$326+ Cheap flights from Ontario (ONT) to Ireland
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/6. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — DUB
Dec 14 — Dec 211
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Ireland 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
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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 Ireland
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Cheapest flights from Ontario to IrelandExplore the most affordable flight options available from Ontario to Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 14, 2026.
Explore the most affordable flight options available from Ontario to Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 14, 2026.
This Mytrip deal was found by Cheapflights users on 11/9. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/26:00 am -
2 stops17h 10m
Sun 12/69:00 am -
3 stops30h 44m
Deal found 11/9![Multiple Airlines logo]()
$661
This Mytrip deal was found by Cheapflights users on 11/12. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/46:00 am -
2 stops17h 10m
Sun 12/139:00 am -
3 stops30h 44m
Deal found 11/12![Multiple Airlines logo]()
$746
This Mytrip deal was found by Cheapflights users on 11/12. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/46:00 am -
2 stops20h 15m
Sat 12/1211:30 am -
3 stops28h 14m
Deal found 11/12![Multiple Airlines logo]()
$751
This Mytrip deal was found by Cheapflights users on 11/12. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/37:06 pm -
3 stops31h 09m
Sat 12/1211:30 am -
3 stops28h 14m
Deal found 11/12![Multiple Airlines logo]()
$764
This Delta deal was found by Cheapflights users on 11/10. 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.
Wed 12/97:05 am -
1 stop16h 40m
Wed 12/165:45 am -
2 stops26h 12m
Deal found 11/10![Delta logo]()
$780
This Delta deal was found by Cheapflights users on 11/10. 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.
Wed 12/97:05 am -
1 stop16h 40m
Thu 12/179:55 am -
1 stop16h 43m
Deal found 11/10![Delta logo]()
$784
Best flights from Ontario to IrelandDiscover carefully curated flight deals from Ontario to Ireland that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 14, 2026.
Discover carefully curated flight deals from Ontario to Ireland that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 14, 2026.
This United Airlines deal was found by Cheapflights users on 11/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/287:00 am -
2 stops18h 55m
Thu 3/49:00 am -
2 stops45h 59m
Deal found 11/10![United Airlines logo]()
$699
This Delta deal was found by Cheapflights users on 11/12. 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.
Sun 3/287:00 am -
1 stop17h 45m
Sun 4/45:55 am -
2 stops18h 17m
Deal found 11/12![Delta logo]()
$772
This United Airlines deal was found by Cheapflights users on 11/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/45:00 am -
2 stops20h 45m
Sat 4/109:50 am -
2 stops44h 41m
Deal found 11/12![United Airlines logo]()
$754
This Delta deal was found by Cheapflights users on 11/10. 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.
Wed 12/97:05 am -
1 stop16h 40m
Tue 12/1510:45 am -
1 stop18h 13m
Deal found 11/10![Delta logo]()
$784
This United Airlines deal was found by Cheapflights users on 11/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/411:52 pm -
1 stop24h 18m
Wed 1/209:30 am -
2 stops37h 48m
Deal found 11/14![United Airlines logo]()
$779
This Delta deal was found by Cheapflights users on 11/10. 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.
Wed 12/97:05 am -
2 stops17h 40m
Thu 12/179:55 am -
1 stop16h 43m
Deal found 11/10![Delta logo]()
$789
This United Airlines deal was found by Cheapflights users on 11/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/266:00 am -
2 stops18h 30m
Fri 4/211:35 am -
2 stops19h 31m
Deal found 11/12![United Airlines logo]()
$832
This Delta deal was found by Cheapflights users on 11/10. 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 12/77:05 am -
1 stop16h 40m
Thu 12/179:55 am -
1 stop16h 43m
Deal found 11/10![Delta logo]()
$870
This United Airlines deal was found by Cheapflights users on 11/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/27:00 am -
1 stop17h 10m
Wed 12/1610:40 am -
1 stop16h 04m
Deal found 11/14![United Airlines logo]()
$870
This United Airlines deal was found by Cheapflights users on 11/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/307:00 am -
1 stop17h 10m
Mon 12/710:40 am -
1 stop16h 04m
Deal found 11/10![United Airlines logo]()
$920
This United Airlines deal was found by Cheapflights users on 11/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/206:00 am -
2 stops18h 30m
Sun 3/288:50 am -
2 stops20h 31m
Deal found 11/10![United Airlines logo]()
$939
This United Airlines deal was found by Cheapflights users on 11/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/206:00 am -
2 stops18h 30m
Thu 3/2510:40 am -
2 stops19h 19m
Deal found 11/12![United Airlines logo]()
$1,000
Last-minute flights from Ontario to IrelandDiscover last-minute flight deals from Ontario to Ireland. Data last updated November 14, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Ireland. Data last updated November 14, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 11/9. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/26:00 am -
2 stops17h 10m
Sun 12/69:00 am -
3 stops30h 44m
Deal found 11/9![Multiple Airlines logo]()
$661
This Mytrip deal was found by Cheapflights users on 11/12. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/37:06 pm -
3 stops31h 09m
Sat 12/1211:30 am -
3 stops28h 14m
Deal found 11/12![Multiple Airlines logo]()
$764
This Mytrip deal was found by Cheapflights users on 11/12. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/46:00 am -
2 stops17h 10m
Sun 12/139:00 am -
3 stops30h 44m
Deal found 11/12![Multiple Airlines logo]()
$746
This Mytrip deal was found by Cheapflights users on 11/12. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/46:00 am -
2 stops20h 15m
Sat 12/1211:30 am -
3 stops28h 14m
Deal found 11/12![Multiple Airlines logo]()
$751
This Delta deal was found by Cheapflights users on 11/10. 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.
Wed 12/97:05 am -
1 stop16h 40m
Wed 12/165:45 am -
2 stops26h 12m
Deal found 11/10![Delta logo]()
$780
This Delta deal was found by Cheapflights users on 11/10. 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.
Wed 12/97:05 am -
1 stop16h 40m
Thu 12/179:55 am -
1 stop16h 43m
Deal found 11/10![Delta logo]()
$784
One-way flights from Ontario to IrelandSearch for one-way flight options from Ontario to Ireland. Find affordable one-way fares based on user searches. Data last updated November 14, 2026.
Search for one-way flight options from Ontario to Ireland. Find affordable one-way fares based on user searches. Data last updated November 14, 2026.
This FlightHub deal was found by Cheapflights users on 11/10. 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.
Tue 4/62:08 pm -
2 stops20h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/10![British Airways logo]()
$326
This FlightHub deal was found by Cheapflights users on 11/13. 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 3/310:34 am -
2 stops19h 31m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/13![British Airways logo]()
$332
This Delta deal was found by Cheapflights users on 11/10. 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.
Wed 3/37:05 am -
1 stop16h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/10![Delta logo]()
$334
This United Airlines deal was found by Cheapflights users on 11/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/54:03 pm -
2 stops33h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/14![United Airlines logo]()
$351
This Justfly.com deal was found by Cheapflights users on 11/10. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/2611:27 am -
2 stops59h 43m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/10![Air Canada logo]()
$353
This United Airlines deal was found by Cheapflights users on 11/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/56:30 am -
1 stop17h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/10![United Airlines logo]()
$384
This United Airlines deal was found by Cheapflights users on 11/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/186:00 am -
2 stops21h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/13![United Airlines logo]()
$386
This Delta deal was found by Cheapflights users on 11/12. 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.
Fri 4/166:00 am -
2 stops17h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/12![Delta logo]()
$390
This Delta deal was found by Cheapflights users on 11/12. 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.
Thu 4/1510:59 pm -
1 stop25h 46m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/12![Delta logo]()
$397
This FlightHub deal was found by Cheapflights users on 11/11. 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.
Fri 4/302:08 pm -
2 stops19h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/11![British Airways logo]()
$425
This FlightHub deal was found by Cheapflights users on 11/11. 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 12/302:22 pm -
2 stops18h 38m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/11![British Airways logo]()
$454
This FlightHub deal was found by Cheapflights users on 11/12. 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.
Mon 1/1112:45 pm -
2 stops20h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/12![British Airways logo]()
$457
Find flight deals from Ontario to Ireland
Keep the following information in mind while searching for Ontario to Ireland flight deals. Data was last updated November 14, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $661 (Mytrip) |
One-way from | $326 (FlightHub) |
Popular in | June |
Cheapest in | February |
Average price | $860 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Ireland 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 November 14, 2026.
Use the filters below to find and compare flights from Ontario to Ireland that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioDublin
ONT Ontario - DUB Dublin
ONTDUB
Ontario
Tue 4/6
2:08 pm-6:50 pm
2 stops20h 42m
Dublin
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$326
OntarioDublin
ONT Ontario - DUB Dublin
ONTDUB
Ontario
Sun 4/18
7:00 am-9:45 am
1 stop18h 45m
Dublin
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$334
OntarioDublin
ONT Ontario - DUB Dublin
ONTDUB
Ontario
Wed 3/3
7:05 am-8:45 am
2 stops17h 40m
Dublin
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$334
OntarioDublin
ONT Ontario - DUB Dublin
ONTDUB
Ontario
Mon 4/5
7:00 am-9:45 am
1 stop18h 45m
Dublin
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$334
Quickest round-trip
OntarioDublin
ONT Ontario - DUB Dublin
ONTDUB
Ontario
Wed 3/3
7:00 am-8:10 am
1 stop17h 10m
Dublin
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$334
OntarioDublin
ONT Ontario - DUB Dublin
ONTDUB
Ontario
Sun 5/2
7:00 am-9:45 am
1 stop18h 45m
Dublin
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$334
OntarioDublin
ONT Ontario - DUB Dublin
ONTDUB
Ontario
Fri 3/5
6:30 am-8:10 am
1 stop17h 40m
Dublin
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$384
OntarioDublin
ONT Ontario - DUB Dublin
ONTDUB
Ontario
Fri 4/30
6:00 am-7:20 am
2 stops17h 20m
Dublin
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$384
OntarioDublin
ONT Ontario - DUB Dublin
ONTDUB
Ontario
Sun 2/28
7:00 am-9:55 am
2 stops18h 55m
Dublin
Thu 3/4
9:00 am-10:59 pm
2 stops45h 59m
$699
OntarioDublin
ONT Ontario - DUB Dublin
ONTDUB
Ontario
Sun 4/4
5:00 am-9:45 am
2 stops20h 45m
Dublin
Sat 4/10
9:50 am-10:31 pm
2 stops44h 41m
$754
Showing 1-10 of 20 resultsSorted by cheapest first
Best time to book a flight from Ontario to Ireland
Have a flexible travel schedule? Discover the best time to fly to Ireland from Ontario with our price prediction graph.
ONT-DUB
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 Ireland
ONT-IE0
ONT-DUB
No data available for this route at this time. Please check back soon.
Related info for your journey
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