Which airlines fly to Ontario?

British Airways, Virgin Atlantic and Aer Lingus are the top three most popular airlines that fly to Ontario from United Kingdom according to our data. British Airways 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.

What is the cheapest airline that flies from United Kingdom to Ontario?

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

How long does it take to fly to Ontario?

On average, it takes 12h 50m to fly from United Kingdom to Ontario if you fly out of London (the most popular airport in United Kingdom) and into Los Angeles (the most popular airport in Ontario). If you’re flying out of Edinburgh and into Los Angeles, then the flight time is around 14h 05m.

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

Prices for flights from United Kingdom to Ontario Airport are refreshed on a daily basis.

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

There are 3 operators available for flights from United Kingdom to Ontario Airport as of July 2026.

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

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from United Kingdom 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 license 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.

£278 Cheap Flights from the United Kingdom to Ontario in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from the United Kingdom to Los Angeles

Return

One-way

Last minute

Recent return flight deals from the United Kingdom to Los Angeles

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

£451United 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

£452United 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

£455United Airlines

Wed, 16 Sep - Mon, 21 Sep

10:55 - 16:35

LHR

ONT

13h 40m

1 stop

06:20 - 15:35

ONT

LHR

25h 15m

1 stop

£462Virgin Atlantic

Sat, 26 Sep - Wed, 30 Sep

11:40 - 16:35

LHR

ONT

36h 55m

2 stops

13:04 - 06:45

ONT

LHR

33h 41m

2 stops

£463Virgin Atlantic

Wed, 16 Sep - Wed, 30 Sep

10:55 - 16:35

LHR

ONT

13h 40m

1 stop

11:54 - 11:20

ONT

LHR

15h 26m

1 stop

£463Virgin Atlantic

Wed, 16 Sep - Wed, 30 Sep

14:45 - 23:42

LHR

ONT

15h 57m

1 stop

06:00 - 12:20

ONT

LHR

22h 20m

1 stop

£464Alaska Airlines

Sun, 25 Oct - Sun, 1 Nov

17:00 - 23:24

LHR

ONT

14h 24m

1 stop

15:14 - 15:05

ONT

LHR

15h 51m

1 stop

£464Alaska Airlines

Fri, 25 Sep - Fri, 2 Oct

10:15 - 18:44

LHR

ONT

15h 29m

1 stop

14:56 - 12:00

ONT

LHR

13h 04m

1 stop

£479British Airways

Wed, 28 Oct - Tue, 8 Dec

10:05 - 23:43

LHR

ONT

21h 38m

1 stop

12:46 - 12:00

ONT

LHR

15h 14m

1 stop

£479British Airways

Wed, 4 Nov - Fri, 4 Dec

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SWISS flights from United Kingdom to Ontario

Our best SWISS deals on United Kingdom to Ontario flight tickets

SWISS

3 Sept

LCY19:15London City

35h 20m

2 stops

ONT22:35Ontario

24 Sept

ONT13:52Ontario

37h 48m

2 stops

LCY11:40London City

£568

SWISS

10 Aug

LHR14:50London Heathrow

13h 52m

1 stop

ONT20:42Ontario

17 Aug

ONT13:18Ontario

12h 22m

1 stop

LHR09:40London Heathrow

£585

KLM flights from United Kingdom to Ontario

Our best KLM deals on United Kingdom to Ontario flight tickets

KLM

10 Sept

LHR10:55London Heathrow

13h 40m

1 stop

ONT16:35Ontario

23 Sept

ONT13:04Ontario

12h 56m

1 stop

LHR10:00London Heathrow

£468

KLM

5 Aug

LHR06:30London Heathrow

17h 54m

2 stops

ONT16:24Ontario

14 Aug

ONT12:00Ontario

17h 15m

1 stop

LHR13:15London Heathrow

£605

KLM

8 Oct

ABZ10:35Aberdeen Dyce

20h 08m

2 stops

ONT22:43Ontario

11 Oct

ONT13:24Ontario

19h 11m

2 stops

ABZ16:35Aberdeen Dyce

£632

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

£451

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

£452

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

£454

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Sat 26/9

10:55-16:35

1 stop13h 40m

Ontario

Wed 30/9

06:20-15:35

1 stop25h 15m

£462

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 16/9

11:40-16:35

2 stops36h 55m

Ontario

Wed 30/9

13:04-06:45

2 stops33h 41m

£463

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 16/9

10:55-16:35

1 stop13h 40m

Ontario

Wed 30/9

11:54-11:20

1 stop15h 26m

£463

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Sun 25/10

14:45-23:42

1 stop15h 57m

Ontario

Sun 1/11

06:00-12:20

1 stop22h 20m

£464

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Fri 25/9

17:00-23:24

1 stop14h 24m

Ontario

Fri 2/10

15:14-15:05

1 stop15h 51m

£464

Fastest return journey

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 28/10

10:15-18:44

1 stop15h 29m

Ontario

Tue 8/12

14:56-12:00

1 stop13h 04m

£479

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 4/11

10:05-23:43

1 stop21h 38m

Ontario

Fri 4/12

12:46-12:00

1 stop15h 14m

£479

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 United Kingdom 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

Other information

What is the cheapest month to fly to Ontario?

The month of February is, on average, the cheapest month to fly to Ontario from United Kingdom, with most prices found around £435. If you’re not able to fly to Ontario in February, then September is your next best option. Flight prices from United Kingdom to Ontario during September average around £438.

Can stopping save me money on United Kingdom to Ontario flights?

You could potentially save up to 47% on your flight if you consider stops on a United Kingdom to Ontario flight.

Cheap United Kingdom to Ontario flight deals and tips

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

Fastest flight time	13h 44m
Direct flights	None

The fastest flight from United Kingdom to Ontario takes 13h 44m

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

Search flight deals

Frequently asked questions about flying from the United Kingdom to Ontario

When did momondo last update prices for flights from United Kingdom to Ontario Airport?
Prices for flights from United Kingdom to Ontario Airport are refreshed on a daily basis.
How many operators does momondo search for flights from United Kingdom to Ontario Airport?
There are 3 operators available for flights from United Kingdom to Ontario Airport as of July 2026.
How old do you have to be to fly from United Kingdom to Ontario Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from United Kingdom 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 license 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.

Best airlines flying from United Kingdom to Ontario

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

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom £373	Free Cancellation	Rating 7.4 10,046 reviews	Search United Airlines flights
Virgin Atlantic	PriceFrom £377	Free Cancellation	Rating 7.5 694 reviews	Search Virgin Atlantic flights
British Airways	PriceFrom £403	Free Cancellation	Rating 6.7 8,127 reviews	Search British Airways flights

Why use momondo?

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

It is quick and easy to find United Kingdom to Ontario flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Ontario that suits you.

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

Flights from United Kingdom 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 United Kingdom to Ontario?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Ontario from United Kingdom.

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

Yes. momondo can track prices for United Kingdom to Ontario flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.