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Belfast

$330+ 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 8/11. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BHD
Jun 10 — Jun 171
Wed 6/10
Wed 6/17
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 May 11, 2026.

This British Airways deal was found by Cheapflights users on 5/7. 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 11/94:47 pm
ONT
-
BHD
2 stops15h 18m
British Airways
Wed 11/115:40 pm
BHD
-
ONT
2 stops36h 43m
British Airways
Deal found 5/7$1,102
This Delta deal was found by Cheapflights users on 5/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/286:00 am
ONT
-
BHD
2 stops26h 50m
Delta
Tue 1/55:20 pm
BHD
-
ONT
2 stops30h 52m
Delta
Deal found 5/7$1,152
This British Airways deal was found by Cheapflights users on 5/6. 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 1/58:45 am
BHD
-
ONT
2 stops23h 01m
British Airways
Deal found 5/6$1,156
This Trip.com deal was found by Cheapflights users on 5/8. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/107:05 am
ONT
-
BHD
2 stops18h 15m
KLM
Mon 5/255:30 pm
BHD
-
ONT
2 stops36h 18m
KLM
Deal found 5/8$1,197
This BusinessClass deal was found by Cheapflights users on 5/9. 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.
Mon 12/287:10 am
ONT
-
BHD
2 stops19h 30m
Multiple Airlines
Tue 1/57:00 am
BHD
-
ONT
3 stops24h 46m
Multiple Airlines
Deal found 5/9$1,479
This Priceline deal was found by Cheapflights users on 5/7. 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.
Sat 12/264:45 pm
ONT
-
BHD
2 stops16h 00m
British Airways
Sat 1/211:35 am
BHD
-
ONT
2 stops18h 39m
British Airways
Deal found 5/7$1,787
This FlightHub deal was found by Cheapflights users on 5/8. 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.
Thu 6/1112:41 pm
ONT
-
BHD
2 stops18h 49m
British Airways
Sun 6/218:10 pm
BHD
-
ONT
2 stops34h 29m
British Airways
Deal found 5/8$1,789
This KLM deal was found by Cheapflights users on 5/6. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/15:21 pm
ONT
-
BHD
2 stops15h 34m
KLM
Wed 7/159:50 am
BHD
-
ONT
2 stops20h 00m
KLM
Deal found 5/6$4,187

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 May 11, 2026.

Round-trip from

$1,789
(FlightHub)

One-way from

$330
(Iberia)

Popular in

June

Cheapest in

October

Average price

$1,124
From Ontario to Belfast
Search Deals
One-way flight from Ontario to Belfast
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($228 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($44 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
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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 May 11, 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

Thu 6/11

12:41 pm-3:30 pm

2 stops18h 49m

Belfast City

Sun 6/21

8:10 pm-10:39 pm

2 stops34h 29m

$1,789
Quickest round-trip

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Wed 7/1

5:21 pm-4:55 pm

2 stops15h 34m

Belfast City

Wed 7/15

9:50 am-9:50 pm

2 stops20h 00m

$4,187

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Fri 5/22

4:57 pm-4:55 pm

2 stops15h 58m

Belfast City

Sun 5/24

9:50 am-9:48 pm

2 stops19h 58m

$4,771

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Fri 5/22

4:57 pm-4:55 pm

2 stops15h 58m

Belfast City

Tue 5/26

9:50 am-9:48 pm

2 stops19h 58m

$11,432

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Fri 5/22

12:40 pm-3:30 pm

2 stops18h 50m

Belfast City

Tue 5/26

9:40 am-7:56 pm

2 stops18h 16m

$11,955

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Thu 6/18

7:05 am-9:20 am

2 stops18h 15m

Belfast City

Sun 7/5

9:50 am-9:48 pm

2 stops19h 58m

$15,995
Cheapest one-way
Quickest one-way

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Sun 9/6

5:05 pm-4:55 pm

2 stops15h 50m

$344

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Sun 8/9

12:55 pm-4:55 pm

2 stops20h 00m

$420

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Mon 8/10

10:29 am-5:30 pm

2 stops23h 01m

$429

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Wed 8/12

6:00 am-1:35 pm

2 stops23h 35m

$429

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/6

Showing 1-10 of 13 resultsSorted by cheapest first
1
2

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 15h 34m. Fly via British Airways or KLM to get the fastest option. The distance from Ontario to Belfast is about 5095 mi. This flight may include one or multiple stops.

  • 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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Alternative routes for Ontario to Belfast

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