRating
7.1
2,890 reviews
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IberiaPriceFrom $754Free CancellationRating
6.9
555 reviews
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British Airways flights from Ontario to London

Our best British Airways deals on Ontario to London flight tickets
British Airways
Oct 24
ONT6:52 amOntario
19h 33m
1 stop
LHR7:25 amLondon Heathrow
Nov 7
LHR3:25 amLondon Heathrow
23h 41m
2 stops
ONT3:06 amOntario
British Airways
Nov 15
ONT7:58 amOntario
16h 22m
1 stop
LHR5:20 amLondon Heathrow
Nov 22
LHR6:55 amLondon Heathrow
18h 05m
1 stop
ONT1:00 amOntario
British Airways
Jan 18
ONT6:00 amOntario
13h 15m
1 stop
LHR12:15 amLondon Heathrow
Feb 1
LHR6:55 amLondon Heathrow
14h 21m
1 stop
ONT9:16 pmOntario

American Airlines flights from Ontario to London

Our best American Airlines deals on Ontario to London flight tickets
American Airlines
Oct 23
ONT8:59 pmOntario
22h 46m
1 stop
LHR12:45 amLondon Heathrow
Nov 7
LHR6:50 amLondon Heathrow
16h 55m
1 stop
ONT11:45 pmOntario
American Airlines
Oct 24
ONT5:45 amOntario
15h 20m
2 stops
LHR2:05 amLondon Heathrow
Nov 7
LHR6:50 amLondon Heathrow
16h 55m
1 stop
ONT11:45 pmOntario
American Airlines
Oct 24
ONT6:52 amOntario
15h 38m
2 stops
LHR3:30 amLondon Heathrow
Nov 7
LHR9:10 amLondon Heathrow
17h 56m
2 stops
ONT3:06 amOntario

  • 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 05m.

  • When did momondo last update prices for flights from Ontario Airport to London?

    Prices for flights from Ontario Airport to London are updated daily.

  • How many operators does momondo search for flights from Ontario Airport to London?

  • How old do you have to be to fly from Ontario Airport to London?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ontario Airport to London.

  • What documentation or ID do you need to fly to London?

    The necessary travel and health documents for your London trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.


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 Flights
Fastest flight time10h 35m
Cheapest price$434
San Francisco to London Flights
Fastest flight time10h 25m
Cheapest price$492
San Diego to London Flights
Fastest flight time10h 20m
Cheapest price$632
Santa Ana to London Flights
Fastest flight time12h 23m
Cheapest price$540
San Jose to London Flights
Fastest flight time10h 15m
Cheapest price$599
Oakland, California to London Flights
Fastest flight time12h 40m
Cheapest price$647
Burbank to London Flights
Fastest flight time12h 25m
Cheapest price$588
Sacramento to London Flights
Fastest flight time15h 00m
Cheapest price$628
Los Angeles to Manchester Flights
Fastest flight time14h 55m
Cheapest price$524

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?

Why should I use momondo to find a flight deal from Ontario to London?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Ontario to London. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Ontario to London with flexible booking policies on momondo?

All flight searches from Ontario to London on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Ontario to London?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Ontario to London.

I’m not ready to book a flight from Ontario to London right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Ontario to London flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.


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