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

JetBlue, British Airways, and United Airlines 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.

€466 Cheap Flights from London Heathrow Airport to Ontario (LHR-ONT) in 2025

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 €497 to €749. The lowest price recently found on this route was €466.

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Find the cheapest flights from London Heathrow Airport to Los Angeles (LHR-ONT)

Round-trip

One-way

Last minute

Cheap return flights

20:00 - 18:54LHR-ONT

30h 54m2 stops

23:59 - 09:00ONT-LHR

25h 01m1 stop

€466British Airways

Find Deal

Sun, 7 Sep - Sun, 14 Sep

12:00 - 18:54LHR-ONT

14h 54m1 stop

10:54 - 09:00ONT-LHR

14h 06m1 stop

€471British Airways

Find Deal

Tue, 9 Sep - Wed, 17 Sep

15:10 - 22:33LHR-ONT

15h 23m1 stop

16:49 - 12:50ONT-LHR

12h 01m1 stop

€472British Airways

Find Deal

Mon, 29 Sep - Mon, 6 Oct

15:40 - 21:48LHR-ONT

14h 08m1 stop

16:45 - 12:50ONT-LHR

12h 05m1 stop

€486American Airlines

Find Deal

Thu, 11 Sep - Wed, 24 Sep

08:40 - 22:41LHR-ONT

22h 01m2 stops

11:48 - 11:20ONT-LHR

15h 32m1 stop

€488Delta

Find Deal

Thu, 9 Oct - Thu, 16 Oct

10:45 - 16:14LHR-ONT

13h 29m1 stop

12:00 - 09:00ONT-LHR

13h 00m1 stop

€504

Find Deal

Wed, 10 Dec - Sun, 14 Dec

06:30 - 17:10LHR-ONT

18h 40m2 stops

07:05 - 07:40ONT-LHR

16h 35m2 stops

€505Delta

Find Deal

Thu, 9 Oct - Thu, 16 Oct

14:50 - 20:24LHR-ONT

13h 34m1 stop

13:15 - 09:40ONT-LHR

12h 25m1 stop

€572United Airlines

Find Deal

Wed, 8 Oct - Wed, 15 Oct

10:45 - 16:14LHR-ONT

13h 29m1 stop

11:56 - 09:00ONT-LHR

13h 04m1 stop

€587

Find Deal

Sat, 6 Dec - Mon, 22 Dec

09:30 - 20:43LHR-ONT

19h 13m2 stops

05:10 - 09:40ONT-LHR

20h 30m1 stop

€593United Airlines

Find Deal

Wed, 10 Sep - Mon, 15 Sep

Delta flights from London Heathrow Airport to Ontario

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

Delta

9 Oct

LHR06:30London Heathrow

18h 40m

2 stops

ONT17:10Ontario

16 Oct

ONT11:48Ontario

18h 27m

1 stop

LHR14:15London Heathrow

€488

Find similar

Delta

9 Oct

LHR09:55London Heathrow

20h 46m

2 stops

ONT22:41Ontario

16 Oct

ONT11:36Ontario

15h 49m

2 stops

LHR11:25London Heathrow

€505

Find similar

Delta

20 Oct

LHR06:30London Heathrow

18h 40m

2 stops

ONT17:10Ontario

5 Dec

ONT13:00Ontario

13h 00m

1 stop

LHR10:00London Heathrow

€528

Find similar

British Airways flights from London Heathrow Airport to Ontario

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

British Airways

7 Sept

LHR20:00London Heathrow

30h 54m

2 stops

ONT18:54Ontario

14 Sept

ONT23:59Ontario

25h 01m

1 stop

LHR09:00London Heathrow

€466

Find similar

British Airways

4 Sept

LHR11:30London Heathrow

39h 24m

2 stops

ONT18:54Ontario

11 Sept

ONT08:15Ontario

20h 30m

1 stop

LHR12:45London Heathrow

€468

Find similar

British Airways

9 Sept

LHR12:00London Heathrow

14h 54m

1 stop

ONT18:54Ontario

17 Sept

ONT10:54Ontario

14h 06m

1 stop

LHR09:00London Heathrow

€471

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

Sun 7/9

20:00-18:54

2 stops30h 54m

Ontario

Sun 14/9

23:59-09:00

1 stop25h 01m

€466

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Tue 9/9

12:00-18:54

1 stop14h 54m

Ontario

Wed 17/9

10:54-09:00

1 stop14h 06m

€471

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Mon 29/9

15:10-22:33

1 stop15h 23m

Ontario

Mon 6/10

16:49-12:50

1 stop12h 01m

€472

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Thu 11/9

15:40-21:48

1 stop14h 08m

Ontario

Wed 24/9

16:45-12:50

1 stop12h 05m

€486

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Thu 9/10

08:40-22:41

2 stops22h 01m

Ontario

Thu 16/10

11:48-11:20

1 stop15h 32m

€488

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 10/12

10:45-16:14

1 stop13h 29m

Ontario

Sun 14/12

12:00-09:00

1 stop13h 00m

€504

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Thu 9/10

06:30-17:10

2 stops18h 40m

Ontario

Thu 16/10

07:05-07:40

2 stops16h 35m

€505

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 8/10

14:50-20:24

1 stop13h 34m

Ontario

Wed 15/10

13:15-09:40

1 stop12h 25m

€572

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Sat 6/12

10:45-16:14

1 stop13h 29m

Ontario

Mon 22/12

11:56-09:00

1 stop13h 04m

€587

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 10/9

09:30-20:43

2 stops19h 13m

Ontario

Mon 15/9

05:10-09:40

1 stop20h 30m

€593

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 €504.

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 €607 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 €492 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 29m, 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.