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 51% 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.

£235 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 £492 to £546. The lowest price recently found on this route was £432.

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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.

07:00 - 08:35

ONT

LHR

17h 35m

1 stop

06:15 - 22:30

LHR

ONT

23h 15m

2 stops

£432Iberia

Wed, 4 Mar - Wed, 11 Mar

06:00 - 08:15

ONT

LHR

19h 15m

1 stop

11:30 - 23:46

LHR

ONT

20h 16m

2 stops

£444Iberia

Tue, 24 Mar - Thu, 16 Apr

16:45 - 13:15

ONT

LHR

12h 30m

1 stop

16:30 - 23:59

LHR

ONT

15h 29m

1 stop

£446British Airways

Mon, 2 Feb - Thu, 26 Feb

17:02 - 13:15

ONT

LHR

12h 13m

1 stop

14:45 - 22:29

LHR

ONT

15h 44m

1 stop

£447British Airways

Sun, 15 Feb - Fri, 27 Feb

07:00 - 08:15

ONT

LHR

17h 15m

1 stop

20:50 - 22:29

LHR

ONT

33h 39m

2 stops

£448Iberia

Thu, 19 Feb - Thu, 26 Feb

14:39 - 11:40

ONT

LHR

13h 01m

1 stop

11:45 - 19:45

LHR

ONT

16h 00m

1 stop

£450British Airways

Wed, 18 Feb - Wed, 25 Feb

13:15 - 16:35

ONT

LCY

19h 20m

2 stops

07:45 - 21:00

LCY

ONT

20h 15m

2 stops

£543Delta

Tue, 3 Mar - Thu, 12 Mar

07:30 - 09:25

ONT

LGW

17h 55m

2 stops

10:25 - 20:58

LGW

ONT

18h 33m

2 stops

£609Delta

Thu, 23 Apr - Mon, 4 May

12:02 - 22:35

ONT

LGW

26h 33m

2 stops

17:05 - 23:32

LGW

ONT

37h 27m

2 stops

£777Multiple Airlines

Thu, 5 Mar - Thu, 12 Mar

12:02 - 22:35

ONT

LGW

26h 33m

2 stops

06:25 - 23:32

LGW

ONT

25h 07m

2 stops

£777Multiple Airlines

Thu, 26 Feb - Thu, 5 Mar

British Airways flights from Ontario to London

Our best British Airways deals on Ontario to London flight tickets

British Airways

2 Feb

ONT16:45Ontario

12h 30m

1 stop

LHR13:15London Heathrow

26 Feb

LHR16:30London Heathrow

15h 29m

1 stop

ONT23:59Ontario

£446

British Airways

15 Feb

ONT17:02Ontario

12h 13m

1 stop

LHR13:15London Heathrow

27 Feb

LHR14:45London Heathrow

15h 44m

1 stop

ONT22:29Ontario

£447

British Airways

18 Feb

ONT14:39Ontario

13h 01m

1 stop

LHR11:40London Heathrow

25 Feb

LHR11:45London Heathrow

16h 00m

1 stop

ONT19:45Ontario

£450

Iberia flights from Ontario to London

Our best Iberia deals on Ontario to London flight tickets

Iberia

4 Mar

ONT07:00Ontario

17h 35m

1 stop

LHR08:35London Heathrow

11 Mar

LHR06:15London Heathrow

23h 15m

2 stops

ONT22:30Ontario

£432

Iberia

24 Mar

ONT06:00Ontario

19h 15m

1 stop

LHR08:15London Heathrow

16 Apr

LHR11:30London Heathrow

20h 16m

2 stops

ONT23:46Ontario

£444

Iberia

19 Feb

ONT07:00Ontario

17h 15m

1 stop

LHR08:15London Heathrow

26 Feb

LHR20:50London Heathrow

33h 39m

2 stops

ONT22:29Ontario

£448

Fly from

Fly to

Route

Depart

Return

Price

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Wed 4/3

07:00-08:35

1 stop17h 35m

London Heathrow

Wed 11/3

06:15-22:30

2 stops23h 15m

£432

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Tue 24/3

06:00-08:15

1 stop19h 15m

London Heathrow

Thu 16/4

11:30-23:46

2 stops20h 16m

£444

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Mon 2/2

16:45-13:15

1 stop12h 30m

London Heathrow

Thu 26/2

16:30-23:59

1 stop15h 29m

£446

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Sun 15/2

17:02-13:15

1 stop12h 13m

London Heathrow

Fri 27/2

14:45-22:29

1 stop15h 44m

£447

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Thu 19/2

07:00-08:15

1 stop17h 15m

London Heathrow

Thu 26/2

20:50-22:29

2 stops33h 39m

£448

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Wed 18/2

14:39-11:40

1 stop13h 01m

London Heathrow

Wed 25/2

11:45-19:45

1 stop16h 00m

£450

OntarioLondon

ONT - LCY

ONTLCY

Ontario

Tue 3/3

13:15-16:35

2 stops19h 20m

London City

Thu 12/3

07:45-21:00

2 stops20h 15m

£543

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Thu 23/4

07:30-09:25

2 stops17h 55m

London Gatwick

Mon 4/5

10:25-20:58

2 stops18h 33m

£609

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Thu 5/3

12:02-22:35

2 stops26h 33m

London Gatwick

Thu 12/3

17:05-23:32

2 stops37h 27m

£777

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Thu 26/2

12:02-22:35

2 stops26h 33m

London Gatwick

Thu 5/3

06:25-23:32

2 stops25h 07m

£777

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 February. Flight prices, which tend to average around £487, 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 £506.

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 £499. 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 £583.

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 £642.

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 £630 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 £452 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 16m
Direct flights	None

The fastest flight from Ontario to London takes 12h 16m

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 16m 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

Gatwick

Maidstone

Slough

Southend-on-Sea

Canterbury

Ipswich

Ilford

Guildford

Chelmsford

Hayes

Dover

Bedford

Worthing

Ramsgate

Colchester

Folkestone

Winchester

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.