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

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

What airlines fly to United Kingdom?

British Airways, American Airlines and United Airlines are the top three most popular airlines that fly to United Kingdom from Ontario according to our data. British Airways is the first choice among our users, with 52% of people opting to fly with this airline when traveling to United Kingdom. Keep in mind that there are 20 different airlines that fly to United Kingdom on a routine basis, so you have a few additional options to choose from.

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

Prices for flights from Ontario Airport to United Kingdom were last updated today.

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

As of March 2026, there are 5 operators available to choose from for flights from Ontario Airport to United Kingdom.

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

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 Ontario Airport to United Kingdom.

What documentation or ID do you need to fly to United Kingdom?

The travel and health documents required for your trip to United Kingdom can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at United Kingdom. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$245 Cheap Flights from Ontario to the United Kingdom in 2026

1 adult

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Find the cheapest flights from Ontario to the United Kingdom

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:00 am - 8:25 am

ONT

EDI

17h 25m

1 stop

9:00 am - 6:19 pm

EDI

ONT

41h 19m

2 stops

$715United Airlines

Sun, Aug 23 - Wed, Aug 26

5:00 am - 7:40 am

ONT

EDI

18h 40m

2 stops

9:00 am - 6:19 pm

EDI

ONT

41h 19m

2 stops

$719United Airlines

Sun, Aug 23 - Wed, Aug 26

12:19 pm - 9:45 pm

ONT

MAN

25h 26m

2 stops

7:50 pm - 4:22 pm

MAN

ONT

28h 32m

2 stops

$727British Airways

Wed, Apr 8 - Wed, Apr 29

7:00 am - 8:25 am

ONT

EDI

17h 25m

1 stop

11:30 am - 6:19 pm

EDI

ONT

14h 49m

1 stop

$730United Airlines

Sun, Aug 23 - Wed, Aug 26

10:59 am - 8:05 am

ONT

LHR

13h 06m

1 stop

10:05 am - 4:22 pm

LHR

ONT

14h 17m

1 stop

$733British Airways

Mon, Apr 27 - Wed, May 6

6:00 am - 8:40 am

ONT

LGW

18h 40m

2 stops

2:30 pm - 10:09 am

LGW

ONT

27h 39m

2 stops

$739American Airlines

Wed, May 6 - Wed, May 13

11:53 am - 12:10 pm

ONT

LHR

16h 17m

1 stop

11:45 am - 10:37 pm

LHR

ONT

18h 52m

2 stops

$744Delta

Wed, Apr 15 - Tue, May 5

6:00 am - 7:10 am

ONT

LHR

17h 10m

2 stops

9:55 am - 10:37 pm

LHR

ONT

20h 42m

2 stops

$748Delta

Wed, Apr 15 - Tue, May 5

12:19 pm - 4:30 pm

ONT

EDI

20h 11m

2 stops

10:30 am - 8:27 pm

EDI

ONT

17h 57m

2 stops

$751American Airlines

Tue, Apr 21 - Tue, Apr 28

6:00 am - 12:40 pm

ONT

BHX

22h 40m

2 stops

1:25 pm - 11:44 pm

BHX

ONT

18h 19m

2 stops

$925KLM

Mon, Apr 6 - Fri, Apr 17

Alaska Airlines flights from Ontario to United Kingdom

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

Alaska Airlines

Aug 16

ONT5:38 pmOntario

13h 27m

1 stop

LHR3:05 pmLondon Heathrow

Aug 25

LHR5:00 pmLondon Heathrow

33h 13m

1 stop

ONT6:13 pmOntario

$778

Alaska Airlines

Aug 17

ONT2:09 pmOntario

16h 56m

1 stop

LHR3:05 pmLondon Heathrow

Aug 27

LHR5:00 pmLondon Heathrow

26h 09m

1 stop

ONT11:09 amOntario

$779

British Airways flights from Ontario to United Kingdom

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

British Airways

Apr 8

ONT12:19 pmOntario

25h 26m

2 stops

MAN9:45 pmManchester

Apr 29

MAN7:50 pmManchester

28h 32m

2 stops

ONT4:22 pmOntario

$727

British Airways

Apr 27

ONT10:59 amOntario

13h 06m

1 stop

LHR8:05 amLondon Heathrow

May 6

LHR10:05 amLondon Heathrow

14h 17m

1 stop

ONT4:22 pmOntario

$733

British Airways

Apr 1

ONT10:56 amOntario

12h 59m

1 stop

LHR7:55 amLondon Heathrow

May 13

LHR10:05 amLondon Heathrow

14h 17m

1 stop

ONT4:22 pmOntario

$761

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioEdinburgh

ONT - EDI

ONTEDI

Ontario

Sun 8/23

7:00 am-8:25 am

1 stop17h 25m

Edinburgh Turnhouse

Wed 8/26

9:00 am-6:19 pm

2 stops41h 19m

$715

OntarioEdinburgh

ONT - EDI

ONTEDI

Ontario

Sun 8/23

5:00 am-7:40 am

2 stops18h 40m

Edinburgh Turnhouse

Wed 8/26

9:00 am-6:19 pm

2 stops41h 19m

$719

OntarioManchester

ONT - MAN

ONTMAN

Ontario

Wed 4/8

12:19 pm-9:45 pm

2 stops25h 26m

Manchester

Wed 4/29

7:50 pm-4:22 pm

2 stops28h 32m

$727

OntarioEdinburgh

ONT - EDI

ONTEDI

Ontario

Sun 8/23

7:00 am-8:25 am

1 stop17h 25m

Edinburgh Turnhouse

Wed 8/26

11:30 am-6:19 pm

1 stop14h 49m

$730

Quickest round-trip

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Mon 4/27

10:59 am-8:05 am

1 stop13h 06m

London Heathrow

Wed 5/6

10:05 am-4:22 pm

1 stop14h 17m

$733

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Wed 5/6

6:00 am-8:40 am

2 stops18h 40m

London Gatwick

Wed 5/13

2:30 pm-10:09 am

2 stops27h 39m

$739

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Wed 4/15

11:53 am-12:10 pm

1 stop16h 17m

London Heathrow

Tue 5/5

11:45 am-10:37 pm

2 stops18h 52m

$744

OntarioLondon

ONT - LHR

ONTLHR

Ontario

Wed 4/15

6:00 am-7:10 am

2 stops17h 10m

London Heathrow

Tue 5/5

9:55 am-10:37 pm

2 stops20h 42m

$748

OntarioEdinburgh

ONT - EDI

ONTEDI

Ontario

Tue 4/21

12:19 pm-4:30 pm

2 stops20h 11m

Edinburgh Turnhouse

Tue 4/28

10:30 am-8:27 pm

2 stops17h 57m

$751

OntarioBirmingham

ONT - BHX

ONTBHX

Ontario

Mon 4/6

6:00 am-12:40 pm

2 stops22h 40m

Birmingham

Fri 4/17

1:25 pm-11:44 pm

2 stops18h 19m

$925

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 Ontario to United Kingdom

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 cheapest month to fly to United Kingdom?

In general, March is the cheapest month to fly from Ontario to United Kingdom. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $652. If you aren’t able to travel to United Kingdom during the month of March, then flying in April is also cheap. Prices for this month can be found on momondo for an average of $653.

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

You could potentially save up to 51% on your flight if you consider stops on a Ontario to United Kingdom flight.

Cheap Ontario to United Kingdom flight deals and tips

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

Fastest flight time	12h 22m
Direct flights	None

The fastest flight from Ontario to United Kingdom takes 12h 22m

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

Search flight deals

When did momondo last update prices for flights from Ontario Airport to United Kingdom?
Prices for flights from Ontario Airport to United Kingdom were last updated today.
How many operators does momondo search for flights from Ontario Airport to United Kingdom?
As of March 2026, there are 5 operators available to choose from for flights from Ontario Airport to United Kingdom.
How old do you have to be to fly from Ontario Airport to United Kingdom?
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 Ontario Airport to United Kingdom.
What documentation or ID do you need to fly to United Kingdom?
The travel and health documents required for your trip to United Kingdom can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at United Kingdom. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Ontario to United Kingdom

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

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $570	Free Cancellation	Rating 7.9 8,286 reviews	Search Delta flights
KLM	PriceFrom $580	Free Cancellation	Rating 7.8 1,470 reviews	Search KLM flights
American Airlines	PriceFrom $617	Free Cancellation	Rating 7.1 11,432 reviews	Search American Airlines flights
British Airways	PriceFrom $624	Free Cancellation	Rating 6.7 7,784 reviews	Search British Airways flights
United Airlines	PriceFrom $662	Free Cancellation	Rating 7.4 9,418 reviews	Search United Airlines flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Ontario to United Kingdom for you.

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

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

How can momondo help me find flights from Ontario to United Kingdom?

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

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

If you are not ready to book a flight from Ontario to United Kingdom now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to United Kingdom and let you know when they change.