$453+ 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 10/25. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BHD
Sep 22 — Sep 291
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Belfast with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Ontario to Belfast
Cheapest
Best
One-way
Cheapest flights from Ontario to BelfastExplore 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 August 23, 2026.
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 August 23, 2026.
This American Airlines deal was found by Cheapflights users on 8/22. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/171:05 pm -
2 stops18h 00m
Tue 10/278:45 am -
2 stops19h 26m
Deal found 8/22![American Airlines logo]()
$1,005
This American Airlines deal was found by Cheapflights users on 8/23. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/281:25 pm -
2 stops20h 00m
Tue 1/58:45 am -
2 stops21h 12m
Deal found 8/23![American Airlines logo]()
$1,132
This British Airways deal was found by Cheapflights users on 8/19. 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 12/281:25 pm -
2 stops21h 10m
Tue 1/510:00 am -
2 stops19h 57m
Deal found 8/19![British Airways logo]()
$1,165
This Gurufare deal was found by Cheapflights users on 8/23. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/281:25 pm -
2 stops18h 40m
Tue 1/57:00 am -
3 stops19h 45m
Deal found 8/23![Multiple Airlines logo]()
$1,386
This Ovago deal was found by Cheapflights users on 8/20. 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.
Mon 12/281:05 pm -
3 stops20h 15m
Tue 1/55:55 pm -
3 stops37h 11m
Deal found 8/20![Aer Lingus logo]()
$1,426
This Cheapflightsfares deal was found by Cheapflights users on 8/20. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/212:22 pm -
2 stops16h 53m
Tue 12/110:00 am -
2 stops17h 05m
Deal found 8/20![British Airways logo]()
$6,318
Best flights from Ontario to BelfastDiscover carefully curated flight deals from Ontario to Belfast that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 23, 2026.
Discover carefully curated flight deals from Ontario to Belfast that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 23, 2026.
This American Airlines deal was found by Cheapflights users on 8/22. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/171:05 pm -
2 stops18h 00m
Tue 10/278:45 am -
2 stops19h 26m
Deal found 8/22![American Airlines logo]()
$1,005
This British Airways deal was found by Cheapflights users on 8/19. 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 12/281:25 pm -
2 stops21h 10m
Tue 1/510:00 am -
2 stops19h 57m
Deal found 8/19![British Airways logo]()
$1,165
This Gurufare deal was found by Cheapflights users on 8/23. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/281:25 pm -
2 stops18h 40m
Tue 1/57:00 am -
3 stops19h 45m
Deal found 8/23![Multiple Airlines logo]()
$1,386
This Ovago deal was found by Cheapflights users on 8/20. 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.
Mon 12/281:05 pm -
3 stops20h 15m
Tue 1/55:55 pm -
3 stops37h 11m
Deal found 8/20![Aer Lingus logo]()
$1,426
This American Airlines deal was found by Cheapflights users on 8/23. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/281:25 pm -
2 stops20h 00m
Tue 1/58:45 am -
2 stops21h 12m
Deal found 8/23![American Airlines logo]()
$1,132
One-way flights from Ontario to BelfastSearch for one-way flight options from Ontario to Belfast. Find affordable one-way fares based on user searches. Data last updated August 23, 2026.
Search for one-way flight options from Ontario to Belfast. Find affordable one-way fares based on user searches. Data last updated August 23, 2026.
This Priceline deal was found by Cheapflights users on 8/19. 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 10/254:29 pm -
2 stops17h 21m
Deal found 8/19![British Airways logo]()
$453
This FlightHub deal was found by Cheapflights users on 8/19. 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 10/1510:25 am -
2 stops21h 05m
Deal found 8/19![British Airways logo]()
$490
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 August 23, 2026.
Round-trip from | $1,005 (American Airlines) |
|---|---|
One-way from | $453 (Priceline) |
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 7,457,451 searches. Data last updated August 23, 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
Cheapest round-trip
Quickest round-trip
OntarioBelfast
ONT Ontario - BHD Belfast City
ONTBHD
Ontario
Sat 10/17
1:05 pm-3:05 pm
2 stops18h 00m
Belfast City
Tue 10/27
8:45 am-9:11 pm
2 stops19h 26m
$1,005
OntarioBelfast
ONT Ontario - BHD Belfast City
ONTBHD
Ontario
Mon 12/28
1:25 pm-5:25 pm
2 stops20h 00m
Belfast City
Tue 1/5
8:45 am-9:57 pm
2 stops21h 12m
$1,132
OntarioBelfast
ONT Ontario - BHD Belfast City
ONTBHD
Ontario
Mon 12/28
1:25 pm-6:35 pm
2 stops21h 10m
Belfast City
Tue 1/5
10:00 am-9:57 pm
2 stops19h 57m
$1,165
OntarioBelfast
ONT Ontario - BHD Belfast City
ONTBHD
Ontario
Mon 12/28
1:25 pm-4:05 pm
2 stops18h 40m
Belfast City
Tue 1/5
7:00 am-6:45 pm
3 stops19h 45m
$1,386
OntarioBelfast
ONT Ontario - BHD Belfast City
ONTBHD
Ontario
Mon 12/28
1:05 pm-5:20 pm
3 stops20h 15m
Belfast City
Tue 1/5
5:55 pm-11:06 pm
3 stops37h 11m
$1,426
Cheapest one-way
OntarioBelfast
ONT Ontario - BHD Belfast City
ONTBHD
Ontario
Sun 10/25
4:29 pm-4:50 pm
2 stops17h 21m
$453
OntarioBelfast
ONT Ontario - BHD Belfast City
ONTBHD
Ontario
Thu 10/15
10:25 am-3:30 pm
2 stops21h 05m
$490
Quickest one-way
OntarioBelfast
ONT Ontario - BHD Belfast City
ONTBHD
Ontario
Sat 10/24
4:29 pm-5:45 pm
2 stops17h 16m
$490
Sorted by cheapest first
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.
ONT-BF1
ONT-BHD
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
ONT-BF1
ONT-BHD
No data available for this route at this time. Please check back soon.
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