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

United Airlines, British Airways, and Delta 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.

€366 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 €521 to €600. The lowest price recently found on this route was €447.

1 adult

0 bags

Voted the Winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from London Heathrow Airport to Los Angeles

Round-trip

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

06:30 - 21:07LHR-ONT

22h 37m2 stops

22:20 - 07:50ONT-LHR

25h 30m1 stop

€447Delta

Find Deal

Thu, 26 Feb - Mon, 2 Mar

06:30 - 21:07LHR-ONT

22h 37m2 stops

16:54 - 10:00ONT-LHR

33h 06m1 stop

€451Delta

Find Deal

Thu, 26 Feb - Mon, 2 Mar

10:45 - 23:53LHR-ONT

21h 08m1 stop

06:00 - 10:00ONT-LHR

20h 00m1 stop

€462Virgin Atlantic

Find Deal

Thu, 26 Feb - Mon, 2 Mar

10:45 - 16:04LHR-ONT

13h 19m1 stop

13:00 - 09:50ONT-LHR

12h 50m1 stop

€470KLM

Find Deal

Tue, 3 Mar - Mon, 30 Mar

10:10 - 21:07LHR-ONT

18h 57m2 stops

13:04 - 11:40ONT-LHR

14h 36m1 stop

€506KLM

Find Deal

Sat, 10 Jan - Fri, 16 Jan

14:45 - 23:53LHR-ONT

17h 08m2 stops

06:00 - 08:05ONT-LHR

18h 05m2 stops

€532Virgin Atlantic

Find Deal

Thu, 26 Feb - Mon, 2 Mar

10:05 - 17:37LHR-ONT

15h 32m1 stop

13:24 - 09:40ONT-LHR

12h 16m1 stop

€561United Airlines

Find Deal

Tue, 9 Dec - Thu, 22 Jan

11:35 - 20:42LHR-ONT

17h 07m1 stop

13:34 - 09:40ONT-LHR

12h 06m1 stop

€561United Airlines

Find Deal

Wed, 3 Dec - Wed, 10 Dec

16:30 - 23:58LHR-ONT

15h 28m1 stop

15:09 - 12:10ONT-LHR

13h 01m1 stop

€568British Airways

Find Deal

Mon, 2 Mar - Tue, 31 Mar

15:00 - 22:48LHR-ONT

15h 48m1 stop

16:59 - 13:15ONT-LHR

12h 16m1 stop

€571British Airways

Find Deal

Tue, 3 Feb - Tue, 17 Feb

Delta flights from London Heathrow Airport to Ontario

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

Delta

26 Feb

LHR06:30London Heathrow

22h 37m

2 stops

ONT21:07Ontario

2 Mar

ONT22:20Ontario

25h 30m

1 stop

LHR07:50London Heathrow

€447

Find similar

Delta

26 Feb

LHR06:30London Heathrow

22h 37m

2 stops

ONT21:07Ontario

2 Mar

ONT16:54Ontario

33h 06m

1 stop

LHR10:00London Heathrow

€451

Find similar

Delta

10 Jan

LHR15:05London Heathrow

15h 24m

1 stop

ONT22:29Ontario

17 Jan

ONT13:10Ontario

12h 50m

1 stop

LHR10:00London Heathrow

€466

Find similar

Virgin Atlantic flights from London Heathrow Airport to Ontario

Our best Virgin Atlantic deals on London Heathrow Airport to Ontario flight tickets

Virgin Atlantic

26 Feb

LHR10:45London Heathrow

21h 08m

1 stop

ONT23:53Ontario

2 Mar

ONT06:00Ontario

20h 00m

1 stop

LHR10:00London Heathrow

€462

Find similar

Virgin Atlantic

26 Feb

LHR14:45London Heathrow

17h 08m

2 stops

ONT23:53Ontario

2 Mar

ONT06:00Ontario

18h 05m

2 stops

LHR08:05London Heathrow

€532

Find similar

Virgin Atlantic

4 Dec

LHR10:45London Heathrow

21h 13m

1 stop

ONT23:58Ontario

17 Dec

ONT06:00Ontario

20h 00m

1 stop

LHR10:00London Heathrow

€545

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 26/2

06:30-21:07

2 stops22h 37m

Ontario

Mon 2/3

22:20-07:50

1 stop25h 30m

€447

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Thu 26/2

06:30-21:07

2 stops22h 37m

Ontario

Mon 2/3

16:54-10:00

1 stop33h 06m

€451

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Thu 26/2

10:45-23:53

1 stop21h 08m

Ontario

Mon 2/3

06:00-10:00

1 stop20h 00m

€462

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Tue 3/3

10:45-16:04

1 stop13h 19m

Ontario

Mon 30/3

13:00-09:50

1 stop12h 50m

€470

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Sat 10/1

10:10-21:07

2 stops18h 57m

Ontario

Fri 16/1

13:04-11:40

1 stop14h 36m

€506

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Thu 26/2

14:45-23:53

2 stops17h 08m

Ontario

Mon 2/3

06:00-08:05

2 stops18h 05m

€532

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Tue 9/12

10:05-17:37

1 stop15h 32m

Ontario

Thu 22/1

13:24-09:40

1 stop12h 16m

€561

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 3/12

11:35-20:42

1 stop17h 07m

Ontario

Wed 10/12

13:34-09:40

1 stop12h 06m

€561

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Mon 2/3

16:30-23:58

1 stop15h 28m

Ontario

Tue 31/3

15:09-12:10

1 stop13h 01m

€568

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Tue 3/2

15:00-22:48

1 stop15h 48m

Ontario

Tue 17/2

16:59-13:15

1 stop12h 16m

€571

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 €516.

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 €624 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 €471 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 19m, 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.