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

British Airways, Delta, and KLM are the most popular carriers operating from London Heathrow to Ontario

When did momondo last update prices for flights from London Heathrow Airport to Ontario Airport?

Prices for flights from London Heathrow Airport to Ontario Airport are refreshed on a daily basis.

How old do you have to be to fly from London Heathrow Airport to Ontario Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London Heathrow Airport to Ontario Airport.

What documentation or ID do you need to fly to Ontario Airport?

The necessary travel and health documents for your Ontario Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

€370 Cheap Flights from London Heathrow Airport to Ontario in 2025/26

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

Prices are currently low for flights on this route. Typical prices usually range from €470 to €588. The lowest price recently found on this route was €453.

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Find the cheapest flights from London Heathrow Airport to Los Angeles

Round-trip

One-way

Last minute

Cheap return flights

10:05 - 22:18LHR-ONT

19h 13m1 stop

14:59 - 11:40ONT-LHR

12h 41m1 stop

€453British Airways

Find Deal

Thu, 30 Oct - Thu, 6 Nov

10:30 - 22:33LHR-ONT

20h 03m1 stop

16:47 - 13:15ONT-LHR

12h 28m1 stop

€454British Airways

Find Deal

Wed, 1 Oct - Wed, 19 Nov

06:30 - 19:19LHR-ONT

19h 49m2 stops

07:35 - 10:30ONT-LHR

18h 55m1 stop

€458Delta

Find Deal

Thu, 30 Oct - Thu, 6 Nov

11:00 - 21:24LHR-ONT

18h 24m1 stop

16:47 - 13:15ONT-LHR

12h 28m1 stop

€462British Airways

Find Deal

Wed, 1 Oct - Sat, 22 Nov

06:30 - 17:09LHR-ONT

18h 39m2 stops

06:00 - 10:30ONT-LHR

20h 30m2 stops

€471Delta

Find Deal

Sat, 22 Nov - Sat, 29 Nov

13:25 - 22:41LHR-ONT

17h 16m1 stop

13:15 - 14:15ONT-LHR

17h 00m2 stops

€501Virgin Atlantic

Find Deal

Mon, 13 Oct - Mon, 20 Oct

10:45 - 16:19LHR-ONT

13h 34m1 stop

13:00 - 09:50ONT-LHR

12h 50m1 stop

€532KLM

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Sun, 11 Jan - Sat, 1 Aug

10:05 - 17:34LHR-ONT

14h 29m1 stop

13:33 - 09:40ONT-LHR

12h 07m1 stop

€568United Airlines

Find Deal

Wed, 29 Oct - Wed, 5 Nov

13:30 - 22:51LHR-ONT

17h 21m2 stops

20:38 - 07:25ONT-LHR

26h 47m1 stop

€587United Airlines

Find Deal

Fri, 21 Nov - Sun, 30 Nov

10:45 - 16:15LHR-ONT

13h 30m1 stop

11:45 - 09:00ONT-LHR

13h 15m1 stop

€914KLM

Find Deal

Sun, 28 Dec - Sun, 4 Jan

JetBlue flights from London Heathrow Airport to Ontario

Our best JetBlue deals on London Heathrow Airport to Ontario flight tickets

JetBlue

7 Oct

LHR11:55London Heathrow

17h 34m

1 stop

ONT21:29Ontario

14 Oct

ONT22:56Ontario

13h 49m

1 stop

LHR20:45London Heathrow

€678

Find similar

JetBlue

2 Oct

LHR08:15London Heathrow

21h 14m

1 stop

ONT21:29Ontario

7 Oct

ONT22:56Ontario

13h 49m

1 stop

LHR20:45London Heathrow

€679

Find similar

JetBlue

1 Oct

LHR08:15London Heathrow

21h 14m

1 stop

ONT21:29Ontario

8 Oct

ONT22:56Ontario

13h 49m

1 stop

LHR20:45London Heathrow

€692

Find similar

United Airlines flights from London Heathrow Airport to Ontario

Our best United Airlines deals on London Heathrow Airport to Ontario flight tickets

United Airlines

29 Oct

LHR10:05London Heathrow

14h 29m

1 stop

ONT17:34Ontario

5 Nov

ONT13:33Ontario

12h 07m

1 stop

LHR09:40London Heathrow

€568

Find similar

United Airlines

21 Nov

LHR13:30London Heathrow

17h 21m

2 stops

ONT22:51Ontario

30 Nov

ONT20:38Ontario

26h 47m

1 stop

LHR07:25London Heathrow

€587

Find similar

United Airlines

1 Oct

LHR14:50London Heathrow

13h 34m

1 stop

ONT20:24Ontario

28 Apr

ONT16:15Ontario

12h 05m

1 stop

LHR12:20London Heathrow

€597

Find similar

momondo Fare Finder

Use the filters below to find and compare flights from London Heathrow Airport to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Thu 30/10

10:05-22:18

1 stop19h 13m

Ontario

Thu 6/11

14:59-11:40

1 stop12h 41m

€453

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 1/10

10:30-22:33

1 stop20h 03m

Ontario

Wed 19/11

16:47-13:15

1 stop12h 28m

€454

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Thu 30/10

06:30-19:19

2 stops19h 49m

Ontario

Thu 6/11

07:35-10:30

1 stop18h 55m

€458

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 1/10

11:00-21:24

1 stop18h 24m

Ontario

Sat 22/11

16:47-13:15

1 stop12h 28m

€462

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Sat 22/11

06:30-17:09

2 stops18h 39m

Ontario

Sat 29/11

06:00-10:30

2 stops20h 30m

€471

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Mon 13/10

13:25-22:41

1 stop17h 16m

Ontario

Mon 20/10

13:15-14:15

2 stops17h 00m

€501

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Sun 11/1

10:45-16:19

1 stop13h 34m

Ontario

Sat 1/8

13:00-09:50

1 stop12h 50m

€532

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 29/10

10:05-17:34

1 stop14h 29m

Ontario

Wed 5/11

13:33-09:40

1 stop12h 07m

€568

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Fri 21/11

13:30-22:51

2 stops17h 21m

Ontario

Sun 30/11

20:38-07:25

1 stop26h 47m

€587

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Sun 28/12

10:45-16:15

1 stop13h 30m

Ontario

Sun 4/1

11:45-09:00

1 stop13h 15m

€914

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 London Heathrow Airport to Ontario

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 London Heathrow Airport and Ontario?

What is the cheapest month to fly to Ontario?

If you don’t want to visit Ontario in September, then you should wait until February to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of €501.

How far in advance should I book a flight to Ontario?

You are more likely to see cheaper flights to Ontario from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Ontario for around €611 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ontario from London Heathrow Airport for as low as €496 on momondo.

When to book flights from London Heathrow Airport to Ontario

Are you open to changing your travel dates? Check out the ideal times to fly from London Heathrow Airport to Ontario according to our flight data. Find out which month and days have the cheapest flights.

Estimated return price

Cheap London Heathrow Airport to Ontario (LHR to ONT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Ontario

Direct flights	None

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

Search flight deals

How far is London Heathrow to Ontario by plane?
There are 8703.4 km between London Heathrow and Ontario. Flights usually cover this in 13h 30m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from London Heathrow Airport to Ontario Airport?
Prices for flights from London Heathrow Airport to Ontario Airport are refreshed on a daily basis.
How old do you have to be to fly from London Heathrow Airport to Ontario Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London Heathrow Airport to Ontario Airport.
What documentation or ID do you need to fly to Ontario Airport?
The necessary travel and health documents for your Ontario Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from London to Ontario?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to Ontario for you.

Can I find flights from London to Ontario with flexible booking policies on momondo?

momondo does allow users to show only those flights to Ontario from London which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from London to Ontario?

momondo helps you find the best flight between London and Ontario by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from London to Ontario right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Ontario from London. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.