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

British Airways, United Airlines, and JetBlue 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.

€416 Cheap Flights from London Heathrow Airport to Ontario in 2026

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 €577 to €764. The lowest price recently found on this route was €527.

Find the cheapest flights from London Heathrow Airport to Los Angeles

Return

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

08:40 - 20:01

LHR

ONT

19h 21m

2 stops

05:00 - 12:35

ONT

LHR

23h 35m

1 stop

€527United Airlines

Wed, 9 Sep - Wed, 23 Sep

09:30 - 21:59

LHR

ONT

20h 29m

2 stops

13:56 - 11:10

ONT

LHR

13h 14m

1 stop

€527United Airlines

Thu, 17 Sep - Mon, 21 Sep

07:30 - 20:31

LHR

ONT

21h 01m

2 stops

16:03 - 14:10

ONT

LHR

14h 07m

1 stop

€528United Airlines

Fri, 25 Sep - Wed, 30 Sep

09:30 - 21:59

LHR

ONT

20h 29m

2 stops

13:56 - 11:10

ONT

LHR

13h 14m

1 stop

€531United Airlines

Thu, 17 Sep - Mon, 21 Sep

09:30 - 21:59

LHR

ONT

20h 29m

2 stops

13:56 - 11:10

ONT

LHR

13h 14m

1 stop

€532United Airlines

Thu, 17 Sep - Mon, 21 Sep

09:30 - 21:59

LHR

ONT

20h 29m

2 stops

13:56 - 11:10

ONT

LHR

13h 14m

1 stop

€538United Airlines

Thu, 17 Sep - Mon, 21 Sep

06:35 - 20:56

LHR

ONT

22h 21m

2 stops

06:00 - 07:40

ONT

LHR

17h 40m

1 stop

€542United Airlines

Wed, 18 Nov - Thu, 19 Nov

06:35 - 20:56

LHR

ONT

22h 21m

2 stops

06:00 - 10:15

ONT

LHR

20h 15m

1 stop

€543United Airlines

Wed, 18 Nov - Thu, 19 Nov

07:30 - 20:56

LHR

ONT

21h 26m

2 stops

06:00 - 10:15

ONT

LHR

20h 15m

1 stop

€546United Airlines

Wed, 18 Nov - Thu, 19 Nov

06:35 - 20:56

LHR

ONT

22h 21m

2 stops

05:00 - 08:30

ONT

LHR

19h 30m

2 stops

€549United Airlines

Wed, 18 Nov - Thu, 19 Nov

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Delta flights from London Heathrow Airport to Ontario

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

Delta

12 Sept

LHR10:55London Heathrow

19h 09m

1 stop

ONT22:04Ontario

19 Sept

ONT18:00Ontario

13h 35m

1 stop

LHR15:35London Heathrow

€584

Delta

18 Aug

LHR10:55London Heathrow

13h 29m

1 stop

ONT16:24Ontario

25 Aug

ONT18:01Ontario

13h 34m

1 stop

LHR15:35London Heathrow

€588

Delta

11 Sept

LHR11:15London Heathrow

16h 50m

1 stop

ONT20:05Ontario

19 Sept

ONT13:04Ontario

12h 56m

1 stop

LHR10:00London Heathrow

€589

British Airways flights from London Heathrow Airport to Ontario

Our best British Airways deals on London Heathrow Airport to Ontario flight tickets

British Airways

22 Nov

LHR13:15London Heathrow

13h 50m

1 stop

ONT19:05Ontario

15 Dec

ONT14:56Ontario

13h 19m

1 stop

LHR12:15London Heathrow

€594

British Airways

14 Oct

LHR16:10London Heathrow

13h 44m

1 stop

ONT21:54Ontario

20 Oct

ONT13:05Ontario

13h 25m

1 stop

LHR10:30London Heathrow

€598

British Airways

14 Aug

LHR11:00London Heathrow

15h 15m

1 stop

ONT18:15Ontario

27 Aug

ONT12:33Ontario

14h 22m

1 stop

LHR10:55London Heathrow

€601

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

Cheapest return flight

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 9/9

08:40-20:01

2 stops19h 21m

Ontario

Wed 23/9

05:00-12:35

1 stop23h 35m

€527

Fastest return journey

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Thu 17/9

09:30-21:59

2 stops20h 29m

Ontario

Mon 21/9

13:56-11:10

1 stop13h 14m

€527

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Fri 25/9

07:30-20:31

2 stops21h 01m

Ontario

Wed 30/9

16:03-14:10

1 stop14h 07m

€528

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Thu 17/9

09:30-21:59

2 stops20h 29m

Ontario

Mon 21/9

13:56-11:10

1 stop13h 14m

€531

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Thu 17/9

09:30-21:59

2 stops20h 29m

Ontario

Mon 21/9

13:56-11:10

1 stop13h 14m

€532

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Thu 17/9

09:30-21:59

2 stops20h 29m

Ontario

Mon 21/9

13:56-11:10

1 stop13h 14m

€538

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 18/11

06:35-20:56

2 stops22h 21m

Ontario

Thu 19/11

06:00-07:40

1 stop17h 40m

€542

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 18/11

06:35-20:56

2 stops22h 21m

Ontario

Thu 19/11

06:00-10:15

1 stop20h 15m

€543

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 18/11

07:30-20:56

2 stops21h 26m

Ontario

Thu 19/11

06:00-10:15

1 stop20h 15m

€546

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 18/11

06:35-20:56

2 stops22h 21m

Ontario

Thu 19/11

05:00-08:30

2 stops19h 30m

€549

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 February, then you should wait until January to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of €485.

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

Fastest flight time	14h 03m
Direct flights	None

The fastest flight from London Heathrow Airport to Ontario takes 14h 03m

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

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Frequently asked questions about flying from London Heathrow Airport to Ontario

How far is London Heathrow to Ontario by plane?
There are 8703.4 km between London Heathrow and Ontario. Flights usually cover this in 14h 03m, 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.