$377+ Cheap flights from Ontario (ONT) to Ireland
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 9/21. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — DUB
Sep 21 — Sep 281
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 August 22, 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 August 22, 2026.
This Delta deal was found by Cheapflights users on 8/21. 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 11/237:00 am -
1 stop16h 45m
Thu 11/265:45 am -
2 stops19h 28m
Deal found 8/21![Delta logo]()
$704
This KLM deal was found by Cheapflights users on 8/21. 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 12/276:00 am -
2 stops17h 55m
Tue 1/55:15 pm -
2 stops30h 57m
Deal found 8/21![KLM logo]()
$761
This KLM deal was found by Cheapflights users on 8/21. 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.
Mon 11/97:00 am -
1 stop16h 45m
Wed 11/189:40 am -
1 stop19h 06m
Deal found 8/21![KLM logo]()
$766
This Air France deal was found by Cheapflights users on 8/21. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/277:07 am -
1 stop17h 38m
Wed 11/49:40 am -
1 stop17h 50m
Deal found 8/21![Multiple Airlines logo]()
$775
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.
Fri 10/911:05 pm -
1 stop25h 55m
Fri 10/1611:30 am -
1 stop18h 39m
Deal found 8/19![JetBlue logo]()
$792
This CheapOair deal was found by Cheapflights users on 8/18. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1010:39 pm -
1 stop26h 21m
Fri 9/1811:30 am -
1 stop17h 27m
Deal found 8/18![JetBlue logo]()
$806
This Air France deal was found by Cheapflights users on 8/21. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/277:00 am -
1 stop16h 45m
Sun 12/69:40 am -
1 stop16h 51m
Deal found 8/21![Multiple Airlines logo]()
$807
This FlightHub deal was found by Cheapflights users on 8/18. 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 9/2310:39 pm -
1 stop26h 21m
Wed 10/711:30 am -
1 stop17h 30m
Deal found 8/18![JetBlue logo]()
$808
This KAYAK deal was found by Cheapflights users on 8/21. 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 9/1210:39 pm -
1 stop26h 21m
Mon 9/2111:30 am -
1 stop17h 27m
Deal found 8/21![JetBlue logo]()
$812
This Iberia 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/127:00 am -
1 stop16h 15m
Wed 11/181:00 pm -
1 stop18h 43m
Deal found 8/19![Iberia logo]()
$825
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2710:34 am -
2 stops22h 21m
Tue 1/54:20 pm -
2 stops38h 25m
Deal found 8/22![British Airways logo]()
$830
This United Airlines deal was found by Cheapflights users on 8/18. 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 9/206:08 am -
2 stops17h 22m
Tue 10/612:30 pm -
2 stops16h 28m
Deal found 8/18![United Airlines logo]()
$833
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 August 22, 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 August 22, 2026.
This Delta deal was found by Cheapflights users on 8/21. 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 11/237:00 am -
1 stop16h 45m
Thu 11/265:45 am -
2 stops19h 28m
Deal found 8/21![Delta logo]()
$704
This United Airlines deal was found by Cheapflights users on 8/18. 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 9/207:00 am -
1 stop16h 30m
Tue 10/612:30 pm -
2 stops16h 28m
Deal found 8/18![United Airlines logo]()
$833
This KLM deal was found by Cheapflights users on 8/21. 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 9/237:05 am -
1 stop17h 40m
Wed 10/711:10 am -
2 stops19h 33m
Deal found 8/21![KLM logo]()
$846
This Iberia deal was found by Cheapflights users on 8/17. 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.
Thu 9/1012:37 pm -
1 stop13h 08m
Wed 9/1612:40 pm -
1 stop17h 57m
Deal found 8/17![Iberia logo]()
$1,009
This Turkish Airlines deal was found by Cheapflights users on 8/21. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1611:05 pm -
2 stops40h 00m
Sun 10/256:10 am -
2 stops23h 10m
Deal found 8/21![Multiple Airlines logo]()
$1,106
This Priceline deal was found by Cheapflights users on 8/18. 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 12/122:22 pm -
2 stops18h 23m
Sat 12/267:50 am -
2 stops24h 09m
Deal found 8/18![British Airways logo]()
$1,356
This Delta deal was found by Cheapflights users on 8/21. 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 11/237:00 am -
1 stop16h 45m
Fri 11/275:45 am -
2 stops19h 28m
Deal found 8/21![Delta logo]()
$704
This United Airlines deal was found by Cheapflights users on 8/21. 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 10/57:00 am -
2 stops19h 15m
Mon 10/1212:30 pm -
2 stops32h 16m
Deal found 8/21![United Airlines logo]()
$920
This United Airlines deal was found by Cheapflights users on 8/21. 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 10/257:00 am -
1 stop18h 10m
Mon 11/210:40 am -
1 stop16h 07m
Deal found 8/21![United Airlines logo]()
$925
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/186:45 am -
2 stops16h 45m
Tue 3/210:40 am -
1 stop16h 04m
Deal found 8/20![United Airlines logo]()
$934
This Icelandair deal was found by Cheapflights users on 8/18. 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 11/156:30 am -
2 stops19h 45m
Sat 11/2111:30 am -
2 stops19h 34m
Deal found 8/18![Multiple Airlines logo]()
$1,162
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/67:00 am -
1 stop18h 45m
Tue 10/139:50 am -
2 stops20h 59m
Deal found 8/22![United Airlines logo]()
$956
This United Airlines 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 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 stops40h 28m
Deal found 8/19![United Airlines logo]()
$970
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/47:00 am -
1 stop18h 45m
Sun 10/1111:35 am -
1 stop19h 14m
Deal found 8/20![United Airlines logo]()
$1,020
This Air France 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/77:05 am -
2 stops20h 05m
Wed 9/161:05 pm -
2 stops18h 42m
Deal found 8/20![Multiple Airlines logo]()
$1,590
This United Airlines deal was found by Cheapflights users on 8/18. 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 10/26:00 am -
2 stops20h 15m
Fri 10/912:30 pm -
2 stops32h 16m
Deal found 8/18![United Airlines logo]()
$1,132
This KLM 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/235:15 pm -
2 stops15h 20m
Mon 9/286:15 am -
2 stops18h 20m
Deal found 8/19![KLM logo]()
$2,168
This United Airlines deal was found by Cheapflights users on 8/18. 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 9/127:00 am -
1 stop18h 45m
Mon 9/2111:35 am -
1 stop19h 24m
Deal found 8/18![United Airlines logo]()
$1,149
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/186:00 am -
2 stops17h 30m
Fri 9/2512:30 pm -
2 stops17h 29m
Deal found 8/19![United Airlines logo]()
$1,181
This KLM deal was found by Cheapflights users on 8/18. 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 9/235:15 pm -
2 stops15h 20m
Sun 9/276:15 am -
2 stops18h 20m
Deal found 8/18![KLM logo]()
$2,401
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/275:00 am -
3 stops21h 20m
Tue 1/59:00 am -
2 stops19h 20m
Deal found 8/20![United Airlines logo]()
$1,186
This KLM deal was found by Cheapflights users on 8/18. 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.
Fri 10/95:03 pm -
2 stops15h 37m
Sun 10/186:15 am -
2 stops18h 08m
Deal found 8/18![KLM logo]()
$2,451
This United Airlines deal was found by Cheapflights users on 8/21. 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 9/36:08 am -
2 stops17h 22m
Tue 9/229:30 am -
2 stops19h 23m
Deal found 8/21![United Airlines logo]()
$1,545
This KAYAK 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/205:15 pm -
2 stops33h 00m
Sun 9/276:15 am -
2 stops19h 04m
Deal found 8/20![KLM logo]()
$6,913
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/157:00 am -
1 stop16h 30m
Thu 9/179:30 am -
1 stop21h 29m
Deal found 8/20![United Airlines logo]()
$11,527
Last-minute flights from Ontario to IrelandDiscover last-minute flight deals from Ontario to Ireland. Data last updated August 22, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Ireland. Data last updated August 22, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 8/18. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1010:39 pm -
1 stop26h 21m
Fri 9/1811:30 am -
1 stop17h 27m
Deal found 8/18![JetBlue logo]()
$806
This KAYAK deal was found by Cheapflights users on 8/21. 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 9/1210:39 pm -
1 stop26h 21m
Mon 9/2111:30 am -
1 stop17h 27m
Deal found 8/21![JetBlue logo]()
$812
This Priceline deal was found by Cheapflights users on 8/21. 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.
Fri 9/1810:39 pm -
1 stop26h 21m
Wed 9/3011:30 am -
1 stop17h 27m
Deal found 8/21![JetBlue logo]()
$792
This United Airlines deal was found by Cheapflights users on 8/18. 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 9/206:08 am -
2 stops17h 22m
Tue 10/612:30 pm -
2 stops16h 28m
Deal found 8/18![United Airlines logo]()
$833
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.
Mon 9/2112:37 pm -
1 stop13h 08m
Wed 10/712:40 pm -
1 stop14h 04m
Deal found 8/22![American Airlines logo]()
$842
This FlightHub deal was found by Cheapflights users on 8/18. 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 9/2310:39 pm -
1 stop26h 21m
Wed 10/711:30 am -
1 stop17h 30m
Deal found 8/18![JetBlue logo]()
$808
This KLM deal was found by Cheapflights users on 8/21. 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 9/237:05 am -
1 stop17h 40m
Wed 10/711:10 am -
2 stops19h 33m
Deal found 8/21![KLM logo]()
$846
This Iberia deal was found by Cheapflights users on 8/21. 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.
Wed 9/2310:25 am -
1 stop15h 20m
Wed 10/712:40 pm -
1 stop19h 12m
Deal found 8/21![Iberia logo]()
$850
This Delta deal was found by Cheapflights users on 8/21. 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 9/236:00 am -
2 stops20h 00m
Wed 10/78:55 am -
2 stops21h 48m
Deal found 8/21![Delta logo]()
$851
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/236:00 am -
2 stops16h 30m
Wed 10/712:40 pm -
2 stops18h 13m
Deal found 8/20![American Airlines logo]()
$854
This American Airlines deal was found by Cheapflights users on 8/21. 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.
Sun 9/2712:37 pm -
1 stop13h 08m
Tue 10/1312:40 pm -
1 stop14h 04m
Deal found 8/21![American Airlines logo]()
$897
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2812:37 pm -
1 stop13h 08m
Wed 10/1412:40 pm -
1 stop14h 04m
Deal found 8/20![American Airlines logo]()
$895
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 August 22, 2026.
Search for one-way flight options from Ontario to Ireland. Find affordable one-way fares based on user searches. Data last updated August 22, 2026.
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2110:39 pm -
1 stop26h 21m
Deal found 8/20![JetBlue logo]()
$377
This Delta deal was found by Cheapflights users on 8/21. 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 11/227:00 am -
2 stops18h 45m
Deal found 8/21![Delta logo]()
$382
This Priceline deal was found by Cheapflights users on 8/17. 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 9/1910:39 pm -
1 stop26h 21m
Deal found 8/17![JetBlue logo]()
$386
This Delta deal was found by Cheapflights users on 8/21. 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.
Sat 11/2112:22 pm -
2 stops36h 23m
Deal found 8/21![Delta logo]()
$400
This Delta deal was found by Cheapflights users on 8/21. 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 11/2011:10 pm -
2 stops50h 35m
Deal found 8/21![Delta logo]()
$405
This United Airlines deal was found by Cheapflights users on 8/17. 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 9/287:00 am -
2 stops19h 15m
Deal found 8/17![United Airlines logo]()
$463
This Iberia 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/77:05 am -
1 stop18h 40m
Deal found 8/19![Iberia logo]()
$466
This Trip.com deal was found by Cheapflights users on 8/21. 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.
Fri 11/206:00 am -
1 stop17h 15m
Deal found 8/21![Iberia logo]()
$489
This American Airlines deal was found by Cheapflights users on 8/21. 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 11/2111:59 pm -
1 stop23h 16m
Deal found 8/21![American Airlines logo]()
$492
This United Airlines deal was found by Cheapflights users on 8/17. 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 10/167:00 am -
2 stops19h 15m
Deal found 8/17![United Airlines logo]()
$513
This Iberia 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/167:00 am -
1 stop18h 45m
Deal found 8/20![Iberia logo]()
$516
This Icelandair 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2110:47 am -
2 stops18h 28m
Deal found 8/20![Multiple Airlines logo]()
$528
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 August 22, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $704 (Delta) |
One-way from | $377 (FlightHub) |
Popular in | June |
Cheapest in | February |
Average price | $724 |
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 August 22, 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
Mon 11/23
7:00 am-7:45 am
1 stop16h 45m
Dublin
Thu 11/26
5:45 am-5:13 pm
2 stops19h 28m
$704
OntarioDublin
ONT Ontario - DUB Dublin
ONTDUB
Ontario
Mon 11/23
7:00 am-7:45 am
1 stop16h 45m
Dublin
Fri 11/27
5:45 am-5:13 pm
2 stops19h 28m
$704
OntarioShannon
ONT Ontario - SNN Shannon
ONTSNN
Ontario
Sun 9/20
7:00 am-7:30 am
1 stop16h 30m
Shannon
Tue 10/6
12:30 pm-8:58 pm
2 stops16h 28m
$833
OntarioDublin
ONT Ontario - DUB Dublin
ONTDUB
Ontario
Wed 9/23
7:05 am-8:45 am
1 stop17h 40m
Dublin
Wed 10/7
11:10 am-10:43 pm
2 stops19h 33m
$846
OntarioShannon
ONT Ontario - SNN Shannon
ONTSNN
Ontario
Mon 10/5
7:00 am-10:15 am
2 stops19h 15m
Shannon
Mon 10/12
12:30 pm-12:46 pm
2 stops32h 16m
$920
OntarioDublin
ONT Ontario - DUB Dublin
ONTDUB
Ontario
Sun 10/25
7:00 am-8:10 am
1 stop18h 10m
Dublin
Mon 11/2
10:40 am-6:47 pm
1 stop16h 07m
$925
OntarioDublin
ONT Ontario - DUB Dublin
ONTDUB
Ontario
Thu 2/18
6:45 am-7:30 am
2 stops16h 45m
Dublin
Tue 3/2
10:40 am-6:44 pm
1 stop16h 04m
$934
OntarioDublin
ONT Ontario - DUB Dublin
ONTDUB
Ontario
Tue 10/6
7:00 am-9:45 am
1 stop18h 45m
Dublin
Tue 10/13
9:50 am-10:49 pm
2 stops20h 59m
$956
OntarioShannon
ONT Ontario - SNN Shannon
ONTSNN
Ontario
Sat 10/3
8:03 am-10:15 am
2 stops18h 12m
Shannon
Sat 10/10
12:30 pm-8:58 pm
2 stops40h 28m
$970
Quickest round-trip
OntarioDublin
ONT Ontario - DUB Dublin
ONTDUB
Ontario
Thu 9/10
12:37 pm-9:45 am
1 stop13h 08m
Dublin
Wed 9/16
12:40 pm-10:37 pm
1 stop17h 57m
$1,009
Showing 1-10 of 46 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 August 22, 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.
Crew
7.9
Overall
7.1
Comfort
7.2
Food
6.4
Boarding
7.5
Entertainment
6.8
Reviews
1 / 20
2.0
MediocreJeremy,Sep 2025
SAN - PHL
Crew
7.9
Overall
7.1
Comfort
7.2
Food
6.4
Boarding
7.5
Entertainment
6.8
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
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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 August 22, 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 August 22, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$728 | Average$1,339 | FlexibilityNo cancel fee | On-time71% |