Which airlines fly to London?

Virgin Atlantic, British Airways and KLM 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 48% 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?

Virgin Atlantic, United Airlines, and Delta 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.

£238 Cheap Flights from Ontario to London in 2026

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 £1,149 to £970. The lowest price recently found on this route was £583.

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Find the cheapest flights from Ontario to London

Round-trip

One-way

Last minute

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Enter your travel dates to find the best prices.

07:06 - 12:00

ONT

LHR

20h 54m

2 stops

12:00 - 22:04

LHR

ONT

18h 04m

1 stop

£583Multiple Airlines

Tue, 25 Aug - Thu, 27 Aug

13:56 - 07:25

ONT

LHR

33h 29m

1 stop

06:00 - 19:57

LHR

ONT

21h 57m

2 stops

£591SWISS

Sat, 19 Sep - Tue, 22 Sep

12:46 - 10:00

ONT

LHR

13h 14m

1 stop

15:00 - 22:23

LHR

ONT

15h 23m

1 stop

£635British Airways

Tue, 10 Nov - Tue, 17 Nov

12:35 - 12:50

ONT

LHR

16h 15m

1 stop

19:30 - 21:58

LHR

ONT

34h 28m

2 stops

£638Multiple Airlines

Mon, 14 Sep - Mon, 28 Sep

13:31 - 10:30

ONT

LHR

12h 59m

1 stop

15:00 - 22:23

LHR

ONT

15h 23m

1 stop

£641British Airways

Wed, 21 Oct - Mon, 2 Nov

06:10 - 10:00

ONT

LHR

19h 50m

1 stop

06:00 - 22:23

LHR

ONT

24h 23m

2 stops

£644Iberia

Tue, 3 Nov - Tue, 10 Nov

11:45 - 15:35

ONT

LHR

19h 50m

1 stop

06:30 - 17:16

LHR

ONT

18h 46m

2 stops

£645KLM

Sun, 23 Aug - Tue, 8 Sep

12:00 - 11:20

ONT

LHR

15h 20m

1 stop

11:45 - 22:23

LHR

ONT

18h 38m

2 stops

£646Delta

Wed, 26 Aug - Wed, 2 Sep

07:00 - 09:25

ONT

LGW

18h 25m

2 stops

10:35 - 22:43

LGW

ONT

20h 08m

2 stops

£653Delta

Tue, 6 Oct - Tue, 13 Oct

10:25 - 15:15

ONT

LCY

20h 50m

2 stops

07:50 - 22:19

LCY

ONT

22h 29m

2 stops

£788Iberia

Sun, 19 Jul - Wed, 2 Dec

British Airways flights from Ontario to London

Our best British Airways deals on Ontario to London flight tickets

British Airways

10 Nov

ONT16:47Ontario

12h 28m

1 stop

LHR13:15London Heathrow

17 Nov

LHR15:00London Heathrow

15h 23m

1 stop

ONT22:23Ontario

£635

British Airways

3 Nov

ONT14:59Ontario

13h 01m

1 stop

LHR12:00London Heathrow

10 Nov

LHR15:00London Heathrow

15h 23m

1 stop

ONT22:23Ontario

£641

British Airways

26 Aug

ONT12:59Ontario

13h 51m

1 stop

LHR10:50London Heathrow

7 Sept

LHR14:25London Heathrow

14h 47m

1 stop

ONT21:12Ontario

£643

Iberia flights from Ontario to London

Our best Iberia deals on Ontario to London flight tickets

Iberia

3 Nov

ONT06:10Ontario

19h 50m

1 stop

LHR10:00London Heathrow

10 Nov

LHR06:00London Heathrow

24h 23m

2 stops

ONT22:23Ontario

£644

Iberia

16 Nov

ONT10:47Ontario

18h 03m

2 stops

LHR12:50London Heathrow

26 Nov

LHR06:15London Heathrow

24h 08m

2 stops

ONT22:23Ontario

£652

Iberia

16 Nov

ONT10:47Ontario

18h 03m

2 stops

LHR12:50London Heathrow

24 Nov

LHR07:30London Heathrow

24h 27m

2 stops

ONT23:57Ontario

£662

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Tue 25/8

07:06-12:00

2 stops20h 54m

London Heathrow

Thu 27/8

12:00-22:04

1 stop18h 04m

£583

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Sat 19/9

13:56-07:25

1 stop33h 29m

London Heathrow

Tue 22/9

06:00-19:57

2 stops21h 57m

£591

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Tue 10/11

12:46-10:00

1 stop13h 14m

London Heathrow

Tue 17/11

15:00-22:23

1 stop15h 23m

£635

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Mon 14/9

12:35-12:50

1 stop16h 15m

London Heathrow

Mon 28/9

19:30-21:58

2 stops34h 28m

£638

Fastest return journey

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Wed 21/10

13:31-10:30

1 stop12h 59m

London Heathrow

Mon 2/11

15:00-22:23

1 stop15h 23m

£641

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Tue 3/11

06:10-10:00

1 stop19h 50m

London Heathrow

Tue 10/11

06:00-22:23

2 stops24h 23m

£644

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Sun 23/8

11:45-15:35

1 stop19h 50m

London Heathrow

Tue 8/9

06:30-17:16

2 stops18h 46m

£645

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Wed 26/8

12:00-11:20

1 stop15h 20m

London Heathrow

Wed 2/9

11:45-22:23

2 stops18h 38m

£646

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Tue 6/10

07:00-09:25

2 stops18h 25m

London Gatwick

Tue 13/10

10:35-22:43

2 stops20h 08m

£653

OntarioLondon

ONT - LCY

ONTLCY

Ontario

Sun 19/7

10:25-15:15

2 stops20h 50m

London City

Wed 2/12

07:50-22:19

2 stops22h 29m

£788

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 September. Flight prices, which tend to average around £187, are often lower during this time because this is during the off-season. The month of December is another great option to travel to London, with average flight prices from Ontario averaging around £210.

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 £522. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Ontario to London for around £650.

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

The cheapest time of day to fly to London is at midday when flights can be purchased for as low as £537. Flights in the evening are often more expensive, with an average ticket price of £606.

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 22m
Direct flights	None

The fastest flight from Ontario to London takes 12h 22m

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

Search flight deals

Frequently asked questions about flying from Ontario to London

How far is Ontario to London by plane?
Ontario and London are 5417.5 mi apart from one another. Typically, this will take 12h 22m 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

Gatwick

Luton

Wembley

Slough

Maidstone

Southend-on-Sea

Ipswich

Canterbury

Ilford

Hayes

Guildford

Folkestone

Chelmsford

Bedford

Dover

Harlow

Chichester

Colchester

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.

An easier way to manage your London trip

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Cheap flights from Ontario to London from £238

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 25/8. 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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Big names, great deals

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British Airways flights from Ontario to London

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How to get the cheapest flight ticket from Ontario to London

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

What is the cheapest month to fly to London?

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

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

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

Which airlines fly to London?

When to book flights from Ontario to London

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

Direct flights

Frequently asked questions about flying from Ontario to London

Travelling to a place near London?

Why use momondo?

An easier way to manage your London trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

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

Fly your favourite airline to London

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to London

List of cabin classes available on flights landing in London. Availability may vary depending on flight origin and airline.

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Popular flights according to clicks in the last 7 days on momondo

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