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

Alaska Airlines is the most popular carrier 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.

€409 Cheap Flights from London Heathrow Airport to Ontario in 2026

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.

09:30 - 20:20

LHR

ONT

18h 50m

2 stops

13:18 - 07:25

ONT

LHR

34h 07m

1 stop

€527United Airlines

Fri, 11 Dec - Sun, 27 Dec

09:00 - 20:15

LHR

ONT

19h 15m

2 stops

06:00 - 07:40

ONT

LHR

17h 40m

1 stop

€528United Airlines

Wed, 18 Nov - Thu, 19 Nov

08:40 - 20:01

LHR

ONT

19h 21m

2 stops

13:56 - 14:10

ONT

LHR

16h 14m

1 stop

€530United Airlines

Wed, 16 Sep - Mon, 21 Sep

08:40 - 20:01

LHR

ONT

19h 21m

2 stops

05:00 - 12:35

ONT

LHR

23h 35m

1 stop

€531United Airlines

Mon, 24 Aug - Sun, 6 Sep

06:35 - 20:51

LHR

ONT

22h 16m

2 stops

13:29 - 09:40

ONT

LHR

12h 11m

1 stop

€532United Airlines

Wed, 18 Nov - Sat, 21 Nov

07:30 - 20:51

LHR

ONT

21h 21m

2 stops

06:00 - 07:40

ONT

LHR

17h 40m

1 stop

€533United Airlines

Wed, 18 Nov - Thu, 19 Nov

07:25 - 22:59

LHR

ONT

23h 34m

2 stops

13:18 - 12:25

ONT

LHR

15h 07m

1 stop

€534United Airlines

Sat, 12 Sep - Sat, 19 Sep

07:25 - 18:11

LHR

ONT

18h 46m

2 stops

05:00 - 09:40

ONT

LHR

20h 40m

1 stop

€535United Airlines

Fri, 4 Sep - Fri, 11 Sep

09:30 - 21:59

LHR

ONT

20h 29m

2 stops

13:56 - 11:10

ONT

LHR

13h 14m

1 stop

€536United Airlines

Thu, 17 Sep - Mon, 21 Sep

08:40 - 22:35

LHR

ONT

21h 55m

2 stops

13:24 - 09:40

ONT

LHR

12h 16m

1 stop

€538United Airlines

Fri, 4 Sep - Fri, 25 Sep

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Virgin Atlantic flights from London Heathrow Airport to Ontario

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

Virgin Atlantic

3 Sept

LHR11:45London Heathrow

19h 00m

2 stops

ONT22:45Ontario

24 Sept

ONT18:00Ontario

13h 35m

1 stop

LHR15:35London Heathrow

€562

Virgin Atlantic

27 Aug

LHR11:40London Heathrow

19h 05m

1 stop

ONT22:45Ontario

9 Sept

ONT11:54Ontario

19h 41m

1 stop

LHR15:35London Heathrow

€583

Virgin Atlantic

11 Sept

LHR11:45London Heathrow

18h 55m

2 stops

ONT22:40Ontario

18 Sept

ONT18:00Ontario

13h 35m

1 stop

LHR15:35London Heathrow

€585

Delta flights from London Heathrow Airport to Ontario

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

Delta

27 Aug

LHR06:30London Heathrow

20h 00m

2 stops

ONT18:30Ontario

9 Sept

ONT11:54Ontario

19h 41m

1 stop

LHR15:35London Heathrow

€574

Delta

9 Sept

LHR10:55London Heathrow

13h 40m

1 stop

ONT16:35Ontario

16 Sept

ONT11:54Ontario

15h 26m

1 stop

LHR11:20London Heathrow

€578

Delta

8 Dec

LHR08:55London Heathrow

19h 51m

1 stop

ONT20:46Ontario

30 Dec

ONT22:59Ontario

24h 51m

1 stop

LHR07:50London Heathrow

€580

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

Fri 11/12

09:30-20:20

2 stops18h 50m

Ontario

Sun 27/12

13:18-07:25

1 stop34h 07m

€527

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 18/11

09:00-20:15

2 stops19h 15m

Ontario

Thu 19/11

06:00-07:40

1 stop17h 40m

€528

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 16/9

08:40-20:01

2 stops19h 21m

Ontario

Mon 21/9

13:56-14:10

1 stop16h 14m

€530

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Mon 24/8

08:40-20:01

2 stops19h 21m

Ontario

Sun 6/9

05:00-12:35

1 stop23h 35m

€531

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 18/11

06:35-20:51

2 stops22h 16m

Ontario

Sat 21/11

13:29-09:40

1 stop12h 11m

€532

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 18/11

07:30-20:51

2 stops21h 21m

Ontario

Thu 19/11

06:00-07:40

1 stop17h 40m

€533

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Sat 12/9

07:25-22:59

2 stops23h 34m

Ontario

Sat 19/9

13:18-12:25

1 stop15h 07m

€534

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Fri 4/9

07:25-18:11

2 stops18h 46m

Ontario

Fri 11/9

05:00-09:40

1 stop20h 40m

€535

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

€536

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Fri 4/9

08:40-22:35

2 stops21h 55m

Ontario

Fri 25/9

13:24-09:40

1 stop12h 16m

€538

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?

Prices are currently low for flights on this route.

Typical prices usually range from €620 to €786.
The lowest price recently found on this route was €527.

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	27h 05m
Direct flights	None

The fastest flight from London Heathrow Airport to Ontario takes 27h 05m

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

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 27h 05m, 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.