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 53% of people opting to fly with this airline when travelling to London. Keep in mind that there are 14 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

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

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

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.

£177 Cheap Flights from Ontario to London in 2026

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Find the cheapest flights from Ontario to London

Round-trip

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

13:40 - 12:00

ONT

LHR

14h 20m

1 stop

06:35 - 17:41

LHR

ONT

19h 06m

2 stops

£457United Airlines

tor., 26 feb. - ons., 4 mar.

07:30 - 10:30

ONT

LHR

19h 00m

1 stop

06:30 - 17:12

LHR

ONT

17h 42m

2 stops

£457Delta

tor., 5 mar. - tor., 12 mar.

07:30 - 10:30

ONT

LHR

19h 00m

1 stop

08:40 - 21:05

LHR

ONT

20h 25m

2 stops

£460Delta

tor., 26 feb. - tor., 5 mar.

06:00 - 10:30

ONT

LHR

20h 30m

2 stops

20:25 - 16:02

LHR

ONT

27h 37m

2 stops

£461Virgin Atlantic

man., 23 feb. - man., 2 mar.

17:00 - 20:10

ONT

LHR

19h 10m

2 stops

08:40 - 21:05

LHR

ONT

20h 25m

2 stops

£463Delta

tor., 26 feb. - tor., 5 mar.

14:39 - 11:40

ONT

LHR

13h 01m

1 stop

14:20 - 22:07

LHR

ONT

14h 47m

1 stop

£470British Airways

man., 2 mar. - tor., 12 mar.

14:39 - 11:40

ONT

LHR

13h 01m

1 stop

14:25 - 22:07

LHR

ONT

14h 42m

1 stop

£473British Airways

man., 2 mar. - man., 9 mar.

12:50 - 09:00

ONT

LHR

13h 10m

1 stop

14:30 - 22:34

LHR

ONT

15h 04m

1 stop

£476Multiple Airlines

man., 9 mar. - tor., 19 mar.

06:00 - 09:25

ONT

LGW

43h 25m

2 stops

17:05 - 20:58

LGW

ONT

35h 53m

2 stops

£488Air France

man., 13 apr. - man., 27 apr.

06:00 - 09:25

ONT

LGW

43h 25m

2 stops

17:00 - 20:58

LGW

ONT

59h 58m

2 stops

£578Air France

man., 13 apr. - søn., 26 apr.

Virgin Atlantic flights from Ontario to London

Our best Virgin Atlantic deals on Ontario to London flight tickets

Virgin Atlantic

23 Feb

ONT07:30Ontario

20h 25m

1 stop

LHR11:55London Heathrow

2 Mar

LHR20:25London Heathrow

27h 37m

2 stops

ONT16:02Ontario

£457

Virgin Atlantic

23 Feb

ONT06:00Ontario

20h 30m

2 stops

LHR10:30London Heathrow

2 Mar

LHR20:25London Heathrow

27h 37m

2 stops

ONT16:02Ontario

£461

KLM flights from Ontario to London

Our best KLM deals on Ontario to London flight tickets

KLM

23 Feb

ONT13:15Ontario

14h 25m

1 stop

LHR11:40London Heathrow

2 Mar

LHR12:20London Heathrow

18h 17m

1 stop

ONT22:37Ontario

£478

KLM

4 Mar

ONT06:00Ontario

20h 00m

1 stop

LHR10:00London Heathrow

11 Mar

LHR12:20London Heathrow

17h 13m

1 stop

ONT22:33Ontario

£480

KLM

11 Feb

ONT12:41Ontario

14h 59m

1 stop

LHR11:40London Heathrow

19 Feb

LHR14:30London Heathrow

16h 07m

1 stop

ONT22:37Ontario

£500

Fly from

Fly to

Route

Depart

Return

Price

OntarioLondon

ONT - LHR

ONTLHR

Ontario

tor. 26/2

13:40-12:00

1 stop14h 20m

London Heathrow

ons. 4/3

06:35-17:41

2 stops19h 06m

£457

OntarioLondon

ONT - LHR

ONTLHR

Ontario

tor. 5/3

07:30-10:30

1 stop19h 00m

London Heathrow

tor. 12/3

06:30-17:12

2 stops17h 42m

£457

OntarioLondon

ONT - LHR

ONTLHR

Ontario

tor. 26/2

07:30-10:30

1 stop19h 00m

London Heathrow

tor. 5/3

08:40-21:05

2 stops20h 25m

£460

OntarioLondon

ONT - LHR

ONTLHR

Ontario

man. 23/2

06:00-10:30

2 stops20h 30m

London Heathrow

man. 2/3

20:25-16:02

2 stops27h 37m

£461

OntarioLondon

ONT - LHR

ONTLHR

Ontario

tor. 26/2

17:00-20:10

2 stops19h 10m

London Heathrow

tor. 5/3

08:40-21:05

2 stops20h 25m

£462

OntarioLondon

ONT - LHR

ONTLHR

Ontario

man. 2/3

14:39-11:40

1 stop13h 01m

London Heathrow

tor. 12/3

14:20-22:07

1 stop14h 47m

£470

OntarioLondon

ONT - LHR

ONTLHR

Ontario

man. 2/3

14:39-11:40

1 stop13h 01m

London Heathrow

man. 9/3

14:25-22:07

1 stop14h 42m

£473

OntarioLondon

ONT - LHR

ONTLHR

Ontario

man. 9/3

12:50-09:00

1 stop13h 10m

London Heathrow

tor. 19/3

14:30-22:34

1 stop15h 04m

£476

OntarioLondon

ONT - LGW

ONTLGW

Ontario

man. 13/4

06:00-09:25

2 stops43h 25m

London Gatwick

man. 27/4

17:05-20:58

2 stops35h 53m

£488

OntarioLondon

ONT - LGW

ONTLGW

Ontario

man. 13/4

06:00-09:25

2 stops43h 25m

London Gatwick

søn. 26/4

17:00-20:58

2 stops59h 58m

£578

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 cheapest month to fly to London?

The cheapest month to fly to London from Ontario is in February. Flight prices, which tend to average around £474, 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 £492.

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 £487. 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 £569.

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 £499. Flights at midday are often more expensive, with an average ticket price of £625.

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 £614 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 £440 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

Fastest flight time	12h 13m
Direct flights	None

The fastest flight from Ontario to London takes 12h 13m

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

Search flight deals

How far is Ontario to London by plane?
Ontario and London are 5417.5 mi apart from one another. Typically, this will take 12h 13m 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

Southend-on-Sea

Canterbury

Ipswich

Ilford

Guildford

Chelmsford

Hayes

Dover

Folkestone

Worthing

Colchester

Bedford

Ramsgate

Chichester

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.