What airlines fly to Ontario?

British Airways, Virgin Atlantic and American Airlines are the top three most popular airlines that fly to Ontario from London according to our data. British Airways is the first choice among our users, with 53% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 11 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.

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

British Airways, Iberia, and Lufthansa are the most popular carriers operating from London to Ontario

When did momondo last update prices for flights from London to Ontario Airport?

Prices for flights from London to Ontario Airport are updated daily.

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

As of January 2026, there is 1 operator available to choose from for flights from London to Ontario Airport.

How old do you have to be to fly from London to Ontario Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London 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.

$332 Cheap Flights from London to Ontario in 2026

Q: What is the typical price of a round-trip flight between London and Ontario?

Prices are currently low for flights on this route. Typical prices usually range from $528 to $691. The lowest price recently found on this route was $478.

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Find the cheapest flights from London to Los Angeles

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10:00 am - 10:37 pm

LHR

ONT

44h 37m

2 stops

1:20 pm - 7:05 am

ONT

LHR

34h 45m

2 stops

$478Virgin Atlantic

ن, مارس 2 - ن, مارس 9

2:30 pm - 10:37 pm

LHR

ONT

16h 07m

1 stop

1:20 pm - 10:00 am

ONT

LHR

13h 40m

1 stop

$496Virgin Atlantic

ن, مارس 2 - ن, مارس 9

9:30 am - 10:57 pm

LHR

ONT

20h 27m

2 stops

6:37 pm - 8:35 pm

ONT

LHR

18h 58m

2 stops

$500United Airlines

ن, مارس 16 - ن, مارس 23

9:30 am - 8:50 pm

LHR

ONT

19h 20m

2 stops

1:40 pm - 12:00 pm

ONT

LHR

14h 20m

1 stop

$510United Airlines

خ, فبراير 26 - خ, مارس 5

12:30 pm - 9:05 pm

LHR

ONT

16h 35m

1 stop

1:10 pm - 10:00 am

ONT

LHR

12h 50m

1 stop

$523Delta

ث, فبراير 10 - ن, مارس 2

10:25 am - 10:37 pm

LGW

ONT

20h 12m

2 stops

2:00 pm - 4:00 pm

ONT

LGW

18h 00m

2 stops

$542Delta

ن, أبريل 27 - س, مايو 9

11:20 am - 10:06 am

LGW

ONT

29h 46m

2 stops

6:00 am - 10:50 am

ONT

LGW

21h 50m

2 stops

$581Multiple Airlines

ث, مارس 17 - ث, مارس 24

11:45 am - 10:29 pm

LGW

ONT

42h 44m

2 stops

7:00 am - 10:50 am

ONT

LGW

20h 50m

2 stops

$621Iberia

ر, مارس 4 - ث, مارس 24

7:40 pm - 11:59 pm

LGW

ONT

35h 19m

2 stops

2:39 pm - 8:00 pm

ONT

LGW

21h 21m

2 stops

$644Iberia

ث, مارس 17 - ن, مارس 30

8:30 pm - 10:09 pm

LCY

ONT

33h 39m

2 stops

10:59 pm - 5:20 pm

ONT

LCY

34h 21m

2 stops

$1,545Multiple Airlines

ن, يونيو 22 - س, يوليو 11

British Airways flights from London to Ontario

Our best British Airways deals on London to Ontario flight tickets

British Airways

Feb 19

LHR4:30 pmLondon Heathrow

15h 29m

1 stop

ONT11:59 pmOntario

Feb 24

ONT5:02 pmOntario

12h 13m

1 stop

LHR1:15 pmLondon Heathrow

$545

British Airways

Feb 6

LHR2:25 pmLondon Heathrow

15h 48m

1 stop

ONT10:13 pmOntario

Mar 17

ONT10:56 amOntario

12h 54m

1 stop

LHR6:50 amLondon Heathrow

$570

British Airways

Feb 12

LHR4:30 pmLondon Heathrow

15h 29m

1 stop

ONT11:59 pmOntario

Feb 15

ONT5:02 pmOntario

12h 13m

1 stop

LHR1:15 pmLondon Heathrow

$575

KLM flights from London to Ontario

Our best KLM deals on London to Ontario flight tickets

KLM

Mar 24

LHR2:30 pmLondon Heathrow

15h 04m

1 stop

ONT10:34 pmOntario

Apr 22

ONT1:29 pmOntario

12h 31m

1 stop

LHR10:00 amLondon Heathrow

$534

KLM

Feb 9

LHR3:50 pmLondon Heathrow

37h 15m

1 stop

ONT9:05 pmOntario

Feb 15

ONT10:20 pmOntario

29h 20m

1 stop

LHR11:40 amLondon Heathrow

$550

KLM

Feb 19

LHR3:50 pmLondon Heathrow

37h 15m

1 stop

ONT9:05 pmOntario

Feb 24

ONT1:15 pmOntario

14h 25m

1 stop

LHR11:40 amLondon Heathrow

$552

Fly from

Fly to

Route

Depart

Return

Price

LondonOntario

LHR - ONT

LHRONT

London Heathrow

ن 3/2

10:00 am-10:37 pm

2 stops44h 37m

Ontario

ن 3/9

1:20 pm-7:05 am

2 stops34h 45m

$478

LondonOntario

LHR - ONT

LHRONT

London Heathrow

ن 3/2

2:30 pm-10:37 pm

1 stop16h 07m

Ontario

ن 3/9

1:20 pm-10:00 am

1 stop13h 40m

$496

LondonOntario

LHR - ONT

LHRONT

London Heathrow

ن 3/16

9:30 am-10:57 pm

2 stops20h 27m

Ontario

ن 3/23

6:37 pm-8:35 pm

2 stops18h 58m

$500

LondonOntario

LHR - ONT

LHRONT

London Heathrow

خ 2/26

9:30 am-8:50 pm

2 stops19h 20m

Ontario

خ 3/5

1:40 pm-12:00 pm

1 stop14h 20m

$510

LondonOntario

LHR - ONT

LHRONT

London Heathrow

ث 2/10

12:30 pm-9:05 pm

1 stop16h 35m

Ontario

ن 3/2

1:10 pm-10:00 am

1 stop12h 50m

$523

LondonOntario

LGW - ONT

LGWONT

London Gatwick

ن 4/27

10:25 am-10:37 pm

2 stops20h 12m

Ontario

س 5/9

2:00 pm-4:00 pm

2 stops18h 00m

$542

LondonOntario

LGW - ONT

LGWONT

London Gatwick

ث 3/17

11:20 am-10:06 am

2 stops29h 46m

Ontario

ث 3/24

6:00 am-10:50 am

2 stops21h 50m

$581

LondonOntario

LGW - ONT

LGWONT

London Gatwick

ر 3/4

11:45 am-10:29 pm

2 stops42h 44m

Ontario

ث 3/24

7:00 am-10:50 am

2 stops20h 50m

$621

LondonOntario

LGW - ONT

LGWONT

London Gatwick

ث 3/17

7:40 pm-11:59 pm

2 stops35h 19m

Ontario

ن 3/30

2:39 pm-8:00 pm

2 stops21h 21m

$644

LondonOntario

LCY - ONT

LCYONT

London City

ن 6/22

8:30 pm-10:09 pm

2 stops33h 39m

Ontario

س 7/11

10:59 pm-5:20 pm

2 stops34h 21m

$1,545

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from London 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 and Ontario?

What is the cheapest month to fly to Ontario?

In general, January is the cheapest month to fly from London to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $546. If you aren’t able to travel during the month of January, then book flights to Ontario from London during September instead. Flights to Ontario in September, while not as cheap as those in January, still average around $547.

How far in advance should I book a flight to Ontario?

You are more likely to see cheaper flights to Ontario from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Ontario for around $681 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ontario from London for as low as $527 on momondo.

Can stopping save me money on London to Ontario flights?

You could potentially save up to 3% on your flight if you consider stops on a London to Ontario flight.

When to book flights from London to Ontario

Are you open to changing your travel dates? Check out the ideal times to fly from London to Ontario according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap London to Ontario (LON to ONT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London to Ontario

Fastest flight time	13h 19m
Direct flights	None

The fastest flight from London to Ontario takes 13h 19m

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

Search flight deals

How far is London to Ontario by plane?
The distance between London and Ontario is about 5417.5 mi. Typically, this will take 13h 19m by plane in normal conditions.
When did momondo last update prices for flights from London to Ontario Airport?
Prices for flights from London to Ontario Airport are updated daily.
How many operators does momondo search for flights from London to Ontario Airport?
As of January 2026, there is 1 operator available to choose from for flights from London to Ontario Airport.
How old do you have to be to fly from London to Ontario Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London 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.

Best airlines flying from London to Ontario

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

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $497	Free Cancellation	Rating 7.4 9,219 reviews		Search United Airlines 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?

Yes. momondo allows you to filter the results for London to Ontario flights to just show those with flexible booking policies.

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

momondo provides multiple filters to help you find the best flight to Ontario from London. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Of course. momondo tracks the price of London to Ontario flights. All you need is a valid email address and we will do the rest; it is that quick and easy.