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Cheap flights from Ontario to London from £296

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 28/9. 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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Cheap return flights

KAYAK's recommended return flight deals from the most popular airlines that fly from Ontario to London.
Lufthansa Logo
13:15 - 09:40ONT-LHR
12h 25m1 stop
Lufthansa Logo
11:25 - 17:17LHR-ONT
13h 52m1 stop
£500Lufthansa
Find Deal
Wed, 1 Oct - Wed, 15 Oct
Lufthansa Logo
13:15 - 09:40ONT-LHR
12h 25m1 stop
Lufthansa Logo
11:25 - 17:17LHR-ONT
13h 52m1 stop
£504Lufthansa
Find Deal
Tue, 23 Sep - Fri, 24 Oct
Iberia Logo
14:59 - 14:25ONT-LHR
15h 26m1 stop
Iberia Logo
10:50 - 23:36LHR-ONT
20h 46m2 stops
£525Iberia
Find Deal
Wed, 27 Aug - Wed, 10 Sep
Air Canada Logo
05:10 - 06:35ONT-LHR
17h 25m2 stops
Air Canada Logo
14:10 - 17:37LHR-ONT
35h 27m2 stops
£528Air Canada
Find Deal
Sun, 24 Aug - Thu, 11 Sep
British Airways Logo
17:09 - 14:40ONT-LHR
13h 31m1 stop
British Airways Logo
15:40 - 21:40LHR-ONT
14h 00m1 stop
£531British Airways
Find Deal
Tue, 23 Sep - Tue, 21 Oct
United Airlines Logo
13:34 - 09:40ONT-LHR
12h 06m1 stop
United Airlines Logo
10:35 - 17:37LHR-ONT
15h 02m1 stop
£539United Airlines
Find Deal
Sun, 17 Aug - Tue, 2 Sep
United Airlines Logo
13:42 - 10:25ONT-LHR
12h 43m1 stop
United Airlines Logo
10:35 - 17:37LHR-ONT
15h 02m1 stop
£540United Airlines
Find Deal
Tue, 26 Aug - Thu, 11 Sep
British Airways Logo
16:45 - 12:50ONT-LHR
12h 05m1 stop
British Airways Logo
15:40 - 21:35LHR-ONT
13h 55m1 stop
£540British Airways
Find Deal
Sun, 20 Jul - Wed, 20 Aug
Iberia Logo
12:46 - 14:25ONT-LHR
17h 39m1 stop
Iberia Logo
11:30 - 23:36LHR-ONT
20h 06m2 stops
£562Iberia
Find Deal
Sat, 23 Aug - Thu, 4 Sep
Air Canada Logo
05:10 - 06:35ONT-LHR
17h 25m2 stops
Air Canada Logo
14:10 - 17:37LHR-ONT
35h 27m2 stops
£564Air Canada
Find Deal
Wed, 10 Sep - Sat, 20 Sep

Virgin Atlantic flights from Ontario to London

Our best Virgin Atlantic deals on Ontario to London flight tickets
Virgin Atlantic
3 Sept
ONT07:00Ontario
18h 15m
2 stops
LHR09:15London Heathrow
21 Dec
LHR12:20London Heathrow
19h 57m
2 stops
ONT00:17Ontario
Virgin Atlantic
2 Sept
ONT07:00Ontario
18h 15m
2 stops
LHR09:15London Heathrow
21 Dec
LHR12:20London Heathrow
19h 57m
2 stops
ONT00:17Ontario

KLM flights from Ontario to London

Our best KLM deals on Ontario to London flight tickets
KLM
4 Aug
ONT13:00Ontario
12h 50m
1 stop
LHR09:50London Heathrow
17 Aug
LHR10:55London Heathrow
13h 22m
1 stop
ONT16:17Ontario
KLM
9 May
ONT13:10Ontario
12h 40m
1 stop
LHR09:50London Heathrow
7 Jun
LHR10:55London Heathrow
13h 22m
1 stop
ONT16:17Ontario
KLM
9 May
ONT13:10Ontario
12h 40m
1 stop
LHR09:50London Heathrow
6 Jun
LHR15:15London Heathrow
15h 14m
1 stop
ONT22:29Ontario

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 typical price of a round-trip flight between Ontario and London?

What is the cheapest month to fly to London?

The cheapest month to fly to London from Ontario is in October. Flight prices, which tend to average around £502, are often lower during this time because this is during the off-season. The month of January is another great option to travel to London, with average flight prices from Ontario averaging around £513.

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 £535. 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 £631.

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 morning when flights can be purchased for as low as £548. Flights at midday are often more expensive, with an average ticket price of £664.

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

You are more likely to see cheaper flights to London from Ontario when booking 16 weeks ahead of your departure date. In general, you can expect to find flights to London for around £623 when searching 16 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Ontario for as low as £549 on momondo.

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

£296

Fastest flight time

12h 05m

Direct flights

None

Airports in London

2 airports
The best one-way flight to London from Ontario in the past 72 hours is £296. The best return flight deal from Ontario to London found on momondo in the last 72 hours is £500.
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 and Ontario Airport - London Heathrow Airport.
There are 2 airports near London: 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.


Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Eastbourne
Milton Keynes
Luton
Slough
Southend-on-Sea
Gatwick
Maidstone
Ipswich
Canterbury
Margate
Dartford
Ilford
Hounslow
Colchester
Guildford
Worthing
Winchester
Crawley
Chichester
Croydon

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