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Cheap flights from Ontario to Belfast from £263

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Belfast departing on 21/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags
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Find the cheapest flights from Ontario to Belfast

Cheap return flights

Enter your travel dates to find the best prices.
American Airlines Logo
14:31 - 18:55
ONT
-
BHD
20h 24m
2 stops
American Airlines Logo
09:40 - 22:14
BHD
-
ONT
20h 34m
2 stops
£613American Airlines
Tue, 18 Aug - Tue, 1 Sep
British Airways Logo
13:00 - 20:35
ONT
-
BHD
23h 35m
2 stops
British Airways Logo
09:40 - 22:14
BHD
-
ONT
20h 34m
2 stops
£661British Airways
Mon, 17 Aug - Tue, 1 Sep
American Airlines Logo
22:29 - 10:30
ONT
-
BHD
28h 01m
2 stops
American Airlines Logo
06:30 - 18:17
BHD
-
ONT
19h 47m
2 stops
£762American Airlines
Sat, 15 Aug - Fri, 4 Sep
American Airlines Logo
16:54 - 18:45
ONT
-
BHD
17h 51m
2 stops
American Airlines Logo
15:20 - 18:17
BHD
-
ONT
34h 57m
2 stops
£799American Airlines
Thu, 20 Aug - Mon, 31 Aug
British Airways Logo
16:52 - 18:10
ONT
-
BHD
17h 18m
2 stops
British Airways Logo
19:30 - 22:36
BHD
-
ONT
35h 06m
2 stops
£832British Airways
Fri, 24 Apr - Tue, 28 Apr
British Airways Logo
07:00 - 18:50
ONT
-
BHD
28h 50m
2 stops
British Airways Logo
19:05 - 22:07
BHD
-
ONT
35h 02m
2 stops
£1,001British Airways
Thu, 26 Mar - Sat, 4 Apr
British Airways Logo
12:47 - 14:35
ONT
-
BHD
17h 48m
2 stops
British Airways Logo
09:35 - 22:14
BHD
-
ONT
20h 39m
2 stops
£1,080British Airways
Sun, 16 Aug - Fri, 21 Aug
British Airways Logo
10:25 - 15:05
ONT
-
BHD
20h 40m
2 stops
British Airways Logo
07:05 - 19:59
BHD
-
ONT
20h 54m
2 stops
£1,461British Airways
Sat, 18 Jul - Sat, 25 Jul
British Airways Logo
12:39 - 14:35
ONT
-
BHD
17h 56m
2 stops
British Airways Logo
13:10 - 21:44
BHD
-
ONT
16h 34m
2 stops
£1,592British Airways
Sun, 19 Jul - Sun, 26 Jul
British Airways Logo
12:40 - 14:35
ONT
-
BHD
17h 55m
2 stops
British Airways Logo
13:10 - 21:44
BHD
-
ONT
16h 34m
2 stops
£2,359British Airways
Sun, 21 Jun - Sun, 5 Jul

American Airlines flights from Ontario to Belfast

Our best American Airlines deals on Ontario to Belfast flight tickets
American Airlines
18 Aug
ONT14:31Ontario
20h 24m
2 stops
BHD18:55Belfast City
1 Sept
BHD09:40Belfast City
20h 34m
2 stops
ONT22:14Ontario
£613
American Airlines
15 Aug
ONT22:29Ontario
28h 01m
2 stops
BHD10:30Belfast City
4 Sept
BHD06:30Belfast City
19h 47m
2 stops
ONT18:17Ontario
£762
American Airlines
20 Aug
ONT16:54Ontario
17h 51m
2 stops
BHD18:45Belfast City
31 Aug
BHD15:20Belfast City
34h 57m
2 stops
ONT18:17Ontario
£799

British Airways flights from Ontario to Belfast

Our best British Airways deals on Ontario to Belfast flight tickets
British Airways
17 Aug
ONT13:00Ontario
23h 35m
2 stops
BHD20:35Belfast City
1 Sept
BHD09:40Belfast City
20h 34m
2 stops
ONT22:14Ontario
£661
British Airways
24 Apr
ONT16:52Ontario
17h 18m
2 stops
BHD18:10Belfast City
28 Apr
BHD19:30Belfast City
35h 06m
2 stops
ONT22:36Ontario
£832
British Airways
26 Mar
ONT07:00Ontario
28h 50m
2 stops
BHD18:50Belfast City
4 Apr
BHD19:05Belfast City
35h 02m
2 stops
ONT22:07Ontario
£1,001

momondo Fare Finder

 
Customise your flight search to find flights from Ontario to Belfast that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 11 March 2026.
Use the filters below to find and compare flights from Ontario to Belfast that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Tue 18/8

14:31-18:55

2 stops20h 24m

Belfast City

Tue 1/9

09:40-22:14

2 stops20h 34m

£613

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Mon 17/8

13:00-20:35

2 stops23h 35m

Belfast City

Tue 1/9

09:40-22:14

2 stops20h 34m

£661

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Sat 15/8

22:29-10:30

2 stops28h 01m

Belfast City

Fri 4/9

06:30-18:17

2 stops19h 47m

£762

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Thu 20/8

16:54-18:45

2 stops17h 51m

Belfast City

Mon 31/8

15:20-18:17

2 stops34h 57m

£799

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Fri 24/4

16:52-18:10

2 stops17h 18m

Belfast City

Tue 28/4

19:30-22:36

2 stops35h 06m

£832

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Thu 26/3

07:00-18:50

2 stops28h 50m

Belfast City

Sat 4/4

19:05-22:07

2 stops35h 02m

£1,001

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Sun 16/8

12:47-14:35

2 stops17h 48m

Belfast City

Fri 21/8

09:35-22:14

2 stops20h 39m

£1,080

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Sat 18/7

10:25-15:05

2 stops20h 40m

Belfast City

Sat 25/7

07:05-19:59

2 stops20h 54m

£1,461

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Sun 19/7

12:39-14:35

2 stops17h 56m

Belfast City

Sun 26/7

13:10-21:44

2 stops16h 34m

£1,592
Fastest return journey

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Sun 21/6

12:40-14:35

2 stops17h 55m

Belfast City

Sun 5/7

13:10-21:44

2 stops16h 34m

£2,359

Flights are sorted by cheapest return flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
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See travel insights to Belfast from

How to get the cheapest flight ticket from Ontario to Belfast

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

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

British Airways and American Airlines are the most popular carriers operating from Ontario to Belfast

Cheap Ontario to Belfast flight deals and tips

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

Fastest flight time

17h 48m

Direct flights

None
The fastest flight from Ontario to Belfast takes 17h 48m
There are no direct flights from Ontario to Belfast. There are no popular flight routes from Ontario to Belfast.
Search flight deals

  • How far is Ontario to Belfast by plane?

    The straight-line distance from Ontario to Belfast is 5095.8 mi. Flights usually cover this in 17h 48m, depending on flying conditions and air traffic around both airports.

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

    Prices for flights from Ontario Airport to Belfast refresh daily.

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ontario Airport to Belfast.

  • What documentation or ID do you need to fly to Belfast?

    The necessary travel and health documents for your Belfast 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.

Why use momondo?

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

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 Belfast from Ontario.

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

Yes. momondo enables you to select and highlight flights to Belfast from Ontario with this policy.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Ontario to Belfast.

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

If you are simply researching potential flights to Belfast, momondo offers a useful price alert feature which will track prices for flights to Belfast from Ontario and alert you when they change.

An easier way to manage your Belfast trip

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Find better results for your trip to the United Kingdom

Fly into one of these airports located in Belfast

Airports listed have a maximum distance of 12.2 mi from Belfast
Belfast Intl Airport
Belfast City Airport