$353+ 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 9/11. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — DUB
Sep 5 — Sep 121
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 August 6, 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 6, 2026.
This JetBlue deal was found by Cheapflights users on 8/3. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2411:59 pm -
1 stop25h 01m
Wed 9/911:30 am -
1 stop17h 27m
Deal found 8/3![JetBlue logo]()
$734
This KAYAK deal was found by Cheapflights users on 8/3. 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 9/511:13 pm -
1 stop25h 47m
Wed 9/1611:30 am -
1 stop17h 27m
Deal found 8/3![JetBlue logo]()
$743
This Ovago deal was found by Cheapflights users on 8/3. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2411:59 pm -
1 stop25h 01m
Wed 9/211:30 am -
1 stop19h 07m
Deal found 8/3![JetBlue logo]()
$744
This Priceline deal was found by Cheapflights users on 8/4. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/711:59 pm -
1 stop25h 01m
Fri 9/1111:30 am -
1 stop17h 27m
Deal found 8/4![JetBlue logo]()
$745
This KAYAK deal was found by Cheapflights users on 8/3. 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.
Wed 9/2310:39 pm -
1 stop26h 21m
Wed 10/711:30 am -
1 stop17h 30m
Deal found 8/3![JetBlue logo]()
$759
This Justfly.com deal was found by Cheapflights users on 8/1. 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.
Sun 8/3011:59 pm -
1 stop25h 01m
Sat 9/511:30 am -
1 stop18h 29m
Deal found 8/1![JetBlue logo]()
$761
This BusinessClass deal was found by Cheapflights users on 8/5. 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.
Fri 9/1110:39 pm -
1 stop26h 21m
Wed 9/1611:30 am -
1 stop17h 27m
Deal found 8/5![JetBlue logo]()
$767
This Ovago deal was found by Cheapflights users on 8/2. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/910:39 pm -
1 stop26h 21m
Sat 9/1911:30 am -
1 stop17h 27m
Deal found 8/2![JetBlue logo]()
$775
This KAYAK deal was found by Cheapflights users on 8/5. 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.
Mon 9/1410:39 pm -
1 stop26h 21m
Tue 9/2911:30 am -
1 stop17h 27m
Deal found 8/5![JetBlue logo]()
$790
This Priceline deal was found by Cheapflights users on 8/1. 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.
Wed 9/910:39 pm -
1 stop26h 21m
Wed 9/2311:30 am -
1 stop17h 27m
Deal found 8/1![JetBlue logo]()
$792
This KAYAK deal was found by Cheapflights users on 8/5. 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.
Tue 9/811:59 pm -
1 stop25h 01m
Mon 9/1411:30 am -
1 stop17h 27m
Deal found 8/5![JetBlue logo]()
$793
This United Airlines deal was found by Cheapflights users on 8/2. 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 9/167:00 am -
1 stop16h 30m
Wed 9/239:30 am -
1 stop21h 29m
Deal found 8/2![United Airlines 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 August 6, 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 6, 2026.
This United Airlines deal was found by Cheapflights users on 8/2. 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 9/167:00 am -
1 stop16h 30m
Wed 9/239:30 am -
1 stop21h 29m
Deal found 8/2![United Airlines logo]()
$841
This KLM deal was found by Cheapflights users on 8/3. 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.
Wed 9/237:05 am -
1 stop17h 40m
Wed 10/711:10 am -
2 stops19h 33m
Deal found 8/3![KLM logo]()
$956
This oojo deal was found by Cheapflights users on 8/3. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/1410:58 am -
2 stops16h 12m
Mon 1/185:35 pm -
2 stops37h 14m
Deal found 8/3![British Airways logo]()
$1,169
This KLM deal was found by Cheapflights users on 8/1. 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 8/257:05 am -
2 stops20h 05m
Thu 9/31:05 pm -
2 stops35h 19m
Deal found 8/1![Multiple Airlines logo]()
$1,189
This United Airlines deal was found by Cheapflights users on 8/3. 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.
Sun 11/17:00 am -
1 stop17h 10m
Sat 11/149:00 am -
2 stops17h 01m
Deal found 8/3![United Airlines logo]()
$921
This United Airlines deal was found by Cheapflights users on 8/5. 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 8/257:00 am -
1 stop18h 45m
Tue 9/19:50 am -
2 stops44h 45m
Deal found 8/5![United Airlines logo]()
$928
This United Airlines deal was found by Cheapflights users on 8/5. 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 8/247:00 am -
1 stop18h 45m
Tue 9/19:50 am -
2 stops44h 45m
Deal found 8/5![United Airlines logo]()
$928
This KLM deal was found by Cheapflights users on 8/4. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/67:05 am -
2 stops20h 05m
Tue 9/151:05 pm -
2 stops35h 30m
Deal found 8/4![Multiple Airlines logo]()
$1,189
This United Airlines deal was found by Cheapflights users on 8/5. 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 9/17:00 am -
1 stop16h 30m
Tue 9/159:30 am -
1 stop21h 29m
Deal found 8/5![United Airlines logo]()
$941
This Air France deal was found by Cheapflights users on 8/1. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/57:05 am -
2 stops20h 05m
Fri 9/181:05 pm -
2 stops18h 42m
Deal found 8/1![Multiple Airlines logo]()
$1,196
This United Airlines deal was found by Cheapflights users on 8/3. 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 9/57:00 am -
1 stop18h 45m
Sat 9/129:20 am -
2 stops42h 41m
Deal found 8/3![United Airlines logo]()
$948
This KLM deal was found by Cheapflights users on 8/3. 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
Fri 10/236:15 am -
2 stops18h 08m
Deal found 8/3![KLM logo]()
$1,482
This United Airlines deal was found by Cheapflights users on 8/5. 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 8/267:00 am -
1 stop18h 45m
Fri 9/49:20 am -
2 stops21h 15m
Deal found 8/5![United Airlines logo]()
$956
This United Airlines deal was found by Cheapflights users on 8/2. 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 9/235:00 am -
3 stops18h 45m
Wed 10/79:20 am -
2 stops21h 31m
Deal found 8/2![United Airlines logo]()
$959
This Ovago deal was found by Cheapflights users on 8/4. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2212:55 pm -
2 stops26h 30m
Sun 12/277:40 am -
2 stops22h 34m
Deal found 8/4![Multiple Airlines logo]()
$1,456
This United Airlines deal was found by Cheapflights users on 8/5. 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 8/267:00 am -
2 stops16h 45m
Wed 9/29:20 am -
2 stops21h 15m
Deal found 8/5![United Airlines logo]()
$959
This United Airlines deal was found by Cheapflights users on 8/5. 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 8/267:00 am -
1 stop18h 45m
Sat 9/59:50 am -
2 stops20h 45m
Deal found 8/5![United Airlines logo]()
$1,001
This United Airlines deal was found by Cheapflights users on 8/1. 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 9/255:00 am -
3 stops18h 45m
Tue 10/69:50 am -
2 stops20h 59m
Deal found 8/1![United Airlines logo]()
$1,009
This United Airlines deal was found by Cheapflights users on 8/3. 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 9/177:00 am -
1 stop18h 45m
Mon 9/219:20 am -
2 stops36h 41m
Deal found 8/3![United Airlines logo]()
$1,038
This United Airlines deal was found by Cheapflights users on 8/2. 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 8/227:00 am -
1 stop16h 30m
Sun 8/309:30 am -
1 stop21h 05m
Deal found 8/2![United Airlines logo]()
$1,041
This United Airlines deal was found by Cheapflights users on 8/5. 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 9/166:08 am -
2 stops17h 22m
Wed 9/3012:30 pm -
2 stops16h 28m
Deal found 8/5![United Airlines logo]()
$1,130
This British Airways deal was found by Cheapflights users on 8/5. 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.
Sat 12/192:42 pm -
2 stops16h 43m
Sat 1/27:40 am -
2 stops21h 18m
Deal found 8/5![British Airways logo]()
$3,660
This United Airlines deal was found by Cheapflights users on 8/5. 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 9/197:00 am -
1 stop16h 30m
Sat 9/2612:30 pm -
2 stops17h 29m
Deal found 8/5![United Airlines logo]()
$1,164
This United Airlines deal was found by Cheapflights users on 8/2. 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 8/177:00 am -
1 stop16h 30m
Sat 8/229:30 am -
1 stop21h 05m
Deal found 8/2![United Airlines logo]()
$1,207
Last-minute flights from Ontario to IrelandDiscover last-minute flight deals from Ontario to Ireland. Data last updated August 6, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Ireland. Data last updated August 6, 2026 and is based on user searches.
This JetBlue deal was found by Cheapflights users on 8/3. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2411:59 pm -
1 stop25h 01m
Wed 9/911:30 am -
1 stop17h 27m
Deal found 8/3![JetBlue logo]()
$734
This Ovago deal was found by Cheapflights users on 8/3. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2411:59 pm -
1 stop25h 01m
Wed 9/211:30 am -
1 stop19h 07m
Deal found 8/3![JetBlue logo]()
$744
This Justfly.com deal was found by Cheapflights users on 8/1. 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.
Sun 8/3011:59 pm -
1 stop25h 01m
Sat 9/511:30 am -
1 stop18h 29m
Deal found 8/1![JetBlue logo]()
$761
This KAYAK deal was found by Cheapflights users on 8/3. 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 9/511:13 pm -
1 stop25h 47m
Wed 9/1611:30 am -
1 stop17h 27m
Deal found 8/3![JetBlue logo]()
$743
This Priceline deal was found by Cheapflights users on 8/4. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/711:59 pm -
1 stop25h 01m
Fri 9/1111:30 am -
1 stop17h 27m
Deal found 8/4![JetBlue logo]()
$745
This KAYAK deal was found by Cheapflights users on 8/5. 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.
Tue 9/811:59 pm -
1 stop25h 01m
Mon 9/1411:30 am -
1 stop17h 27m
Deal found 8/5![JetBlue logo]()
$793
This Ovago deal was found by Cheapflights users on 8/2. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/910:39 pm -
1 stop26h 21m
Sat 9/1911:30 am -
1 stop17h 27m
Deal found 8/2![JetBlue logo]()
$775
This Priceline deal was found by Cheapflights users on 8/1. 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.
Wed 9/910:39 pm -
1 stop26h 21m
Wed 9/2311:30 am -
1 stop17h 27m
Deal found 8/1![JetBlue logo]()
$792
This BusinessClass deal was found by Cheapflights users on 8/5. 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.
Fri 9/1110:39 pm -
1 stop26h 21m
Wed 9/1611:30 am -
1 stop17h 27m
Deal found 8/5![JetBlue logo]()
$767
This KAYAK deal was found by Cheapflights users on 8/5. 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.
Mon 9/1410:39 pm -
1 stop26h 21m
Tue 9/2911:30 am -
1 stop17h 27m
Deal found 8/5![JetBlue logo]()
$790
This United Airlines deal was found by Cheapflights users on 8/2. 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 9/167:00 am -
1 stop16h 30m
Wed 9/239:30 am -
1 stop21h 29m
Deal found 8/2![United Airlines logo]()
$841
This KAYAK deal was found by Cheapflights users on 8/3. 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.
Wed 9/2310:39 pm -
1 stop26h 21m
Wed 10/711:30 am -
1 stop17h 30m
Deal found 8/3![JetBlue logo]()
$759
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 6, 2026.
Search for one-way flight options from Ontario to Ireland. Find affordable one-way fares based on user searches. Data last updated August 6, 2026.
This KAYAK deal was found by Cheapflights users on 8/4. 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.
Fri 9/1110:39 pm -
1 stop26h 21m
Deal found 8/4![JetBlue logo]()
$353
This Ovago deal was found by Cheapflights users on 8/3. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2411:59 pm -
1 stop25h 01m
Deal found 8/3![JetBlue logo]()
$354
This Justfly.com deal was found by Cheapflights users on 8/2. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/111:59 pm -
1 stop25h 01m
Deal found 8/2![JetBlue logo]()
$355
This Justfly.com deal was found by Cheapflights users on 8/1. 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.
Sun 8/3011:59 pm -
1 stop25h 01m
Deal found 8/1![JetBlue logo]()
$370
This KAYAK deal was found by Cheapflights users on 8/5. 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 10/410:39 pm -
1 stop26h 21m
Deal found 8/5![JetBlue logo]()
$384
This Ovago deal was found by Cheapflights users on 8/4. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1710:39 pm -
1 stop26h 21m
Deal found 8/4![JetBlue logo]()
$385
This Priceline deal was found by Cheapflights users on 8/5. 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.
Thu 9/1010:39 pm -
1 stop26h 21m
Deal found 8/5![JetBlue logo]()
$386
This FlightHub deal was found by Cheapflights users on 8/5. 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 9/1510:39 pm -
1 stop26h 21m
Deal found 8/5![JetBlue logo]()
$395
This Justfly.com deal was found by Cheapflights users on 8/2. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/211:59 pm -
1 stop25h 01m
Deal found 8/2![JetBlue logo]()
$407
This Expedia deal was found by Cheapflights users on 8/3. 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 8/2811:59 pm -
1 stop25h 01m
Deal found 8/3![JetBlue logo]()
$416
This Justfly.com deal was found by Cheapflights users on 8/1. 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.
Thu 8/2711:59 pm -
1 stop25h 01m
Deal found 8/1![JetBlue logo]()
$426
This Ovago deal was found by Cheapflights users on 8/3. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/2311:59 pm -
1 stop25h 01m
Deal found 8/3![JetBlue logo]()
$452
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 6, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $734 (JetBlue) |
One-way from | $353 (KAYAK) |
Popular in | June |
Cheapest in | February |
Average price | $701 |
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 2,558,603 searches. Data last updated August 6, 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
OntarioShannon
ONT Ontario - SNN Shannon
ONTSNN
Ontario
Wed 9/16
7:00 am-7:30 am
1 stop16h 30m
Shannon
Wed 9/23
9:30 am-10:59 pm
1 stop21h 29m
$841
OntarioDublin
ONT Ontario - DUB Dublin
ONTDUB
Ontario
Sun 11/1
7:00 am-8:10 am
1 stop17h 10m
Dublin
Sat 11/14
9:00 am-6:01 pm
2 stops17h 01m
$921
OntarioDublin
ONT Ontario - DUB Dublin
ONTDUB
Ontario
Tue 8/25
7:00 am-9:45 am
1 stop18h 45m
Dublin
Tue 9/1
9:50 am-10:35 pm
2 stops44h 45m
$928
OntarioDublin
ONT Ontario - DUB Dublin
ONTDUB
Ontario
Mon 8/24
7:00 am-9:45 am
1 stop18h 45m
Dublin
Tue 9/1
9:50 am-10:35 pm
2 stops44h 45m
$928
OntarioShannon
ONT Ontario - SNN Shannon
ONTSNN
Ontario
Tue 9/1
7:00 am-7:30 am
1 stop16h 30m
Shannon
Tue 9/15
9:30 am-10:59 pm
1 stop21h 29m
$941
OntarioDublin
ONT Ontario - DUB Dublin
ONTDUB
Ontario
Sat 9/5
7:00 am-9:45 am
1 stop18h 45m
Dublin
Sat 9/12
9:20 am-8:01 pm
2 stops42h 41m
$948
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
$956
OntarioDublin
ONT Ontario - DUB Dublin
ONTDUB
Ontario
Wed 8/26
7:00 am-9:45 am
1 stop18h 45m
Dublin
Fri 9/4
9:20 am-10:35 pm
2 stops21h 15m
$956
OntarioDublin
ONT Ontario - DUB Dublin
ONTDUB
Ontario
Wed 9/23
5:00 am-7:45 am
3 stops18h 45m
Dublin
Wed 10/7
9:20 am-10:51 pm
2 stops21h 31m
$959
OntarioDublin
ONT Ontario - DUB Dublin
ONTDUB
Ontario
Wed 8/26
7:00 am-7:45 am
2 stops16h 45m
Dublin
Wed 9/2
9:20 am-10:35 pm
2 stops21h 15m
$959
Showing 1-10 of 48 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-SNN
ONT-DUB
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-SNN
ONT-DUB
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 6, 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.
Overall
7.1
Entertainment
6.8
Comfort
7.2
Crew
7.9
Food
6.4
Boarding
7.5
Reviews
1 / 20
2.0
MediocreJeremy,Sep 2025
SAN - PHL
Overall
7.1
Entertainment
6.8
Comfort
7.2
Crew
7.9
Food
6.4
Boarding
7.5
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
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Ontario and Ireland flights
Browse other Ontario and Ireland flight options. Last updated on August 6, 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 2,558,603 searches. Data last updated August 6, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$728 | Average$1,339 | FlexibilityNo cancel fee | On-time71% |