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Cheap flights from Ontario to London Heathrow Airport from $411

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to London Heathrow Airport departing on 4/22. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap Ontario to London Heathrow Airport (ONT to LHR) flight deals and tips

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

Best Price Found

$411

Fastest flight time

12h 04m

Direct flights

None
The best one-way flight to London Heathrow Airport from Ontario in the past 72 hours is $411. The best round-trip flight deal from Ontario to London Heathrow Airport found on momondo in the last 72 hours is $639.
The fastest flight from Ontario to London Heathrow Airport takes 12h 04m
There are no direct flights from Ontario to London Heathrow Airport. Popular non-direct route for this connection is Ontario Airport - London Heathrow Airport.

How to get the cheapest flight ticket from Ontario to London Heathrow Airport

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 Heathrow Airport?

February. The cheapest time of year to fly to London Heathrow Airport from Ontario is February. Most expensive is July

What is the cheapest day to depart Ontario for London Heathrow Airport?

Thursday. The cheapest day of the week is typically Thursday. The most expensive is typically Saturday

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

At noon. Ontario to London Heathrow Airport flights are approximately 24% more expensive in the evening than at noon

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

Virgin Atlantic. American Airlines, British Airways, and Delta are the most popular carriers operating from Ontario to London Heathrow Airport

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

46 days before. The cheapest time to buy a flight from Ontario to London Heathrow Airport is approximately 46 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), Burbank Bob Hope Airport (in Burbank), or Santa Ana J. Wayne/Orange Cnty Airport (in Santa Ana). The least expensive flight option from Ontario to London will typically be LAX — LHR during the month of March with an average price of $525 RT.

Los Angeles Airport (LAX) to London Heathrow Airport (LHR)$525
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Ontario Airport (ONT) to London Heathrow Airport (LHR)$665
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Burbank Bob Hope Airport (BUR) to London Heathrow Airport (LHR)$721
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Santa Ana J. Wayne/Orange Cnty Airport (SNA) to London Heathrow Airport (LHR)$696
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Long Beach Municipal Airport (LGB) to London Heathrow Airport (LHR)$705
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Easily compare round-trip flights from Ontario to London Heathrow Airport

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 Heathrow Airport by changing tabs
Virgin Atlantic
Apr 14
ONT12:35 pmOntario
14h 35m
1 stop
LHR11:10 amLondon Heathrow
Apr 30
LHR9:40 amLondon Heathrow
22h 19m
2 stops
ONT11:59 pmOntario
United Airlines
Jul 26
ONT5:20 amOntario
20h 20m
1 stop
LHR9:40 amLondon Heathrow
Aug 19
LHR9:30 amLondon Heathrow
35h 02m
2 stops
ONT12:32 pmOntario
Iberia
Apr 10
ONT7:43 amOntario
16h 17m
1 stop
LHR8:00 amLondon Heathrow
Apr 17
LHR6:15 amLondon Heathrow
25h 42m
2 stops
ONT11:57 pmOntario
American Airlines
Apr 30
ONT7:43 amOntario
22h 42m
1 stop
LHR2:25 pmLondon Heathrow
May 8
LHR8:50 amLondon Heathrow
17h 32m
2 stops
ONT6:22 pmOntario
Air Canada
Jul 26
ONT1:30 pmOntario
36h 30m
2 stops
LHR10:00 amLondon Heathrow
Aug 19
LHR9:30 amLondon Heathrow
35h 02m
2 stops
ONT12:32 pmOntario
Delta
May 6
ONT1:20 pmOntario
12h 40m
1 stop
LHR10:00 amLondon Heathrow
May 17
LHR11:45 amLondon Heathrow
19h 58m
2 stops
ONT11:43 pmOntario

Find the cheapest one-way flights from Ontario to London Heathrow Airport

If you're looking for one-way flights from Ontario to London Heathrow Airport, view some of our deals below provided by American Airlines, KLM and United Airlines
Multiple Airlines
Apr 22
ONT10:59 pmOntario
54h 26m
3 stops
LHR1:25 pmLondon Heathrow
American Airlines
Aug 24
ONT11:00 pmOntario
24h 30m
1 stop
LHR7:30 amLondon Heathrow
United Airlines
Apr 22
ONT1:36 pmOntario
12h 04m
1 stop
LHR9:40 amLondon Heathrow

Search last-minute flights to London Heathrow Airport from Ontario

Find and compare round-trip flight prices for your last-minute flight from Ontario to London Heathrow Airport
American Airlines
Apr 2
ONT7:13 amOntario
15h 12m
1 stop
LHR6:25 amLondon Heathrow
Apr 16
LHR8:50 amLondon Heathrow
19h 52m
2 stops
ONT8:42 pmOntario
United Airlines
Apr 3
ONT5:15 amOntario
20h 25m
1 stop
LHR9:40 amLondon Heathrow
Apr 10
LHR3:50 pmLondon Heathrow
28h 50m
2 stops
ONT12:40 pmOntario
Iberia
Apr 2
ONT7:13 amOntario
19h 37m
1 stop
LHR10:50 amLondon Heathrow
Apr 16
LHR10:50 amLondon Heathrow
21h 07m
2 stops
ONT11:57 pmOntario
British Airways
Apr 3
ONT11:01 amOntario
12h 59m
1 stop
LHR8:00 amLondon Heathrow
Apr 10
LHR11:00 amLondon Heathrow
18h 56m
1 stop
ONT9:56 pmOntario
KLM
Apr 3
ONT1:20 pmOntario
12h 40m
1 stop
LHR10:00 amLondon Heathrow
May 1
LHR3:55 pmLondon Heathrow
14h 45m
1 stop
ONT10:40 pmOntario
Air Canada
Apr 3
ONT5:15 amOntario
17h 15m
2 stops
LHR6:30 amLondon Heathrow
Apr 12
LHR2:10 pmLondon Heathrow
27h 52m
2 stops
ONT10:02 amOntario

Best airlines flying from Ontario to London Heathrow Airport

Compare and see reviews for airlines that fly from Ontario to London Heathrow Airport with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $500Free CancellationRating
8.0
11,402 reviews
Search Delta flights
British AirwaysPriceFrom $597Free CancellationRating
6.8
6,968 reviews
Search British Airways flights
Virgin AtlanticPriceFrom $600Free CancellationRating
7.7
755 reviews
Search Virgin Atlantic flights
American AirlinesPriceFrom $602Free CancellationRating
7.3
15,181 reviews
Search American Airlines flights
United AirlinesPriceFrom $610Free CancellationRating
7.4
11,481 reviews
Search United Airlines flights
IberiaPriceFrom $742Free CancellationRating
7.1
2,810 reviews
Search Iberia flights

United Airlines flights from Ontario to London Heathrow Airport

Our best United Airlines deals on Ontario to London Heathrow Airport flight tickets
United Airlines
Jul 26
ONT5:20 amOntario
20h 20m
1 stop
LHR9:40 amLondon Heathrow
Aug 19
LHR9:30 amLondon Heathrow
35h 02m
2 stops
ONT12:32 pmOntario
United Airlines
Apr 14
ONT6:00 amOntario
19h 00m
2 stops
LHR9:00 amLondon Heathrow
Apr 30
LHR1:30 pmLondon Heathrow
17h 34m
2 stops
ONT11:04 pmOntario
United Airlines
Apr 14
ONT1:36 pmOntario
14h 44m
1 stop
LHR12:20 pmLondon Heathrow
May 1
LHR2:50 pmLondon Heathrow
13h 50m
1 stop
ONT8:40 pmOntario

Iberia flights from Ontario to London Heathrow Airport

Our best Iberia deals on Ontario to London Heathrow Airport flight tickets
Iberia
Apr 10
ONT7:43 amOntario
16h 17m
1 stop
LHR8:00 amLondon Heathrow
Apr 17
LHR6:15 amLondon Heathrow
25h 42m
2 stops
ONT11:57 pmOntario
Iberia
Apr 16
ONT10:46 amOntario
13h 14m
1 stop
LHR8:00 amLondon Heathrow
Apr 23
LHR4:25 pmLondon Heathrow
15h 32m
1 stop
ONT11:57 pmOntario
Iberia
Apr 11
ONT10:46 amOntario
13h 14m
1 stop
LHR8:00 amLondon Heathrow
Apr 24
LHR4:25 pmLondon Heathrow
15h 32m
1 stop
ONT11:57 pmOntario

  • How far is Ontario to London Heathrow by plane?

    The straight-line distance from Ontario to London Heathrow is 5408.1 mi. Typically, this will take 12h 04m by plane in normal conditions.

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

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

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

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

    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 Heathrow Airport.

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

    The necessary travel and health documents for your London Heathrow Airport 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 Heathrow Airport

Compare alternative flights to and from nearby airports and cities to discover the best prices and most convenient flight times
Los Angeles to London Heathrow Airport Flights
Fastest flight time10h 15m
Cheapest price$525
San Francisco to London Heathrow Airport Flights
Fastest flight time10h 19m
Cheapest price$590
Los Angeles to London Gatwick Airport Flights
Fastest flight time10h 20m
Cheapest price$393
Los Angeles to London City Airport Flights
Fastest flight time12h 25m
Cheapest price$660
San Francisco to London Gatwick Airport Flights
Fastest flight time14h 10m
Cheapest price$568
San Francisco to London City Airport Flights
Fastest flight time13h 45m
Cheapest price$679
San Diego to London Heathrow Airport Flights
Fastest flight time10h 20m
Cheapest price$732
Los Angeles to London Luton Airport Flights
Fastest flight time14h 15m
Cheapest price$593
Burbank to London Heathrow Airport Flights
Fastest flight time15h 22m
Cheapest price$671
Santa Ana to London Heathrow Airport Flights
Fastest flight time13h 33m
Cheapest price$696
Oakland, California to London Heathrow Airport Flights
Fastest flight time13h 12m
Cheapest price$671
San Jose to London Heathrow Airport Flights
Fastest flight time12h 17m
Cheapest price$630

Similar Ontario to London Heathrow Airport flights

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

Why use momondo?

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

Finding the right flight to London from Ontario is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to London quick and easy, saving you time and money.

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

Yes. momondo allows you to filter the results for Ontario to London flights to just show those with 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 offers price alerts on flights to London from Ontario. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.


An easier way to manage your London Heathrow Airport trip

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