Which airlines fly to Ontario?

British Airways, Virgin Atlantic and Scandinavian Airlines 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 47% of people opting to fly with this airline when travelling to Ontario. Keep in mind that there are 26 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?

On average, it takes 11h 12m 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 Manchester and into Los Angeles, then the flight time is around 13h 55m.

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 6 operators available for flights from United Kingdom to Ontario Airport as of December 2025.

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.

£291 Cheap Flights from the United Kingdom to Ontario in 2025/26

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Voted winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from the United Kingdom to Los Angeles

Round-trip

One-way

Last minute

Recent return flight deals from the United Kingdom to Los Angeles

Enter your travel dates to find the best prices.

13:05 - 20:58

LHR

ONT

15h 53m1 stop

11:53 - 14:15

ONT

LHR

18h 22m1 stop

£291Delta

Tue, 14 Apr - Thu, 23 Apr

13:05 - 20:58

LHR

ONT

15h 53m1 stop

13:20 - 09:50

ONT

LHR

12h 30m1 stop

£292Delta

Tue, 14 Apr - Tue, 21 Apr

10:00 - 21:50

LHR

ONT

19h 50m1 stop

11:05 - 11:10

ONT

LHR

16h 05m1 stop

£313United Airlines

Fri, 10 Apr - Sun, 19 Apr

05:55 - 22:48

ABZ

ONT

24h 53m2 stops

15:09 - 18:40

ONT

ABZ

19h 31m2 stops

£467British Airways

Thu, 29 Jan - Mon, 2 Feb

06:10 - 22:48

MAN

ONT

24h 38m2 stops

15:09 - 16:20

ONT

MAN

17h 11m2 stops

£467British Airways

Wed, 21 Jan - Wed, 28 Jan

13:00 - 22:53

MAN

ONT

17h 53m2 stops

05:05 - 12:20

ONT

MAN

23h 15m2 stops

£476United Airlines

Fri, 23 Jan - Tue, 27 Jan

06:10 - 21:48

LBA

ONT

23h 38m2 stops

12:41 - 09:30

ONT

LBA

36h 49m2 stops

£518Virgin Atlantic

Sat, 24 Jan - Thu, 29 Jan

06:10 - 21:48

LBA

ONT

23h 38m2 stops

12:41 - 09:30

ONT

LBA

36h 49m2 stops

£520Virgin Atlantic

Sat, 24 Jan - Thu, 29 Jan

06:05 - 16:15

LBA

ONT

18h 10m2 stops

17:09 - 16:50

ONT

LBA

15h 41m2 stops

£654KLM

Mon, 2 Feb - Wed, 1 Apr

20:05 - 21:05

LCY

ONT

33h 00m2 stops

22:30 - 07:15

ONT

LCY

48h 45m2 stops

£795KLM

Fri, 23 Jan - Fri, 30 Jan

British Airways flights from United Kingdom to Ontario

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

British Airways

23 Jan

LHR10:05London Heathrow

15h 17m

1 stop

ONT17:22Ontario

28 Jan

ONT16:45Ontario

12h 30m

1 stop

LHR13:15London Heathrow

£378

Find similar

British Airways

9 Mar

LHR19:05London Heathrow

28h 17m

2 stops

ONT16:22Ontario

24 Mar

ONT10:56Ontario

14h 19m

1 stop

LHR08:15London Heathrow

£378

Find similar

British Airways

23 Jan

LHR10:05London Heathrow

15h 17m

1 stop

ONT17:22Ontario

13 Feb

ONT14:44Ontario

12h 56m

1 stop

LHR11:40London Heathrow

£381

Find similar

United Airlines flights from United Kingdom to Ontario

Our best United Airlines deals on United Kingdom to Ontario flight tickets

United Airlines

10 Apr

LHR10:00London Heathrow

19h 50m

1 stop

ONT21:50Ontario

19 Apr

ONT11:05Ontario

16h 05m

1 stop

LHR11:10London Heathrow

£313

Find similar

United Airlines

11 Mar

LHR06:30London Heathrow

18h 11m

2 stops

ONT17:41Ontario

24 Mar

ONT13:50Ontario

12h 50m

1 stop

LHR09:40London Heathrow

£364

Find similar

United Airlines

22 Jan

LHR07:30London Heathrow

22h 28m

2 stops

ONT21:58Ontario

26 Jan

ONT05:05Ontario

17h 15m

2 stops

LHR06:20London Heathrow

£368

Find similar

Fly from

Fly to

Route

Depart

Return

Price

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Tue 14/4

13:05-20:58

1 stop15h 53m

Ontario

Thu 23/4

11:53-14:15

1 stop18h 22m

£291

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Tue 14/4

13:05-20:58

1 stop15h 53m

Ontario

Tue 21/4

13:20-09:50

1 stop12h 30m

£292

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Fri 10/4

10:00-21:50

1 stop19h 50m

Ontario

Sun 19/4

11:05-11:10

1 stop16h 05m

£313

AberdeenOntario

ABZ - ONT

ABZONT

Aberdeen Dyce

Thu 29/1

05:55-22:48

2 stops24h 53m

Ontario

Mon 2/2

15:09-18:40

2 stops19h 31m

£467

ManchesterOntario

MAN - ONT

MANONT

Manchester

Wed 21/1

06:10-22:48

2 stops24h 38m

Ontario

Wed 28/1

15:09-16:20

2 stops17h 11m

£467

ManchesterOntario

MAN - ONT

MANONT

Manchester

Fri 23/1

13:00-22:53

2 stops17h 53m

Ontario

Tue 27/1

05:05-12:20

2 stops23h 15m

£476

LeedsOntario

LBA - ONT

LBAONT

Leeds/Bradford

Sat 24/1

06:10-21:48

2 stops23h 38m

Ontario

Thu 29/1

12:41-09:30

2 stops36h 49m

£518

LeedsOntario

LBA - ONT

LBAONT

Leeds/Bradford

Sat 24/1

06:10-21:48

2 stops23h 38m

Ontario

Thu 29/1

12:41-09:30

2 stops36h 49m

£520

LeedsOntario

LBA - ONT

LBAONT

Leeds/Bradford

Mon 2/2

06:05-16:15

2 stops18h 10m

Ontario

Wed 1/4

17:09-16:50

2 stops15h 41m

£654

LondonOntario

LCY - ONT

LCYONT

London City

Fri 23/1

20:05-21:05

2 stops33h 00m

Ontario

Fri 30/1

22:30-07:15

2 stops48h 45m

£795

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 January is, on average, the cheapest month to fly to Ontario from United Kingdom, with most prices found around £408. If you’re not able to fly to Ontario in January, then September is your next best option. Flight prices from United Kingdom to Ontario during September average around £408.

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 Wednesday when prices can be found for as low as £487. This is often the case because there is less demand to fly during this day of the week. Flights from United Kingdom to Ontario on a Sunday will generally be more expensive and average around £563. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

Flying to Ontario from United Kingdom in the evening is the least expensive time of day to depart. momondo users have found prices as low as £476 when looking at flights departing in the evening. In contrast, the most expensive time of day to depart to Ontario is at midday when prices are around £560.

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 £533 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 United Kingdom for as low as £390 on momondo.

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

You could potentially save up to 30% 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 19m
Direct flights	None

The fastest flight from United Kingdom to Ontario takes 13h 19m

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 are refreshed on a daily basis.
How many operators does momondo search for flights from United Kingdom to Ontario Airport?
There are 6 operators available for flights from United Kingdom to Ontario Airport as of December 2025.
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
Finnair	PriceFrom £278	Free Cancellation	Rating 7.6 1,339 reviews	Search Finnair flights
British Airways	PriceFrom £370	Free Cancellation	Rating 6.7 7,618 reviews	Search British Airways flights
Virgin Atlantic	PriceFrom £373	Free Cancellation	Rating 7.5 677 reviews	Search Virgin Atlantic flights
United Airlines	PriceFrom £384	Free Cancellation	Rating 7.4 9,116 reviews	Search United Airlines flights
KLM	PriceFrom £392	Free Cancellation	Rating 7.7 1,434 reviews	Search KLM flights
Lufthansa	PriceFrom £429	Free Cancellation	Rating 6.8 7,656 reviews	Search Lufthansa 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.