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Cheap flights from Ontario to London Heathrow Airport from $394

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 9/28. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Ontario to London

Cheap round-trip flights

KAYAK's recommended round-trip deals from the most popular airlines that fly from Ontario to London.
Lufthansa Logo
1:15 pm - 9:40 amONT-LHR
12h 25m1 stop
Lufthansa Logo
11:25 am - 5:17 pmLHR-ONT
13h 52m1 stop
$665Lufthansa
Find Deal
Wed, Oct 1 - Wed, Oct 15
Iberia Logo
2:59 pm - 2:25 pmONT-LHR
15h 26m1 stop
Iberia Logo
10:50 am - 11:36 pmLHR-ONT
20h 46m2 stops
$698Iberia
Find Deal
Wed, Aug 27 - Wed, Sep 10
Air Canada Logo
5:10 am - 6:35 amONT-LHR
17h 25m2 stops
Air Canada Logo
2:10 pm - 5:37 pmLHR-ONT
35h 27m2 stops
$702Air Canada
Find Deal
Sun, Aug 24 - Thu, Sep 11
Delta Logo
12:00 pm - 11:10 amONT-LHR
15h 10m1 stop
Delta Logo
11:20 am - 7:42 pmLHR-ONT
16h 22m1 stop
$718Delta
Find Deal
Sun, Aug 24 - Fri, Sep 12
British Airways Logo
4:45 pm - 12:50 pmONT-LHR
12h 05m1 stop
British Airways Logo
3:40 pm - 9:35 pmLHR-ONT
13h 55m1 stop
$719British Airways
Find Deal
Sun, Jul 20 - Wed, Aug 20
United Airlines Logo
6:36 pm - 7:25 amONT-LHR
28h 49m1 stop
United Airlines Logo
2:50 pm - 8:33 pmLHR-ONT
13h 43m1 stop
$724United Airlines
Find Deal
Sat, Aug 23 - Thu, Sep 4
British Airways Logo
4:45 pm - 12:50 pmONT-LHR
12h 05m1 stop
British Airways Logo
3:40 pm - 9:40 pmLHR-ONT
14h 00m1 stop
$738British Airways
Find Deal
Mon, Jul 28 - Sun, Sep 7
United Airlines Logo
4:15 pm - 12:20 pmONT-LHR
12h 05m1 stop
United Airlines Logo
2:50 pm - 8:53 pmLHR-ONT
14h 03m1 stop
$753United Airlines
Find Deal
Thu, May 8 - Wed, May 21
Delta Logo
7:05 am - 1:30 pmONT-LHR
22h 25m1 stop
Delta Logo
8:40 am - 10:35 pmLHR-ONT
21h 55m2 stops
$805Delta
Find Deal
Sat, May 10 - Sat, May 17
American Airlines Logo
4:35 pm - 12:50 pmONT-LHR
12h 15m1 stop
American Airlines Logo
3:40 pm - 9:57 pmLHR-ONT
14h 17m1 stop
$852American Airlines
Find Deal
Fri, May 9 - Tue, May 13

British Airways flights from Ontario to London Heathrow Airport

Our best British Airways deals on Ontario to London Heathrow Airport flight tickets
British Airways
Jul 20
ONT4:45 pmOntario
12h 05m
1 stop
LHR12:50 pmLondon Heathrow
Aug 20
LHR3:40 pmLondon Heathrow
13h 55m
1 stop
ONT9:35 pmOntario
British Airways
Jul 28
ONT4:45 pmOntario
12h 05m
1 stop
LHR12:50 pmLondon Heathrow
Sep 7
LHR3:40 pmLondon Heathrow
14h 00m
1 stop
ONT9:40 pmOntario
British Airways
Sep 25
ONT12:49 pmOntario
14h 01m
1 stop
LHR10:50 amLondon Heathrow
Oct 24
LHR3:40 pmLondon Heathrow
32h 56m
1 stop
ONT4:36 pmOntario

United Airlines flights from Ontario to London Heathrow Airport

Our best United Airlines deals on Ontario to London Heathrow Airport flight tickets
United Airlines
Aug 23
ONT6:36 pmOntario
28h 49m
1 stop
LHR7:25 amLondon Heathrow
Sep 4
LHR2:50 pmLondon Heathrow
13h 43m
1 stop
ONT8:33 pmOntario
United Airlines
May 8
ONT4:15 pmOntario
12h 05m
1 stop
LHR12:20 pmLondon Heathrow
May 21
LHR2:50 pmLondon Heathrow
14h 03m
1 stop
ONT8:53 pmOntario
United Airlines
May 8
ONT6:00 amOntario
16h 20m
2 stops
LHR6:20 amLondon Heathrow
May 15
LHR7:25 amLondon Heathrow
18h 36m
2 stops
ONT6:01 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 March is, on average, the cheapest month to fly to London Heathrow Airport from Ontario, with most prices found around $669. If you’re not able to fly to London Heathrow Airport in March, then February is your next best option. Flight prices from Ontario to London Heathrow Airport during February average around $674.

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

Our data shows that Wednesday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $820. The most expensive day to fly to London Heathrow Airport is Saturday, with ticket prices averaging around $955.

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 $755. 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 $900.

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

You are more likely to see cheaper flights to London Heathrow Airport from Ontario when booking 16 weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around $828 when searching 16 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Ontario for as low as $731 on momondo.

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

$394

Fastest flight time

12h 00m

Direct flights

None
The best one-way flight to London Heathrow Airport from Ontario in the past 72 hours is $394. The best round-trip flight deal from Ontario to London Heathrow Airport found on momondo in the last 72 hours is $665.
The fastest flight from Ontario to London Heathrow Airport takes 12h 00m
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 $454Free CancellationRating
7.4
642 reviews
Search Virgin Atlantic flights
IberiaPriceFrom $582Free CancellationRating
7.0
2,686 reviews
Search Iberia flights
DeltaPriceFrom $598Free CancellationRating
8.0
7,920 reviews
Search Delta flights
British AirwaysPriceFrom $629Free CancellationRating
6.6
6,811 reviews
Search British Airways flights
United AirlinesPriceFrom $629Free CancellationRating
7.4
8,685 reviews
Search United Airlines flights
American AirlinesPriceFrom $629Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Gatwick
Hounslow
Croydon
Luton
Guildford
Slough
Hayes
Dartford
Dover
Stansted
Ilford
Salisbury
Milton Keynes
Canterbury
Colchester
Horley
Wembley
Swindon
Chelmsford
Richmond

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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