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 12 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?

JetBlue, British Airways, and Air France 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.

£183 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 typical for flights on this route. Typical prices usually range from £418 to £552. The lowest price recently found on this route was £435.

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Find the cheapest flights from Ontario to London

Round-trip

One-way

Last minute

Cheap return flights

16:45 - 12:50ONT-LHR

12h 05m1 stop

12:00 - 19:03LHR-ONT

15h 03m1 stop

£435American Airlines

Find Deal

Mon, 29 Sep - Wed, 15 Oct

09:55 - 09:50ONT-LHR

15h 55m1 stop

06:20 - 17:10LHR-ONT

17h 50m2 stops

£436Delta

Find Deal

Wed, 1 Oct - Thu, 30 Oct

13:15 - 14:15ONT-LHR

17h 00m2 stops

09:55 - 23:39LHR-ONT

21h 44m2 stops

£440Virgin Atlantic

Find Deal

Wed, 8 Oct - Wed, 22 Oct

14:51 - 12:15ONT-LHR

14h 24m1 stop

10:05 - 18:21LHR-ONT

16h 16m1 stop

£441Multiple Airlines

Find Deal

Mon, 27 Oct - Fri, 7 Nov

13:15 - 09:50ONT-LHR

12h 35m1 stop

12:20 - 22:41LHR-ONT

17h 21m1 stop

£442KLM

Find Deal

Wed, 1 Oct - Thu, 30 Oct

06:00 - 10:00ONT-LHR

20h 00m1 stop

11:05 - 23:59LHR-ONT

20h 54m2 stops

£445Virgin Atlantic

Find Deal

Mon, 1 Dec - Tue, 16 Dec

16:49 - 12:50ONT-LHR

12h 01m1 stop

09:55 - 19:41LHR-ONT

17h 46m1 stop

£455British Airways

Find Deal

Wed, 15 Oct - Wed, 12 Nov

16:49 - 12:50ONT-LHR

12h 01m1 stop

08:20 - 16:28LHR-ONT

15h 08m1 stop

£473British Airways

Find Deal

Fri, 17 Oct - Tue, 28 Oct

07:05 - 06:45ONT-LHR

15h 40m1 stop

13:05 - 22:22LHR-ONT

17h 17m1 stop

£478KLM

Find Deal

Thu, 2 Oct - Thu, 16 Oct

11:45 - 09:00ONT-LHR

13h 15m1 stop

12:20 - 22:38LHR-ONT

18h 18m1 stop

£493Multiple Airlines

Find Deal

Mon, 15 Dec - Fri, 9 Jan

American Airlines flights from Ontario to London

Our best American Airlines deals on Ontario to London flight tickets

American Airlines

29 Sept

ONT16:45Ontario

12h 05m

1 stop

LHR12:50London Heathrow

15 Oct

LHR12:00London Heathrow

15h 03m

1 stop

ONT19:03Ontario

£435

Find similar

American Airlines

22 Sept

ONT16:45Ontario

12h 05m

1 stop

LHR12:50London Heathrow

7 Oct

LHR12:00London Heathrow

14h 52m

1 stop

ONT18:52Ontario

£483

Find similar

American Airlines

28 Sept

ONT16:45Ontario

12h 05m

1 stop

LHR12:50London Heathrow

14 Oct

LHR12:00London Heathrow

14h 52m

1 stop

ONT18:52Ontario

£564

Find similar

Virgin Atlantic flights from Ontario to London

Our best Virgin Atlantic deals on Ontario to London flight tickets

Virgin Atlantic

8 Oct

ONT13:15Ontario

17h 00m

2 stops

LHR14:15London Heathrow

22 Oct

LHR09:55London Heathrow

21h 44m

2 stops

ONT23:39Ontario

£440

Find similar

Virgin Atlantic

1 Dec

ONT06:00Ontario

20h 00m

1 stop

LHR10:00London Heathrow

16 Dec

LHR11:05London Heathrow

20h 54m

2 stops

ONT23:59Ontario

£445

Find similar

Virgin Atlantic

27 Feb

ONT13:00Ontario

13h 00m

1 stop

LHR10:00London Heathrow

3 Mar

LHR10:45London Heathrow

21h 07m

1 stop

ONT23:52Ontario

£484

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Mon 29/9

16:45-12:50

1 stop12h 05m

London Heathrow

Wed 15/10

12:00-19:03

1 stop15h 03m

£435

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Wed 1/10

09:55-09:50

1 stop15h 55m

London Heathrow

Thu 30/10

06:20-17:10

2 stops17h 50m

£436

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Wed 8/10

13:15-14:15

2 stops17h 00m

London Heathrow

Wed 22/10

09:55-23:39

2 stops21h 44m

£440

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Mon 27/10

14:51-12:15

1 stop14h 24m

London Heathrow

Fri 7/11

10:05-18:21

1 stop16h 16m

£441

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Wed 1/10

13:15-09:50

1 stop12h 35m

London Heathrow

Thu 30/10

12:20-22:41

1 stop17h 21m

£442

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Mon 1/12

06:00-10:00

1 stop20h 00m

London Heathrow

Tue 16/12

11:05-23:59

2 stops20h 54m

£445

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Wed 15/10

16:49-12:50

1 stop12h 01m

London Heathrow

Wed 12/11

09:55-19:41

1 stop17h 46m

£455

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Fri 17/10

16:49-12:50

1 stop12h 01m

London Heathrow

Tue 28/10

08:20-16:28

1 stop15h 08m

£473

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Thu 2/10

07:05-06:45

1 stop15h 40m

London Heathrow

Thu 16/10

13:05-22:22

1 stop17h 17m

£478

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Mon 15/12

11:45-09:00

1 stop13h 15m

London Heathrow

Fri 9/1

12:20-22:38

1 stop18h 18m

£493

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 £495, are often lower during this time because this is during the off-season. The month of September is another great option to travel to London, with average flight prices from Ontario averaging around £501.

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

Our data shows that Wednesday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £504. 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 £573.

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 £517. Flights at midday are often more expensive, with an average ticket price of £680.

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 £625 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 £444 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.

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 01m 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

Luton

Milton Keynes

Maidstone

Gatwick

Slough

Canterbury

Southend-on-Sea

Ipswich

Ilford

Guildford

Colchester

Worthing

Chelmsford

Dover

Hayes

Dartford

Winchester

Hounslow

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.