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Cheap flights from Ontario to London Heathrow Airport from $363

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 2/20. 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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Find the cheapest flights from Ontario to London

Cheap round-trip flights

These are some of the best round-trip flight deals from Ontario to London that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from Ontario to London.

Cheap last minute flights

Planning a quick getaway from Ontario to London? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to London, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from Ontario to London

Find recent round-trip train or bus tickets from Ontario to London.

All round-trip flight deals to London

The cheapest plane tickets to London found on KAYAK recently.
4:25 pm - 1:20 pmONT-LHR
12h 55m1 stop
2:30 pm - 10:00 pmLHR-ONT
14h 30m1 stop
$675British Airways
Find Deal
Tue, Feb 25 - Tue, Mar 11
10:51 am - 8:00 amONT-LHR
13h 09m1 stop
11:15 am - 6:27 pmLHR-ONT
15h 12m1 stop
$677British Airways
Find Deal
Tue, Apr 22 - Tue, Apr 29
10:47 am - 12:00 pmONT-LHR
17h 13m1 stop
3:00 pm - 8:52 pmLHR-ONT
37h 52m2 stops
$681United Airlines
Find Deal
Wed, Feb 12 - Wed, Feb 19
10:51 am - 12:05 pmONT-LHR
17h 14m1 stop
8:10 am - 10:16 pmLHR-ONT
22h 06m2 stops
$683British Airways
Find Deal
Sun, Feb 16 - Tue, Feb 25
10:51 am - 10:50 amONT-LHR
15h 59m1 stop
6:10 am - 10:11 pmLHR-ONT
24h 01m2 stops
$684Iberia
Find Deal
Mon, Apr 21 - Tue, Apr 29
6:15 am - 7:25 amONT-LHR
17h 10m1 stop
6:30 am - 6:04 pmLHR-ONT
19h 34m2 stops
$689United Airlines
Find Deal
Sun, Jan 12 - Wed, Jan 22
1:00 pm - 11:40 amONT-LHR
14h 40m1 stop
8:25 pm - 4:28 pmLHR-ONT
28h 03m2 stops
$690Virgin Atlantic
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Mon, Jan 20 - Mon, Jan 27
6:00 am - 12:40 pmONT-LHR
22h 40m1 stop
6:30 am - 10:32 pmLHR-ONT
24h 02m2 stops
$740Virgin Atlantic
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Sun, Jan 19 - Sun, Jan 26
4:30 pm - 12:50 pmONT-LHR
12h 20m1 stop
11:15 am - 5:47 pmLHR-ONT
14h 32m1 stop
$855American Airlines
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Mon, Mar 31 - Mon, Jun 2
2:00 pm - 11:25 amONT-LHR
13h 25m1 stop
9:55 am - 10:40 pmLHR-ONT
20h 45m2 stops
$948Delta
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Fri, May 9 - Fri, May 23
6:00 am - 12:50 pmONT-LHR
22h 50m2 stops
$363WestJet
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Thu, Feb 20
11:42 am - 12:50 pmONT-LHR
18h 08m2 stops
$368WestJet
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Tue, Mar 25
5:40 am - 12:50 pmONT-LHR
24h 10m2 stops
$379WestJet
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Fri, Mar 28
4:25 pm - 1:20 pmONT-LHR
12h 55m1 stop
$411British Airways
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Tue, Jan 28
4:25 pm - 1:20 pmONT-LHR
12h 55m1 stop
$416British Airways
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Wed, Feb 5
1:21 pm - 10:00 amONT-LHR
12h 39m1 stop
$421Delta
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Tue, Jan 7
10:47 am - 8:35 pmONT-LHR
25h 48m2 stops
$428United Airlines
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Sat, Feb 1
1:00 pm - 7:55 amONT-LHR
34h 55m1 stop
$433Virgin Atlantic
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Sat, Jan 11
3:30 pm - 7:25 amONT-LHR
31h 55m1 stop
$434United Airlines
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Sat, Feb 22
1:00 pm - 11:40 amONT-LHR
14h 40m1 stop
$460Virgin Atlantic
Find Deal
Sat, Jan 11
10:46 am - 12:05 pmONT-LHR
17h 19m1 stop
10:05 am - 11:58 pmLHR-ONT
21h 53m2 stops
$1,005Iberia
Find Deal
Tue, Dec 24 - Thu, Jan 16
6:00 am - 7:25 amONT-LHR
17h 25m1 stop
9:30 am - 9:57 pmLHR-ONT
20h 27m2 stops
$1,011United Airlines
Find Deal
Thu, Dec 26 - Tue, Jan 28
1:57 pm - 7:25 amONT-LHR
33h 28m1 stop
10:05 am - 5:57 pmLHR-ONT
15h 52m1 stop
$1,019United Airlines
Find Deal
Sat, Dec 28 - Sun, Jan 19
10:29 pm - 7:55 amONT-LHR
25h 26m1 stop
10:50 am - 10:28 pmLHR-ONT
19h 38m1 stop
$1,022Delta
Find Deal
Sat, Dec 28 - Sun, Jan 12
10:46 am - 12:05 pmONT-LHR
17h 19m1 stop
9:25 am - 6:37 pmLHR-ONT
17h 12m1 stop
$1,025British Airways
Find Deal
Tue, Dec 24 - Tue, Jan 14
6:52 am - 6:20 amONT-LHR
15h 28m1 stop
10:45 am - 11:53 pmLHR-ONT
21h 08m1 stop
$1,048Virgin Atlantic
Find Deal
Tue, Dec 24 - Sun, Jan 12
3:06 pm - 12:05 pmONT-LHR
12h 59m1 stop
10:40 am - 6:37 pmLHR-ONT
15h 57m1 stop
$1,057British Airways
Find Deal
Fri, Dec 27 - Mon, Jan 13
5:30 am - 11:40 amONT-LHR
22h 10m2 stops
6:20 am - 11:53 pmLHR-ONT
25h 33m2 stops
$1,070Delta
Find Deal
Tue, Dec 24 - Sun, Jan 12
11:56 am - 12:40 pmONT-LHR
16h 44m2 stops
9:10 am - 12:28 amLHR-ONT
23h 18m2 stops
$1,088Virgin Atlantic
Find Deal
Thu, Dec 26 - Sat, Dec 28
10:46 am - 12:05 pmONT-LHR
17h 19m1 stop
10:40 am - 6:33 pmLHR-ONT
15h 53m1 stop
$1,318American Airlines
Find Deal
Tue, Dec 24 - Tue, Dec 31

KLM flights from Ontario to London Heathrow Airport

Our best KLM deals on Ontario to London Heathrow Airport flight tickets
KLM
Jan 21
ONT1:00 pmOntario
13h 35m
1 stop
LHR10:35 amLondon Heathrow
Jan 28
LHR10:45 amLondon Heathrow
13h 43m
1 stop
ONT4:28 pmOntario
KLM
Jan 12
ONT1:00 pmOntario
13h 35m
1 stop
LHR10:35 amLondon Heathrow
Jan 22
LHR3:50 pmLondon Heathrow
14h 42m
1 stop
ONT10:32 pmOntario
KLM
Jan 12
ONT1:00 pmOntario
13h 35m
1 stop
LHR10:35 amLondon Heathrow
Jan 28
LHR12:30 pmLondon Heathrow
18h 22m
1 stop
ONT10:52 pmOntario

British Airways flights from Ontario to London Heathrow Airport

Our best British Airways deals on Ontario to London Heathrow Airport flight tickets
British Airways
Feb 25
ONT4:25 pmOntario
12h 55m
1 stop
LHR1:20 pmLondon Heathrow
Mar 11
LHR2:30 pmLondon Heathrow
14h 30m
1 stop
ONT10:00 pmOntario
British Airways
Apr 22
ONT10:51 amOntario
13h 09m
1 stop
LHR8:00 amLondon Heathrow
Apr 29
LHR11:15 amLondon Heathrow
15h 12m
1 stop
ONT6:27 pmOntario
British Airways
Feb 16
ONT10:51 amOntario
17h 14m
1 stop
LHR12:05 pmLondon Heathrow
Feb 25
LHR8:10 amLondon Heathrow
22h 06m
2 stops
ONT10:16 pmOntario

See travel insights to London from

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 to London Heathrow Airport?

The month of October is, on average, the cheapest month to fly to London Heathrow Airport from Ontario, with most prices found around $631. If you’re not able to fly to London Heathrow Airport in October, then April is your next best option. Flight prices from Ontario to London Heathrow Airport during April average around $635.

What is the cheapest day to depart on your flight to London Heathrow Airport?

Our data shows that Tuesday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $765. The most expensive day to fly to London Heathrow Airport is Saturday, with ticket prices averaging around $884.

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the morning. momondo users have found flights departing from Ontario to London Heathrow Airport in the morning for as low as $663. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights at noon are often more expensive with an average ticket price of $909.

How far in advance should I book a flight to London Heathrow Airport?

We recommend purchasing flights from Ontario to London Heathrow Airport 52 days ahead of your departure date because this is when momondo users tend to see the best flight rates. On average, our users have found flights to London Heathrow Airport for $794. Don’t hesitate to check prices now though because momondo users recently found tickets for as low as $546.

Can stopping save me money on Ontario to London Heathrow Airport flights?

You could potentially save up to 31% on your flight if you consider stops on a Ontario to London Heathrow Airport flight.

When to book flights from Ontario to London Heathrow Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to London Heathrow Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

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

$363

Fastest flight time

12h 05m

Direct flights

None
The best one-way flight to London Heathrow Airport from Ontario in the past 72 hours is $363. The best round-trip flight deal from Ontario to London Heathrow Airport found on momondo in the last 72 hours is $675.
The fastest flight from Ontario to London Heathrow Airport takes 12h 05m
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 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 05m 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.

  • What is the most popular airline from Ontario to London Heathrow Airport?


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
Virgin AtlanticPriceFrom $455Free CancellationRating
7.5
667 reviews
Search Virgin Atlantic flights
DeltaPriceFrom $481Free CancellationRating
8.0
8,588 reviews
Search Delta flights
American AirlinesPriceFrom $609Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
British AirwaysPriceFrom $612Free CancellationRating
6.6
6,810 reviews
Search British Airways flights
United AirlinesPriceFrom $619Free CancellationRating
7.4
9,022 reviews
Search United Airlines flights

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.


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