What airlines fly to Ontario?

British Airways, American Airlines and Virgin Atlantic 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 59% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 12 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?

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

How long does it take to fly to Ontario?

Average flight duration from United Kingdom to Ontario depends on which airport you fly into and out of. Flying from London to Los Angeles is 11h 12m on average, while flying from Birmingham to Los Angeles is 14h 05m on average. Los Angeles is the most popular airport in Ontario.

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

Prices for flights from United Kingdom to Ontario Airport refresh daily.

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

As of December 2025, there is 1 operator available to choose from for flights from United Kingdom to Ontario Airport.

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.

$419 Cheap Flights from the United Kingdom to Ontario in 2025/26

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Find the cheapest flights from the United Kingdom to Los Angeles

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2:30 pm - 10:51 pm

LHR

ONT

16h 21m1 stop

6:00 am - 10:00 am

ONT

LHR

20h 00m1 stop

$484Virgin Atlantic

Mon, Jan 26 - Mon, Feb 2

12:20 pm - 10:44 pm

LHR

ONT

18h 24m1 stop

1:10 pm - 10:00 am

ONT

LHR

12h 50m1 stop

$485Virgin Atlantic

Mon, Feb 9 - Mon, Feb 16

9:30 am - 10:53 pm

LHR

ONT

21h 23m2 stops

6:10 am - 9:20 pm

ONT

LHR

31h 10m2 stops

$492United Airlines

Tue, Feb 10 - Tue, Feb 17

7:30 am - 9:58 pm

LHR

ONT

22h 28m2 stops

5:05 am - 6:20 am

ONT

LHR

17h 15m2 stops

$497United Airlines

Thu, Jan 22 - Mon, Jan 26

10:05 am - 10:48 pm

LHR

ONT

20h 43m1 stop

10:58 am - 11:40 am

ONT

LHR

16h 42m1 stop

$502Iberia

Fri, Jan 23 - Fri, Jan 30

7:05 pm - 4:22 pm

LHR

ONT

28h 17m2 stops

10:56 am - 8:15 am

ONT

LHR

14h 19m1 stop

$511British Airways

Mon, Mar 9 - Tue, Mar 24

10:05 am - 5:22 pm

LHR

ONT

15h 17m1 stop

4:45 pm - 1:15 pm

ONT

LHR

12h 30m1 stop

$512British Airways

Fri, Jan 23 - Wed, Jan 28

10:00 am - 9:05 pm

LCY

ONT

19h 05m2 stops

12:41 pm - 4:35 pm

ONT

LCY

19h 54m2 stops

$557Delta

Mon, Jan 26 - Mon, Feb 2

7:45 am - 9:05 pm

LCY

ONT

21h 20m2 stops

1:15 pm - 4:35 pm

ONT

LCY

19h 20m2 stops

$558Delta

Mon, Feb 9 - Mon, Feb 16

11:30 am - 11:40 pm

LGW

ONT

20h 10m2 stops

3:05 pm - 8:00 pm

ONT

LGW

20h 55m2 stops

$676Iberia

Thu, Apr 23 - Sat, May 2

British Airways flights from United Kingdom to Ontario

Our best British Airways deals on United Kingdom to Ontario flight tickets

British Airways

Mar 9

LHR7:05 pmLondon Heathrow

28h 17m

2 stops

ONT4:22 pmOntario

Mar 24

ONT10:56 amOntario

14h 19m

1 stop

LHR8:15 amLondon Heathrow

$511

Find similar

British Airways

Jan 23

LHR10:05 amLondon Heathrow

15h 17m

1 stop

ONT5:22 pmOntario

Jan 28

ONT4:45 pmOntario

12h 30m

1 stop

LHR1:15 pmLondon Heathrow

$512

Find similar

British Airways

Jan 23

LHR10:05 amLondon Heathrow

15h 17m

1 stop

ONT5:22 pmOntario

Feb 13

ONT2:44 pmOntario

12h 56m

1 stop

LHR11:40 amLondon Heathrow

$514

Find similar

Delta flights from United Kingdom to Ontario

Our best Delta deals on United Kingdom to Ontario flight tickets

Delta

Mar 9

LHR2:30 pmLondon Heathrow

15h 03m

1 stop

ONT10:33 pmOntario

Mar 24

ONT11:59 amOntario

15h 31m

1 stop

LHR10:30 amLondon Heathrow

$515

Find similar

Delta

Mar 31

LHR5:25 pmLondon Heathrow

25h 53m

1 stop

ONT11:18 amOntario

Apr 9

ONT11:59 amOntario

18h 16m

1 stop

LHR2:15 pmLondon Heathrow

$551

Find similar

Delta

Jan 8

LHR10:45 amLondon Heathrow

13h 27m

1 stop

ONT4:12 pmOntario

Jan 28

ONT1:11 pmOntario

12h 49m

1 stop

LHR10:00 amLondon Heathrow

$555

Find similar

momondo Fare Finder

Use the filters below to find and compare flights from the United Kingdom to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Mon 1/26

2:30 pm-10:51 pm

1 stop16h 21m

Ontario

Mon 2/2

6:00 am-10:00 am

1 stop20h 00m

$484

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Mon 2/9

12:20 pm-10:44 pm

1 stop18h 24m

Ontario

Mon 2/16

1:10 pm-10:00 am

1 stop12h 50m

$485

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Tue 2/10

9:30 am-10:53 pm

2 stops21h 23m

Ontario

Tue 2/17

6:10 am-9:20 pm

2 stops31h 10m

$492

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Thu 1/22

7:30 am-9:58 pm

2 stops22h 28m

Ontario

Mon 1/26

5:05 am-6:20 am

2 stops17h 15m

$497

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Fri 1/23

10:05 am-10:48 pm

1 stop20h 43m

Ontario

Fri 1/30

10:58 am-11:40 am

1 stop16h 42m

$502

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Mon 3/9

7:05 pm-4:22 pm

2 stops28h 17m

Ontario

Tue 3/24

10:56 am-8:15 am

1 stop14h 19m

$511

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Fri 1/23

10:05 am-5:22 pm

1 stop15h 17m

Ontario

Wed 1/28

4:45 pm-1:15 pm

1 stop12h 30m

$512

LondonOntario

LCY - ONT

LCYONT

London City

Mon 1/26

10:00 am-9:05 pm

2 stops19h 05m

Ontario

Mon 2/2

12:41 pm-4:35 pm

2 stops19h 54m

$557

LondonOntario

LCY - ONT

LCYONT

London City

Mon 2/9

7:45 am-9:05 pm

2 stops21h 20m

Ontario

Mon 2/16

1:15 pm-4:35 pm

2 stops19h 20m

$558

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Thu 4/23

11:30 am-11:40 pm

2 stops20h 10m

Ontario

Sat 5/2

3:05 pm-8:00 pm

2 stops20h 55m

$676

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 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?

In general, January is the cheapest month to fly from United Kingdom to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $551. If you aren’t able to travel during the month of January, then book flights to Ontario from United Kingdom during September instead. Flights to Ontario in September, while not as cheap as those in January, still average around $551.

What is the cheapest day to depart on your flight to Ontario?

The cheapest day to depart on your flight to Ontario is on a Tuesday when prices can be found for as low as $602. This is often the case because there is less demand to fly during this day of the week. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from United Kingdom to Ontario for around $991.

What is the cheapest time of day to depart on your flight to Ontario?

In the afternoon is the cheapest time of day to fly from United Kingdom to Ontario when you can find flight prices for as low as $602. Flying to Ontario in the afternoon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $814 on average. Flights to Ontario from United Kingdom at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

You are more likely to see cheaper flights to Ontario from United Kingdom when booking weeks ahead of your departure date. In general, you can expect to find flights to Ontario for around $720 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ontario from United Kingdom for as low as $527 on momondo.

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

You could potentially save up to 29% 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 27m
Direct flights	None

The fastest flight from United Kingdom to Ontario takes 13h 27m

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

Search flight deals

When did momondo last update prices for flights from United Kingdom to Ontario Airport?
Prices for flights from United Kingdom to Ontario Airport refresh daily.
How many operators does momondo search for flights from United Kingdom to Ontario Airport?
As of December 2025, there is 1 operator available to choose from for flights from United Kingdom to Ontario Airport.
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 $560	Free Cancellation	Rating 7.4 9,113 reviews		Search United Airlines 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?

momondo does allow users to show only those flights to Ontario from United Kingdom which offer a flexible booking policy as well as other useful filters and features.

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?

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