$329+ 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 1/10. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — DUB
Oct 4 — Oct 111
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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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 September 4, 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 September 4, 2026.
This KLM deal was found by Cheapflights users on 9/1. 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 12/27:05 am -
1 stop16h 40m
Tue 12/89:40 am -
1 stop19h 19m
Deal found 9/1![KLM logo]()
$707
This Justfly.com deal was found by Cheapflights users on 9/1. 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.
Tue 12/12:09 pm -
2 stops18h 46m
Tue 12/811:00 am -
2 stops19h 12m
Deal found 9/1![British Airways logo]()
$714
This United Airlines deal was found by Cheapflights users on 8/30. 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.
Tue 11/37:00 am -
1 stop17h 10m
Thu 11/129:00 am -
2 stops35h 29m
Deal found 8/30![United Airlines logo]()
$748
This Expedia deal was found by Cheapflights users on 8/30. 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.
Tue 11/247:00 am -
1 stop16h 10m
Wed 12/210:00 am -
2 stops31h 40m
Deal found 8/30![Iberia logo]()
$752
This Orbitz deal was found by Cheapflights users on 8/30. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/31:35 pm -
2 stops33h 35m
Thu 11/129:00 am -
2 stops21h 48m
Deal found 8/30![Air Canada logo]()
$768
This Iberia deal was found by Cheapflights users on 8/31. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2010:25 am -
1 stop15h 20m
Thu 11/512:55 pm -
1 stop16h 37m
Deal found 8/31![Iberia logo]()
$772
This Expedia deal was found by Cheapflights users on 8/31. 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 10/911:05 pm -
1 stop25h 55m
Sat 10/1711:30 am -
1 stop18h 15m
Deal found 8/31![JetBlue logo]()
$774
This KLM deal was found by Cheapflights users on 9/1. 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.
Tue 11/107:05 am -
1 stop16h 40m
Tue 11/179:40 am -
1 stop19h 14m
Deal found 9/1![KLM logo]()
$775
This Priceline deal was found by Cheapflights users on 9/1. 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 9/2210:39 pm -
1 stop26h 21m
Wed 9/3011:30 am -
1 stop17h 27m
Deal found 9/1![JetBlue logo]()
$792
This Delta deal was found by Cheapflights users on 8/30. 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 12/257:05 am -
1 stop16h 40m
Thu 12/315:45 am -
2 stops24h 14m
Deal found 8/30![Delta logo]()
$807
This FlightHub deal was found by Cheapflights users on 9/3. 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.
Sun 10/1111:05 pm -
1 stop25h 55m
Fri 10/1611:30 am -
1 stop18h 44m
Deal found 9/3![JetBlue logo]()
$808
This KLM deal was found by Cheapflights users on 8/30. 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 10/1411:56 am -
2 stops20h 39m
Wed 10/216:15 am -
2 stops24h 28m
Deal found 8/30![KLM logo]()
$841
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 September 4, 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 September 4, 2026.
This KLM deal was found by Cheapflights users on 8/30. 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.
Sun 2/217:00 am -
1 stop16h 45m
Wed 3/39:40 am -
1 stop20h 34m
Deal found 8/30![KLM logo]()
$712
This United Airlines deal was found by Cheapflights users on 9/3. 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.
Thu 1/76:00 am -
2 stops17h 30m
Wed 1/1310:40 am -
1 stop16h 04m
Deal found 9/3![United Airlines logo]()
$762
This Icelandair deal was found by Cheapflights users on 9/3. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1010:40 am -
2 stops15h 35m
Fri 11/2011:30 am -
2 stops20h 01m
Deal found 9/3![Multiple Airlines logo]()
$1,013
This KLM deal was found by Cheapflights users on 8/31. 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.
Tue 10/207:07 am -
1 stop17h 38m
Sun 11/89:40 am -
1 stop16h 42m
Deal found 8/31![KLM logo]()
$818
This United Airlines deal was found by Cheapflights users on 8/31. 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 10/46:00 am -
2 stops20h 15m
Tue 10/1312:30 pm -
2 stops16h 28m
Deal found 8/31![United Airlines logo]()
$846
This KLM deal was found by Cheapflights users on 8/30. 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 10/1411:56 am -
2 stops20h 39m
Wed 10/216:15 am -
2 stops24h 28m
Deal found 8/30![KLM logo]()
$841
This United Airlines deal was found by Cheapflights users on 9/4. 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 10/147:00 am -
2 stops16h 20m
Wed 10/2810:40 am -
1 stop15h 07m
Deal found 9/4![United Airlines logo]()
$849
This KAYAK deal was found by Cheapflights users on 9/4. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/310:39 pm -
1 stop23h 21m
Sat 10/102:30 pm -
1 stop15h 44m
Deal found 9/4![JetBlue logo]()
$2,003
This United Airlines deal was found by Cheapflights users on 8/30. 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.
Thu 10/157:00 am -
2 stops16h 30m
Thu 10/229:50 am -
2 stops43h 08m
Deal found 8/30![United Airlines logo]()
$877
This Icelandair deal was found by Cheapflights users on 9/1. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/711:25 am -
2 stops14h 50m
Tue 2/1611:30 am -
2 stops19h 09m
Deal found 9/1![Multiple Airlines logo]()
$1,107
This United Airlines deal was found by Cheapflights users on 9/3. 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 10/197:00 am -
1 stop18h 45m
Mon 10/268:00 am -
2 stops41h 01m
Deal found 9/3![United Airlines logo]()
$878
This United Airlines deal was found by Cheapflights users on 9/1. 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 10/169:25 am -
2 stops16h 50m
Fri 10/2312:30 pm -
2 stops17h 29m
Deal found 9/1![United Airlines logo]()
$896
This KLM deal was found by Cheapflights users on 9/3. 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.
Sun 10/185:03 pm -
2 stops15h 32m
Tue 11/35:40 am -
2 stops19h 32m
Deal found 9/3![KLM logo]()
$1,176
This United Airlines deal was found by Cheapflights users on 8/31. 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.
Thu 10/159:25 am -
2 stops16h 50m
Thu 10/2212:30 pm -
2 stops32h 16m
Deal found 8/31![United Airlines logo]()
$908
This United Airlines deal was found by Cheapflights users on 8/30. 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 10/144:03 pm -
2 stops34h 12m
Wed 10/2112:30 pm -
2 stops16h 28m
Deal found 8/30![United Airlines logo]()
$909
This KAYAK deal was found by Cheapflights users on 9/3. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/310:39 pm -
1 stop23h 21m
Sat 10/102:30 pm -
1 stop15h 44m
Deal found 9/3![Multiple Airlines logo]()
$1,486
This KLM deal was found by Cheapflights users on 9/1. 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.
Sun 10/185:03 pm -
2 stops15h 32m
Mon 11/25:40 am -
2 stops19h 32m
Deal found 9/1![KLM logo]()
$1,230
This United Airlines deal was found by Cheapflights users on 9/1. 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 9/237:00 am -
1 stop18h 45m
Wed 10/79:20 am -
2 stops45h 29m
Deal found 9/1![United Airlines logo]()
$940
This United Airlines deal was found by Cheapflights users on 9/2. 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 10/237:00 am -
1 stop18h 45m
Sat 10/3110:40 am -
1 stop15h 07m
Deal found 9/2![United Airlines logo]()
$955
This United Airlines deal was found by Cheapflights users on 9/2. 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 10/178:03 am -
2 stops18h 12m
Sat 10/2412:30 pm -
2 stops17h 29m
Deal found 9/2![United Airlines logo]()
$956
This United Airlines deal was found by Cheapflights users on 9/3. 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 10/38:03 am -
2 stops18h 12m
Sat 10/1012:30 pm -
2 stops18h 19m
Deal found 9/3![United Airlines logo]()
$956
This BusinessClass deal was found by Cheapflights users on 9/3. 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.
Sat 10/310:25 am -
2 stops40h 55m
Sat 10/107:30 am -
2 stops21h 41m
Deal found 9/3![British Airways logo]()
$5,376
This United Airlines deal was found by Cheapflights users on 8/30. 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 9/217:00 am -
1 stop18h 45m
Thu 10/111:35 am -
1 stop19h 14m
Deal found 8/30![United Airlines logo]()
$967
This United Airlines deal was found by Cheapflights users on 8/31. 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 9/217:00 am -
1 stop16h 30m
Tue 9/2912:30 pm -
2 stops32h 16m
Deal found 8/31![United Airlines logo]()
$1,047
This United Airlines deal was found by Cheapflights users on 9/2. 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 10/75:00 am -
2 stops21h 15m
Sat 10/1712:30 pm -
2 stops18h 19m
Deal found 9/2![United Airlines logo]()
$1,141
Last-minute flights from Ontario to IrelandDiscover last-minute flight deals from Ontario to Ireland. Data last updated September 4, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Ireland. Data last updated September 4, 2026 and is based on user searches.
This Priceline deal was found by Cheapflights users on 9/1. 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 9/2210:39 pm -
1 stop26h 21m
Wed 9/3011:30 am -
1 stop17h 27m
Deal found 9/1![JetBlue logo]()
$792
This Expedia deal was found by Cheapflights users on 8/31. 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 10/911:05 pm -
1 stop25h 55m
Sat 10/1711:30 am -
1 stop18h 15m
Deal found 8/31![JetBlue logo]()
$774
This FlightHub deal was found by Cheapflights users on 9/3. 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.
Sun 10/1111:05 pm -
1 stop25h 55m
Fri 10/1611:30 am -
1 stop18h 44m
Deal found 9/3![JetBlue logo]()
$808
This Air Canada deal was found by Cheapflights users on 8/30. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/126:07 am -
2 stops41h 38m
Tue 10/209:50 am -
2 stops43h 08m
Deal found 8/30![Air Canada logo]()
$823
This United Airlines deal was found by Cheapflights users on 9/2. 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 10/126:00 am -
2 stops17h 30m
Tue 10/209:50 am -
2 stops44h 59m
Deal found 9/2![United Airlines logo]()
$827
This Air Canada deal was found by Cheapflights users on 9/4. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/135:00 am -
2 stops19h 15m
Sun 11/19:00 am -
2 stops19h 51m
Deal found 9/4![Air Canada logo]()
$822
This Delta deal was found by Cheapflights users on 9/3. 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.
Tue 10/137:07 am -
1 stop17h 38m
Mon 11/29:40 am -
1 stop33h 26m
Deal found 9/3![Delta logo]()
$832
This KLM deal was found by Cheapflights users on 8/30. 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 10/1411:56 am -
2 stops20h 39m
Wed 10/216:15 am -
2 stops24h 28m
Deal found 8/30![KLM logo]()
$841
This Delta deal was found by Cheapflights users on 9/4. 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 10/147:07 am -
1 stop17h 38m
Tue 10/271:25 pm -
2 stops33h 58m
Deal found 9/4![Delta logo]()
$841
This Iberia deal was found by Cheapflights users on 8/31. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2010:25 am -
1 stop15h 20m
Thu 11/512:55 pm -
1 stop16h 37m
Deal found 8/31![Iberia logo]()
$772
This Air Canada deal was found by Cheapflights users on 8/31. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/208:03 am -
2 stops15h 42m
Sat 11/79:00 am -
2 stops17h 01m
Deal found 8/31![Multiple Airlines logo]()
$814
This KLM deal was found by Cheapflights users on 8/31. 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.
Tue 10/207:07 am -
1 stop17h 38m
Sun 11/89:40 am -
1 stop16h 42m
Deal found 8/31![KLM logo]()
$818
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 September 4, 2026.
Search for one-way flight options from Ontario to Ireland. Find affordable one-way fares based on user searches. Data last updated September 4, 2026.
This United Airlines deal was found by Cheapflights users on 9/2. 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 1/106:53 pm -
3 stops28h 37m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![United Airlines logo]()
$329
This United Airlines deal was found by Cheapflights users on 9/2. 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 1/1111:20 am -
3 stops36h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![United Airlines logo]()
$335
This United Airlines deal was found by Cheapflights users on 9/4. 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 12/95:00 am -
3 stops18h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![United Airlines logo]()
$338
This Delta deal was found by Cheapflights users on 9/4. 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 12/115:04 pm -
2 stops55h 41m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Delta logo]()
$351
This Kiwi.com deal was found by Cheapflights users on 9/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1711:52 am -
3 stops48h 23m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Multiple Airlines logo]()
$359
This Expedia deal was found by Cheapflights users on 9/2. 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.
Sat 10/1710:42 pm -
1 stop26h 18m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![JetBlue logo]()
$374
This Expedia deal was found by Cheapflights users on 9/3. 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 10/1611:05 pm -
1 stop25h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![JetBlue logo]()
$375
This United Airlines deal was found by Cheapflights users on 9/4. 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.
Thu 12/106:00 am -
2 stops18h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![United Airlines logo]()
$379
This Priceline deal was found by Cheapflights users on 9/3. 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 10/610:42 pm -
1 stop26h 18m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![JetBlue logo]()
$386
This United Airlines deal was found by Cheapflights users on 9/2. 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.
Thu 1/75:00 am -
3 stops18h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![United Airlines logo]()
$388
This United Airlines deal was found by Cheapflights users on 9/2. 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 1/811:20 am -
3 stops36h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![United Airlines logo]()
$403
This Gurufare deal was found by Cheapflights users on 9/3. 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 9/221:04 pm -
2 stops18h 06m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![British Airways logo]()
$554
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 September 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $707 (KLM) |
One-way from | $329 (United Airlines) |
Popular in | June |
Cheapest in | February |
Average price | $818 |
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 September 4, 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
Sun 12/13
7:00 am-8:10 am
1 stop17h 10m
Dublin
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$329
OntarioDublin
ONT Ontario - DUB Dublin
ONTDUB
Ontario
Tue 12/8
7:05 am-9:45 am
2 stops18h 40m
Dublin
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$329
OntarioDublin
ONT Ontario - DUB Dublin
ONTDUB
Ontario
Sun 10/18
11:05 pm-9:00 am
1 stop25h 55m
Dublin
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$386
Quickest round-trip
OntarioDublin
ONT Ontario - DUB Dublin
ONTDUB
Ontario
Wed 11/11
7:00 am-7:10 am
1 stop16h 10m
Dublin
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$466
OntarioDublin
ONT Ontario - DUB Dublin
ONTDUB
Ontario
Sun 11/8
7:07 am-7:45 am
1 stop16h 38m
Dublin
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$466
OntarioDublin
ONT Ontario - DUB Dublin
ONTDUB
Ontario
Sun 10/18
6:07 am-11:10 am
2 stops21h 03m
Dublin
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$466
OntarioDublin
ONT Ontario - DUB Dublin
ONTDUB
Ontario
Sun 11/8
6:00 am-7:30 am
2 stops17h 30m
Dublin
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$466
OntarioDublin
ONT Ontario - DUB Dublin
ONTDUB
Ontario
Wed 11/11
6:00 am-9:55 am
2 stops19h 55m
Dublin
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$466
OntarioDublin
ONT Ontario - DUB Dublin
ONTDUB
Ontario
Tue 9/15
7:00 am-9:45 am
1 stop18h 45m
Dublin
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$466
OntarioDublin
ONT Ontario - DUB Dublin
ONTDUB
Ontario
Tue 10/6
8:03 am-9:45 am
2 stops17h 42m
Dublin
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$466
Showing 1-10 of 37 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
ONT-SNN
ONT-ORK
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
ONT-SNN
ONT-ORK
No data available for this route at this time. Please check back soon.
Reviews of airlines servicing Ireland
Get insights into the airlines that provide service to Ireland. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ireland. Reviews last updated September 4, 2026.
Read through reviews of airlines operating flights from Ontario to Ireland, such as American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
6.8
Comfort
7.2
Boarding
7.5
Overall
7.1
Food
6.4
Crew
7.9
Reviews
1 / 20
2.0
MediocreJeremy,Sep 2025
SAN - PHL
Entertainment
6.8
Comfort
7.2
Boarding
7.5
Overall
7.1
Food
6.4
Crew
7.9
Reviews
1 / 20
2.0
MediocreJeremy,Sep 2025
SAN - PHL
Related info for your journey
Find useful and relevant information for your journey from Ontario to Ireland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Ontario to Ireland
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Ireland by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Ontario to Ireland by cabin class
Find flights from Ontario to Ireland, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Ontario and Ireland flights
Browse other Ontario and Ireland flight options. Last updated on September 4, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Ontario to Ireland flights
Consider these flights traveling from Ontario to Ireland.
Fly to Ireland regions
Consider these flights traveling to Ireland regions.
Top airline flying from Ontario to Ireland
Discover the top airline that operate flights from Ontario to Ireland. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$728 | Average$1,339 | FlexibilityNo cancel fee | On-time71% |