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Cheap flights from Ontario to London from £236

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 departing on 25/2. 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 return flights

These are some of the best return 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 stopovers.

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.
08:01 - 10:35ONT-LGW
18h 34m1 stop
12:00 - 19:59LGW-ONT
15h 59m1 stop
Sun, 2 Feb - Sun, 9 Feb
16:25 - 13:20ONT-LHR
12h 55m1 stop
14:30 - 22:00LHR-ONT
14h 30m1 stop
£537British Airways
Find Deal
Tue, 25 Feb - Tue, 11 Mar
10:47 - 12:00ONT-LHR
17h 13m1 stop
15:00 - 20:52LHR-ONT
37h 52m2 stops
£542United Airlines
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Wed, 12 Feb - Wed, 19 Feb
10:51 - 10:50ONT-LHR
15h 59m1 stop
06:10 - 22:11LHR-ONT
24h 01m2 stops
£544Iberia
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Mon, 21 Apr - Tue, 29 Apr
10:51 - 10:50ONT-LHR
15h 59m1 stop
11:30 - 23:51LHR-ONT
20h 21m2 stops
£546Iberia
Find Deal
Mon, 21 Apr - Wed, 30 Apr
06:15 - 07:25ONT-LHR
17h 10m1 stop
06:30 - 18:04LHR-ONT
19h 34m2 stops
£548United Airlines
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Sun, 12 Jan - Wed, 22 Jan
13:00 - 11:40ONT-LHR
14h 40m1 stop
20:25 - 16:28LHR-ONT
28h 03m2 stops
£549Virgin Atlantic
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Mon, 20 Jan - Mon, 27 Jan
13:00 - 10:35ONT-LHR
13h 35m1 stop
10:45 - 16:28LHR-ONT
13h 43m1 stop
£552KLM
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Tue, 21 Jan - Tue, 28 Jan
13:00 - 10:35ONT-LHR
13h 35m1 stop
15:50 - 22:32LHR-ONT
14h 42m1 stop
£553KLM
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Sun, 12 Jan - Wed, 22 Jan
06:00 - 12:40ONT-LHR
22h 40m1 stop
06:30 - 22:32LHR-ONT
24h 02m2 stops
£589Virgin Atlantic
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Sun, 19 Jan - Sun, 26 Jan
19:40 - 12:50ONT-LHR
33h 10m3 stops
Tue, 25 Feb
10:21 - 12:50ONT-LHR
18h 29m2 stops
Thu, 20 Feb
06:00 - 12:50ONT-LHR
22h 50m2 stops
£259WestJet
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Wed, 26 Feb
06:00 - 12:50ONT-LHR
22h 50m2 stops
£259WestJet
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Sat, 25 Jan
16:25 - 13:20ONT-LHR
12h 55m1 stop
£327British Airways
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Tue, 28 Jan
16:25 - 13:20ONT-LHR
12h 55m1 stop
£331British Airways
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Wed, 5 Feb
13:00 - 10:35ONT-LHR
13h 35m1 stop
£333KLM
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Sun, 12 Jan
13:21 - 10:00ONT-LHR
12h 39m1 stop
£335Delta
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Tue, 7 Jan
13:05 - 10:35ONT-LHR
13h 30m1 stop
£336KLM
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Sun, 23 Feb
14:00 - 16:40ONT-LCY
18h 40m2 stops
£414Delta
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Thu, 24 Apr
19:00 - 10:35ONT-LGW
31h 35m1 stop
12:00 - 07:14LGW-ONT
27h 14m1 stop
Sat, 28 Dec - Sun, 12 Jan
12:53 - 10:35ONT-LGW
13h 42m1 stop
12:00 - 19:56LGW-ONT
15h 56m1 stop
Tue, 24 Dec - Sun, 12 Jan
10:46 - 12:05ONT-LHR
17h 19m1 stop
10:05 - 23:58LHR-ONT
21h 53m2 stops
£799Iberia
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Tue, 24 Dec - Thu, 16 Jan
06:00 - 07:25ONT-LHR
17h 25m1 stop
09:30 - 21:57LHR-ONT
20h 27m2 stops
£804United Airlines
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Thu, 26 Dec - Tue, 28 Jan
13:57 - 07:25ONT-LHR
33h 28m1 stop
10:05 - 17:57LHR-ONT
15h 52m1 stop
£811United Airlines
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Sat, 28 Dec - Sun, 19 Jan
22:29 - 07:55ONT-LHR
25h 26m1 stop
10:50 - 22:28LHR-ONT
19h 38m1 stop
£813Delta
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Sat, 28 Dec - Sun, 12 Jan
10:46 - 12:05ONT-LHR
17h 19m1 stop
09:25 - 18:37LHR-ONT
17h 12m1 stop
£815British Airways
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Tue, 24 Dec - Tue, 14 Jan
15:06 - 12:05ONT-LHR
12h 59m1 stop
10:40 - 18:37LHR-ONT
15h 57m1 stop
£841British Airways
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Fri, 27 Dec - Mon, 13 Jan
05:30 - 11:40ONT-LHR
22h 10m2 stops
06:20 - 23:53LHR-ONT
25h 33m2 stops
£851Delta
Find Deal
Tue, 24 Dec - Sun, 12 Jan
10:46 - 12:05ONT-LHR
17h 19m1 stop
07:00 - 22:45LHR-ONT
23h 45m2 stops
£978Iberia
Find Deal
Tue, 24 Dec - Tue, 14 Jan

KLM flights from Ontario to London

Our best KLM deals on Ontario to London flight tickets
KLM
21 Jan
ONT13:00Ontario
13h 35m
1 stop
LHR10:35London Heathrow
28 Jan
LHR10:45London Heathrow
13h 43m
1 stop
ONT16:28Ontario
KLM
12 Jan
ONT13:00Ontario
13h 35m
1 stop
LHR10:35London Heathrow
22 Jan
LHR15:50London Heathrow
14h 42m
1 stop
ONT22:32Ontario
KLM
12 Jan
ONT13:00Ontario
13h 35m
1 stop
LHR10:35London Heathrow
28 Jan
LHR12:30London Heathrow
18h 22m
1 stop
ONT22:52Ontario

United Airlines flights from Ontario to London

Our best United Airlines deals on Ontario to London flight tickets
United Airlines
12 Feb
ONT10:47Ontario
17h 13m
1 stop
LHR12:00London Heathrow
19 Feb
LHR15:00London Heathrow
37h 52m
2 stops
ONT20:52Ontario
United Airlines
12 Jan
ONT06:15Ontario
17h 10m
1 stop
LHR07:25London Heathrow
22 Jan
LHR06:30London Heathrow
19h 34m
2 stops
ONT18:04Ontario
United Airlines
15 Mar
ONT18:45Ontario
34h 15m
1 stop
LHR12:00London Heathrow
25 Mar
LHR10:05London Heathrow
14h 59m
1 stop
ONT18:04Ontario

See travel insights to London from

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 to London?

The cheapest month to fly to London from Ontario is in April. Flight prices, which tend to average around £497, are often lower during this time because this is during the off-season. The month of October is another great option to travel to London, with average flight prices from Ontario averaging around £497.

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

Our data shows that Tuesday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £520. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Ontario to London for around £731.

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

The cheapest time of day to fly to London is in the afternoon when flights can be purchased for as low as £600. Flights at midday are often more expensive, with an average ticket price of £762.

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

In general, most travellers find the cheapest time to book a flight to London is about 52 days prior to their departure date, when tickets on average are £632. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Ontario for as low as £345 on momondo.

Can stopping save me money on Ontario to London flights?

You could potentially save up to 6% on your flight if you consider stops on a Ontario to London flight.

When to book flights from Ontario to London

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

Cheap Ontario to London (ONT to LON) flight deals and tips

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

Best price found

£236

Fastest flight time

12h 05m

Direct flights

None

Airports in London

3 airports
The best one-way flight to London from Ontario in the past 72 hours is £236. The best return flight deal from Ontario to London found on momondo in the last 72 hours is £524.
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 are 3 airports near London: London City (LCY), London Heathrow (LHR), London Gatwick (LGW)

  • How far is Ontario to London by plane?

    Ontario and London are 5417.5 mi apart from one another. Typically, this will take 12h 05m by plane in normal conditions.

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

    Prices for flights from Ontario Airport to London refresh daily.

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to London.

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

    The travel and health documents you'll need for your trip to London may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.


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?

Once you have performed a search for Ontario to London flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Of course. momondo tracks the price of Ontario to London flights. All you need is a valid email address and we will do the rest; it is that quick and easy.


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Find better results for your trip to the United Kingdom

Fly into one of these airports located in London

Airports listed have a maximum distance of 35.6 mi from London