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

British Airways, United Airlines, and Virgin Atlantic are the most popular carriers operating from Ontario to London

Which airlines fly to London?

Virgin Atlantic, British Airways and Iberia are the top three most popular airlines that fly to London from Ontario according to our data. Virgin Atlantic is the first choice among our users, with 49% of people opting to fly with this airline when travelling to London. Keep in mind that there are 13 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

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.

£296 Cheap Flights from Ontario to London in 2025/26

Q: What is the typical price of a round-trip flight between Ontario and London?

Prices are currently low for flights on this route. Typical prices usually range from £482 to £632. The lowest price recently found on this route was £441.

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Find the cheapest flights from Ontario to London

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One-way

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Cheap return flights

Enter your travel dates to find the best prices.

06:40 - 12:50ONT-LHR

22h 10m1 stop

14:45 - 22:47LHR-ONT

16h 02m1 stop

£441Virgin Atlantic

Find Deal

Tue, 2 Dec - Tue, 16 Dec

07:30 - 12:50ONT-LHR

21h 20m1 stop

12:20 - 22:29LHR-ONT

18h 09m1 stop

£447Virgin Atlantic

Find Deal

Mon, 5 Jan - Tue, 20 Jan

10:50 - 10:00ONT-LHR

15h 10m1 stop

15:00 - 22:49LHR-ONT

15h 49m1 stop

£460British Airways

Find Deal

Tue, 30 Dec - Tue, 13 Jan

22:25 - 06:25ONT-LHR

24h 00m1 stop

06:20 - 23:58LHR-ONT

25h 38m2 stops

£466Delta

Find Deal

Sun, 16 Nov - Fri, 5 Dec

07:05 - 07:50ONT-LHR

16h 45m1 stop

06:30 - 17:08LHR-ONT

18h 38m2 stops

£467KLM

Find Deal

Sun, 16 Nov - Thu, 4 Dec

06:00 - 11:40ONT-LHR

21h 40m2 stops

06:20 - 23:58LHR-ONT

25h 38m2 stops

£469Delta

Find Deal

Sun, 16 Nov - Fri, 5 Dec

06:00 - 06:50ONT-LHR

16h 50m2 stops

06:30 - 19:42LHR-ONT

21h 12m2 stops

£470Multiple Airlines

Find Deal

Tue, 18 Nov - Thu, 27 Nov

16:45 - 13:15ONT-LHR

12h 30m1 stop

14:20 - 22:13LHR-ONT

15h 53m1 stop

£487British Airways

Find Deal

Tue, 13 Jan - Thu, 22 Jan

07:05 - 07:40ONT-LHR

16h 35m2 stops

06:30 - 17:08LHR-ONT

18h 38m2 stops

£491KLM

Find Deal

Sun, 16 Nov - Thu, 4 Dec

13:00 - 09:00ONT-LHR

13h 00m1 stop

14:45 - 22:38LHR-ONT

14h 53m1 stop

£507Multiple Airlines

Find Deal

Wed, 11 Mar - Tue, 24 Mar

Virgin Atlantic flights from Ontario to London

Our best Virgin Atlantic deals on Ontario to London flight tickets

Virgin Atlantic

2 Dec

ONT06:40Ontario

22h 10m

1 stop

LHR12:50London Heathrow

16 Dec

LHR14:45London Heathrow

16h 02m

1 stop

ONT22:47Ontario

£441

Find similar

Virgin Atlantic

5 Jan

ONT07:30Ontario

21h 20m

1 stop

LHR12:50London Heathrow

20 Jan

LHR12:20London Heathrow

18h 09m

1 stop

ONT22:29Ontario

£447

Find similar

Virgin Atlantic

30 Dec

ONT11:42Ontario

14h 48m

1 stop

LHR10:30London Heathrow

13 Jan

LHR14:45London Heathrow

15h 44m

1 stop

ONT22:29Ontario

£470

Find similar

Iberia flights from Ontario to London

Our best Iberia deals on Ontario to London flight tickets

Iberia

29 Oct

ONT08:15Ontario

18h 45m

1 stop

LHR10:00London Heathrow

5 Nov

LHR10:05London Heathrow

20h 24m

1 stop

ONT22:29Ontario

£471

Find similar

Iberia

11 Jan

ONT10:58Ontario

13h 37m

1 stop

LHR08:35London Heathrow

27 Jan

LHR15:00London Heathrow

15h 48m

1 stop

ONT22:48Ontario

£479

Find similar

Iberia

9 Nov

ONT10:47Ontario

13h 48m

1 stop

LHR08:35London Heathrow

25 Nov

LHR16:30London Heathrow

15h 27m

1 stop

ONT23:57Ontario

£509

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Tue 2/12

06:40-12:50

1 stop22h 10m

London Heathrow

Tue 16/12

14:45-22:47

1 stop16h 02m

£441

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Mon 5/1

07:30-12:50

1 stop21h 20m

London Heathrow

Tue 20/1

12:20-22:29

1 stop18h 09m

£447

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Tue 30/12

10:50-10:00

1 stop15h 10m

London Heathrow

Tue 13/1

15:00-22:49

1 stop15h 49m

£460

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Sun 16/11

22:25-06:25

1 stop24h 00m

London Heathrow

Fri 5/12

06:20-23:58

2 stops25h 38m

£466

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Sun 16/11

07:05-07:50

1 stop16h 45m

London Heathrow

Thu 4/12

06:30-17:08

2 stops18h 38m

£467

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Sun 16/11

06:00-11:40

2 stops21h 40m

London Heathrow

Fri 5/12

06:20-23:58

2 stops25h 38m

£469

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Tue 18/11

06:00-06:50

2 stops16h 50m

London Heathrow

Thu 27/11

06:30-19:42

2 stops21h 12m

£470

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Tue 13/1

16:45-13:15

1 stop12h 30m

London Heathrow

Thu 22/1

14:20-22:13

1 stop15h 53m

£487

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Sun 16/11

07:05-07:40

2 stops16h 35m

London Heathrow

Thu 4/12

06:30-17:08

2 stops18h 38m

£491

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Wed 11/3

13:00-09:00

1 stop13h 00m

London Heathrow

Tue 24/3

14:45-22:38

1 stop14h 53m

£507

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

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 £509, 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 Monday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £503. 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 £586.

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 £522. Flights at midday are often more expensive, with an average ticket price of £659.

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 weeks ahead of your departure date. In general, you can expect to find flights to London for around £646 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Ontario for as low as £455 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

Direct flights	None

There are no direct flights from Ontario to London. There are no popular flight routes from Ontario to London.

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How far is Ontario to London by plane?
Ontario and London are 5417.5 mi apart from one another. Typically, this will take 12h 11m 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.

Eastbourne

Milton Keynes

Luton

Gatwick

Maidstone

Slough

Canterbury

Southend-on-Sea

Ipswich

Ilford

Guildford

Colchester

Dover

Hayes

Chelmsford

Worthing

Dartford

Ramsgate

Bedford

Stansted

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.