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$625+ Cheap flights from Ontario (ONT) to Belfast

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BHD
Jul 28 — Aug 41
Tue 7/28
Tue 8/4
1 adult, Economy
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Cheap flight deals from Ontario to Belfast

Cheapest flights from Ontario to Belfast
Explore the most affordable flight options available from Ontario to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 28, 2026.

This Expedia deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/251:05 pm
ONT
-
BHD
2 stops23h 30m
British Airways
Mon 10/56:30 pm
BHD
-
ONT
2 stops34h 38m
British Airways
Deal found 6/27$900
This Priceline deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/291:05 pm
ONT
-
BHD
2 stops35h 45m
British Airways
Fri 10/912:00 pm
BHD
-
ONT
2 stops29h 29m
British Airways
Deal found 6/27$932
This British Airways deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/812:46 pm
ONT
-
BHD
2 stops20h 04m
British Airways
Thu 11/1211:05 am
BHD
-
ONT
2 stops20h 52m
British Airways
Deal found 6/25$1,116
This Priceline deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/612:33 pm
ONT
-
BHD
2 stops18h 02m
British Airways
Wed 9/1610:05 am
BHD
-
ONT
2 stops18h 04m
British Airways
Deal found 6/23$1,147
This British Airways deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2812:55 pm
ONT
-
BHD
2 stops21h 40m
British Airways
Tue 1/57:25 pm
BHD
-
ONT
2 stops34h 36m
British Airways
Deal found 6/26$1,150
This Ovago deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2310:25 am
ONT
-
BHD
3 stops64h 55m
British Airways
Sun 11/19:10 am
BHD
-
ONT
2 stops22h 47m
British Airways
Deal found 6/27$1,159
This BusinessClass deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/232:22 pm
ONT
-
BHD
3 stops22h 28m
Multiple Airlines
Sun 11/16:20 pm
BHD
-
ONT
3 stops36h 03m
Multiple Airlines
Deal found 6/27$1,270
This Gurufare deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/298:25 am
ONT
-
BHD
2 stops18h 20m
Multiple Airlines
Fri 10/97:00 am
BHD
-
ONT
3 stops22h 35m
Multiple Airlines
Deal found 6/27$1,280
This FlightHub deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/2210:25 am
ONT
-
BHD
2 stops25h 25m
British Airways
Wed 7/298:35 pm
BHD
-
ONT
2 stops33h 59m
British Airways
Deal found 6/25$1,348

Find flight deals from Ontario to Belfast

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Belfast (BF1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 28, 2026.

Round-trip from

$900
(Expedia)

One-way from

$625
(Orbitz)
From Ontario to Belfast
Search Deals
One-way flight from Ontario to Belfast
Search Deals

Cheapflights Fare Finder

 
Customize 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, Cheapflights users made 2,558,603 searches. Data last updated June 28, 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 round-trip

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Tue 9/29

1:05 pm-8:50 am

2 stops35h 45m

Belfast City

Fri 10/9

12:00 pm-9:29 am

2 stops29h 29m

$932

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Sun 11/8

9:59 am-6:40 pm

2 stops24h 41m

Belfast City

Thu 11/12

9:05 am-11:57 pm

2 stops22h 52m

$1,116

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Fri 10/23

2:22 pm-8:50 pm

3 stops22h 28m

Belfast City

Sun 11/1

6:20 pm-10:23 pm

3 stops36h 03m

$1,270

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Tue 9/29

8:25 am-10:45 am

2 stops18h 20m

Belfast City

Fri 10/9

7:00 am-9:35 pm

3 stops22h 35m

$1,280

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Wed 7/22

10:25 am-7:50 pm

2 stops25h 25m

Belfast City

Wed 7/29

8:35 pm-10:34 pm

2 stops33h 59m

$1,348
Quickest round-trip

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Fri 8/28

5:05 pm-4:55 pm

2 stops15h 50m

Belfast City

Tue 9/8

9:50 am-8:07 pm

2 stops18h 17m

$2,328

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Tue 8/4

7:05 am-9:20 am

2 stops18h 15m

Belfast City

Tue 8/18

9:50 am-7:53 pm

2 stops18h 03m

$2,701
Cheapest one-way
Quickest one-way

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Tue 9/15

12:37 pm-3:20 pm

2 stops18h 43m

$625

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Tue 8/25

12:33 pm-3:20 pm

2 stops18h 47m

$1,103

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Sat 9/26

3:14 pm-9:45 am

3 stops58h 31m

$3,445

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/23

Showing 1-10 of 11 resultsSorted by cheapest first
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Best time to book a flight from Ontario to Belfast

Have a flexible travel schedule? Discover the best time to fly to Belfast from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Belfast
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Belfast. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ontario to Belfast?

    Ontario (ONT) is the airport you will fly out of if you book a flight from Ontario to Belfast. You should not have trouble finding flights to Belfast from Ontario; the airport handles an average of 0 outbound flights to Belfast per day. You should also have plenty of airline options to choose from since 0 airlines have flights from the Ontario airport to Belfast. It is only a 3.1 mi journey to Ontario (ONT) from Ontario’s city center.

  • How long is the flight from Ontario to Belfast?

    There are many flights that can get you from Ontario to Belfast in 35h 45m. Fly via British Airways to get the fastest option. The distance from Ontario to Belfast is about 5095 mi.

  • Can I find deals for flights from Ontario to Belfast that include hotel bookings?

    Yes. In addition to deals on Ontario to Belfast flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Belfast?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Belfast.

  • Can I find deals for business class flights from Ontario to Belfast?

    Yes. Cheapflights offers flight deals from Ontario to Belfast by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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