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

British Airways, United Airlines, and Alaska Airlines are the most popular carriers operating from London Heathrow to Ontario

Which stopover airport has the shortest connection time from London Heathrow Airport to Ontario?

Phoenix (PHX) has the shortest average stopover time for this route: 2h 17m.

Which airport is the most popular for stopovers for flights between London Heathrow Airport and Ontario?

Phoenix (PHX) was the most common stop: 40% of momondo users choosing one-stop flights on this route connected there.

Which stopover airport offers the lowest fares from London Heathrow Airport to Ontario?

Flights via Seattle (SEA) offer the lowest average return price of £533.

Which stopover airport has the shortest travel time from London Heathrow Airport to Ontario?

Flights connecting via Phoenix (PHX) have the shortest average one-way travel time: 14h 17m.

Which airlines fly to Ontario?

Virgin Atlantic, British Airways and United Airlines are the top three most popular airlines that fly to Ontario from London Heathrow Airport according to our data. Virgin Atlantic is the first choice among our users, with 46% of people opting to fly with this airline when travelling to Ontario. Keep in mind that there are 20 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.

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 were last updated today.

How many operators does momondo search for flights from London Heathrow Airport to Ontario Airport?

The number of operators available for flights from London Heathrow Airport to Ontario Airport is 3 as of June 2026.

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 travel and health documents you'll need for your trip to Ontario Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Ontario Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

£347 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 £540 to £650. The lowest price recently found on this route was £419.

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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 - 20:06

LHR

ONT

17h 36m

2 stops

18:36 - 20:35

ONT

LHR

17h 59m

2 stops

£419United Airlines

Fri, 30 Oct - Mon, 2 Nov

07:30 - 18:16

LHR

ONT

18h 46m

2 stops

13:18 - 20:40

ONT

LHR

23h 22m

2 stops

£420United Airlines

Sat, 29 Aug - Wed, 2 Sep

07:30 - 20:56

LHR

ONT

20h 26m

2 stops

05:00 - 09:40

ONT

LHR

21h 40m

1 stop

£421United Airlines

Sun, 25 Oct - Sat, 31 Oct

13:40 - 21:55

LHR

ONT

16h 15m

1 stop

16:20 - 14:10

ONT

LHR

13h 50m

1 stop

£442United Airlines

Thu, 9 Jul - Sat, 25 Jul

10:35 - 18:16

LHR

ONT

15h 41m

1 stop

13:24 - 09:40

ONT

LHR

12h 16m

1 stop

£444United Airlines

Wed, 23 Sep - Wed, 30 Sep

13:40 - 21:55

LHR

ONT

16h 15m

1 stop

13:50 - 11:10

ONT

LHR

13h 20m

1 stop

£445United Airlines

Thu, 9 Jul - Tue, 21 Jul

09:30 - 12:46

LHR

ONT

35h 16m

2 stops

05:00 - 06:30

ONT

LHR

17h 30m

2 stops

£448Air Canada

Wed, 23 Sep - Sun, 27 Sep

09:30 - 12:46

LHR

ONT

35h 16m

2 stops

05:00 - 06:30

ONT

LHR

17h 30m

2 stops

£449Air Canada

Wed, 23 Sep - Sun, 27 Sep

09:30 - 12:47

LHR

ONT

35h 17m

2 stops

05:00 - 10:00

ONT

LHR

21h 00m

2 stops

£460Air Canada

Wed, 8 Jul - Mon, 13 Jul

08:30 - 20:53

LHR

ONT

20h 23m

2 stops

05:00 - 08:30

ONT

LHR

19h 30m

2 stops

£463Air Canada

Sun, 6 Sep - Sun, 6 Dec

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Air Canada flights from London Heathrow Airport to Ontario

Our best Air Canada deals on London Heathrow Airport to Ontario flight tickets

Air Canada

23 Sept

LHR09:30London Heathrow

35h 16m

2 stops

ONT12:46Ontario

27 Sept

ONT05:00Ontario

17h 30m

2 stops

LHR06:30London Heathrow

£448

Air Canada

23 Sept

LHR09:30London Heathrow

35h 16m

2 stops

ONT12:46Ontario

27 Sept

ONT05:00Ontario

17h 30m

2 stops

LHR06:30London Heathrow

£449

Air Canada

8 Jul

LHR09:30London Heathrow

35h 17m

2 stops

ONT12:47Ontario

13 Jul

ONT05:00Ontario

21h 00m

2 stops

LHR10:00London Heathrow

£460

Virgin Atlantic flights from London Heathrow Airport to Ontario

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

Virgin Atlantic

11 Sept

LHR17:45London Heathrow

36h 55m

1 stop

ONT22:40Ontario

15 Sept

ONT18:00Ontario

13h 35m

1 stop

LHR15:35London Heathrow

£488

Virgin Atlantic

14 Jul

LHR10:55London Heathrow

20h 53m

1 stop

ONT23:48Ontario

13 Aug

ONT06:20Ontario

25h 15m

1 stop

LHR15:35London Heathrow

£491

Virgin Atlantic

23 Dec

LHR10:45London Heathrow

13h 28m

1 stop

ONT16:13Ontario

14 Jan

ONT07:00Ontario

15h 25m

1 stop

LHR06:25London Heathrow

£494

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 30/10

09:30-20:06

2 stops17h 36m

Ontario

Mon 2/11

18:36-20:35

2 stops17h 59m

£419

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Sat 29/8

07:30-18:16

2 stops18h 46m

Ontario

Wed 2/9

13:18-20:40

2 stops23h 22m

£420

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Sun 25/10

07:30-20:56

2 stops20h 26m

Ontario

Sat 31/10

05:00-09:40

1 stop21h 40m

£421

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Thu 9/7

13:40-21:55

1 stop16h 15m

Ontario

Sat 25/7

16:20-14:10

1 stop13h 50m

£442

Fastest return journey

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 23/9

10:35-18:16

1 stop15h 41m

Ontario

Wed 30/9

13:24-09:40

1 stop12h 16m

£444

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Thu 9/7

13:40-21:55

1 stop16h 15m

Ontario

Tue 21/7

13:50-11:10

1 stop13h 20m

£444

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 23/9

09:30-12:46

2 stops35h 16m

Ontario

Sun 27/9

05:00-06:30

2 stops17h 30m

£448

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 23/9

09:30-12:46

2 stops35h 16m

Ontario

Sun 27/9

05:00-06:30

2 stops17h 30m

£449

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 8/7

09:30-12:47

2 stops35h 17m

Ontario

Mon 13/7

05:00-10:00

2 stops21h 00m

£460

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Sun 6/9

08:30-20:53

2 stops20h 23m

Ontario

Sun 6/12

05:00-08:30

2 stops19h 30m

£463

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

Stopovers

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?

The month of February is, on average, the cheapest month to fly to Ontario from London Heathrow Airport, with most prices found around £404. If you’re not able to fly to Ontario in February, then January is your next best option. Flight prices from London Heathrow Airport to Ontario during January average around £419.

Can stopping save me money on London Heathrow Airport to Ontario flights?

You could potentially save up to 26% on your flight if you consider stops on a London Heathrow Airport to Ontario flight.

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	13h 40m
Direct flights	None

The fastest flight from London Heathrow Airport to Ontario takes 13h 40m

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?
Ontario is 5408.1 mi away from London Heathrow. By plane, this route typically takes 13h 40m.
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 were last updated today.
How many operators does momondo search for flights from London Heathrow Airport to Ontario Airport?
The number of operators available for flights from London Heathrow Airport to Ontario Airport is 3 as of June 2026.
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 travel and health documents you'll need for your trip to Ontario Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Ontario Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from London Heathrow Airport to Ontario?
momondo data reveals that the most frequently booked airline on the route from London Heathrow Airport to Ontario is British Airways, representing 61% of all bookings. The subsequent popular airlines are Virgin Atlantic at 29% and United Airlines at 11%.

Best airlines flying from London Heathrow Airport to Ontario

Compare and see reviews for airlines that fly from London Heathrow Airport to Ontario with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom £376	Free Cancellation	Rating 7.4 9,896 reviews	Search United Airlines flights
Virgin Atlantic	PriceFrom £380	Free Cancellation	Rating 7.5 690 reviews	Search Virgin Atlantic flights
British Airways	PriceFrom £394	Free Cancellation	Rating 6.7 8,070 reviews	Search British Airways flights

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Ontario from London.

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

Flights from London to Ontario with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once you have performed a search for London to Ontario flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Price alerts on flights to Ontario from London are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.