$321+ Cheap flights from Ontario (ONT) to Dublin (DUB)
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 8/29. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — DUB
Aug 21 — Aug 281
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Dublin 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 DublinExplore the most affordable flight options available from Ontario to Dublin. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 22, 2026.
Explore the most affordable flight options available from Ontario to Dublin. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 22, 2026.
This Expedia deal was found by Cheapflights users on 7/20. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/1311:59 pm
ONT
- DUB
1 stop25h 01m
JetBlue
Wed 8/2611:30 am
DUB
- ONT
1 stop19h 07m
JetBlue
Deal found 7/20![JetBlue logo]()
$833
This JetBlue deal was found by Cheapflights users on 7/21. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/2311:59 pm
ONT
- DUB
1 stop25h 01m
JetBlue
Tue 9/811:30 am
DUB
- ONT
1 stop19h 05m
JetBlue
Deal found 7/21![JetBlue logo]()
$850
This United Airlines deal was found by Cheapflights users on 7/19. 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.
Tue 9/87:00 am
ONT
- DUB
2 stops16h 20m
United Airlines
Tue 9/159:20 am
DUB
- ONT
2 stops45h 39m
United Airlines
Deal found 7/19![United Airlines logo]()
$852
This Cheapflightsfares deal was found by Cheapflights users on 7/22. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/211:59 pm
ONT
- DUB
1 stop25h 01m
JetBlue
Fri 9/1111:30 am
DUB
- ONT
1 stop17h 27m
JetBlue
Deal found 7/22![JetBlue logo]()
$858
This United Airlines deal was found by Cheapflights users on 7/22. 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.
Wed 9/25:00 am
ONT
- DUB
2 stops18h 30m
United Airlines
Fri 9/119:20 am
DUB
- ONT
2 stops42h 41m
United Airlines
Deal found 7/22![United Airlines logo]()
$862
This Air Canada deal was found by Cheapflights users on 7/19. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/179:01 am
ONT
- DUB
2 stops15h 14m
Multiple Airlines
Wed 9/29:50 am
DUB
- ONT
2 stops16h 26m
Multiple Airlines
Deal found 7/19![Multiple Airlines logo]()
$866
This Ovago deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/711:59 pm
ONT
- DUB
1 stop25h 01m
JetBlue
Wed 9/1611:30 am
DUB
- ONT
1 stop16h 43m
JetBlue
Deal found 7/20![JetBlue logo]()
$867
This Priceline deal was found by Cheapflights users on 7/20. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/811:08 pm
ONT
- DUB
1 stop25h 52m
JetBlue
Thu 9/1711:30 am
DUB
- ONT
1 stop16h 43m
JetBlue
Deal found 7/20![JetBlue logo]()
$868
This BusinessClass deal was found by Cheapflights users on 7/20. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/1611:59 pm
ONT
- DUB
1 stop25h 01m
JetBlue
Tue 8/2511:30 am
DUB
- ONT
1 stop19h 07m
JetBlue
Deal found 7/20![JetBlue logo]()
$869
This American Airlines deal was found by Cheapflights users on 7/20. 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 8/1712:33 pm
ONT
- DUB
1 stop13h 12m
American Airlines
Tue 9/112:40 pm
DUB
- ONT
1 stop14h 07m
American Airlines
Deal found 7/20![American Airlines logo]()
$870
Best flights from Ontario to DublinDiscover carefully curated flight deals from Ontario to Dublin that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 22, 2026.
Discover carefully curated flight deals from Ontario to Dublin that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 22, 2026.
This United Airlines deal was found by Cheapflights users on 7/22. 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.
Wed 9/25:00 am
ONT
- DUB
2 stops18h 30m
United Airlines
Fri 9/119:20 am
DUB
- ONT
2 stops42h 41m
United Airlines
Deal found 7/22![United Airlines logo]()
$862
This KLM deal was found by Cheapflights users on 7/21. 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 11/117:00 am
ONT
- DUB
1 stop16h 45m
KLM
Wed 11/189:45 am
DUB
- ONT
1 stop16h 33m
KLM
Deal found 7/21![KLM logo]()
$875
This JetBlue deal was found by Cheapflights users on 7/18. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/811:08 pm
ONT
- DUB
1 stop25h 52m
JetBlue
Sun 8/2311:30 am
DUB
- ONT
1 stop19h 14m
JetBlue
Deal found 7/18![JetBlue logo]()
$896
This Icelandair deal was found by Cheapflights users on 7/21. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1110:05 am
ONT
- DUB
2 stops16h 10m
Multiple Airlines
Wed 11/1811:30 am
DUB
- ONT
2 stops19h 24m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$979
This United Airlines deal was found by Cheapflights users on 7/19. 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.
Thu 11/266:46 am
ONT
- DUB
1 stop17h 24m
United Airlines
Sun 12/69:00 am
DUB
- ONT
2 stops44h 21m
United Airlines
Deal found 7/19![United Airlines logo]()
$948
This Turkish Airlines deal was found by Cheapflights users on 7/21. 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.
Sat 10/1011:05 pm
ONT
- DUB
2 stops26h 30m
Multiple Airlines
Mon 10/195:55 am
DUB
- ONT
2 stops25h 47m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$1,045
This United Airlines deal was found by Cheapflights users on 7/19. 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 8/81:18 pm
ONT
- DUB
2 stops34h 02m
United Airlines
Wed 8/1912:30 pm
DUB
- ONT
2 stops16h 23m
United Airlines
Deal found 7/19![United Airlines logo]()
$978
This Turkish Airlines deal was found by Cheapflights users on 7/22. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1711:05 pm
ONT
- DUB
2 stops32h 55m
Multiple Airlines
Sat 10/2410:40 am
DUB
- ONT
2 stops55h 37m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$1,051
This United Airlines deal was found by Cheapflights users on 7/18. 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.
Thu 9/179:01 am
ONT
- DUB
2 stops18h 09m
United Airlines
Tue 9/229:20 am
DUB
- ONT
3 stops21h 39m
United Airlines
Deal found 7/18![United Airlines logo]()
$1,006
This Icelandair deal was found by Cheapflights users on 7/20. 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 12/288:50 am
ONT
- DUB
2 stops17h 25m
Multiple Airlines
Tue 1/511:30 am
DUB
- ONT
2 stops19h 09m
Multiple Airlines
Deal found 7/20![Multiple Airlines logo]()
$1,072
This Icelandair deal was found by Cheapflights users on 7/22. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2110:25 am
ONT
- DUB
2 stops18h 50m
Multiple Airlines
Sat 10/3111:30 am
DUB
- ONT
2 stops19h 15m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$1,122
Last-minute flights from Ontario to DublinDiscover last-minute flight deals from Ontario to Dublin. Data last updated July 22, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Dublin. Data last updated July 22, 2026 and is based on user searches.
This Ovago deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/711:59 pm
ONT
- DUB
1 stop25h 01m
JetBlue
Wed 9/1611:30 am
DUB
- ONT
1 stop16h 43m
JetBlue
Deal found 7/20![JetBlue logo]()
$867
This Priceline deal was found by Cheapflights users on 7/20. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/811:08 pm
ONT
- DUB
1 stop25h 52m
JetBlue
Thu 9/1711:30 am
DUB
- ONT
1 stop16h 43m
JetBlue
Deal found 7/20![JetBlue logo]()
$868
This Expedia deal was found by Cheapflights users on 7/20. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/1311:59 pm
ONT
- DUB
1 stop25h 01m
JetBlue
Wed 8/2611:30 am
DUB
- ONT
1 stop19h 07m
JetBlue
Deal found 7/20![JetBlue logo]()
$833
This BusinessClass deal was found by Cheapflights users on 7/20. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/1611:59 pm
ONT
- DUB
1 stop25h 01m
JetBlue
Tue 8/2511:30 am
DUB
- ONT
1 stop19h 07m
JetBlue
Deal found 7/20![JetBlue logo]()
$869
This Air Canada deal was found by Cheapflights users on 7/19. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/179:01 am
ONT
- DUB
2 stops15h 14m
Multiple Airlines
Wed 9/29:50 am
DUB
- ONT
2 stops16h 26m
Multiple Airlines
Deal found 7/19![Multiple Airlines logo]()
$866
This American Airlines deal was found by Cheapflights users on 7/20. 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 8/1712:33 pm
ONT
- DUB
1 stop13h 12m
American Airlines
Tue 9/112:40 pm
DUB
- ONT
1 stop14h 07m
American Airlines
Deal found 7/20![American Airlines logo]()
$870
This lastminute.com deal was found by Cheapflights users on 7/20. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1710:29 am
ONT
- DUB
1 stop15h 16m
Iberia
Tue 9/112:40 pm
DUB
- ONT
1 stop18h 19m
Iberia
Deal found 7/20![Iberia logo]()
$872
This United Airlines deal was found by Cheapflights users on 7/22. 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.
Wed 8/197:00 am
ONT
- DUB
1 stop18h 45m
United Airlines
Tue 8/259:50 am
DUB
- ONT
2 stops20h 45m
United Airlines
Deal found 7/22![United Airlines logo]()
$876
This BusinessClass deal was found by Cheapflights users on 7/21. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2011:59 pm
ONT
- DUB
1 stop25h 01m
JetBlue
Thu 8/2711:30 am
DUB
- ONT
1 stop19h 08m
JetBlue
Deal found 7/21![JetBlue logo]()
$875
This JetBlue deal was found by Cheapflights users on 7/21. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/2311:59 pm
ONT
- DUB
1 stop25h 01m
JetBlue
Tue 9/811:30 am
DUB
- ONT
1 stop19h 05m
JetBlue
Deal found 7/21![JetBlue logo]()
$850
One-way flights from Ontario to DublinSearch for one-way flight options from Ontario to Dublin. Find affordable one-way fares based on user searches. Data last updated July 22, 2026.
Search for one-way flight options from Ontario to Dublin. Find affordable one-way fares based on user searches. Data last updated July 22, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/297:56 pm
ONT
- DUB
3 stops42h 29m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$321
This Justfly.com deal was found by Cheapflights users on 7/20. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/2711:51 pm
ONT
- DUB
1 stop25h 09m
JetBlue
Deal found 7/20![JetBlue logo]()
$340
This Kiwi.com deal was found by Cheapflights users on 7/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/910:49 am
ONT
- DUB
3 stops46h 51m
Multiple Airlines
Deal found 7/18![Multiple Airlines logo]()
$387
This Cheapflightsfares deal was found by Cheapflights users on 7/18. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/911:59 pm
ONT
- DUB
1 stop25h 01m
JetBlue
Deal found 7/18![JetBlue logo]()
$415
This Ovago deal was found by Cheapflights users on 7/22. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/511:59 pm
ONT
- DUB
1 stop25h 01m
JetBlue
Deal found 7/22![JetBlue logo]()
$417
This Justfly.com deal was found by Cheapflights users on 7/18. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/211:59 pm
ONT
- DUB
1 stop25h 01m
JetBlue
Deal found 7/18![JetBlue logo]()
$418
This BusinessClass deal was found by Cheapflights users on 7/21. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2411:59 pm
ONT
- DUB
1 stop25h 01m
JetBlue
Deal found 7/21![JetBlue logo]()
$419
This Ovago deal was found by Cheapflights users on 7/19. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/129:10 pm
ONT
- DUB
1 stop27h 50m
JetBlue
Deal found 7/19![JetBlue logo]()
$431
This Priceline deal was found by Cheapflights users on 7/19. 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.
Mon 9/149:10 pm
ONT
- DUB
1 stop27h 50m
JetBlue
Deal found 7/19![JetBlue logo]()
$432
This KAYAK deal was found by Cheapflights users on 7/21. 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 8/2911:13 pm
ONT
- DUB
1 stop25h 47m
JetBlue
Deal found 7/21![JetBlue logo]()
$446
This Ovago deal was found by Cheapflights users on 7/21. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/3011:59 pm
ONT
- DUB
1 stop25h 01m
JetBlue
Deal found 7/21![JetBlue logo]()
$447
Find flight deals from Ontario to Dublin
Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Dublin (DUB). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 22, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $833 (Expedia) |
One-way from | $321 (Kiwi.com) |
Popular in | June |
Cheapest in | February |
Average price | $1,027 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Dublin 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 July 22, 2026.
Use the filters below to find and compare flights from Ontario to Dublin that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioDublin
ONT - DUB
ONTDUB
Ontario
Wed 9/2
5:00 am-7:30 am
2 stops18h 30m
Dublin
Fri 9/11
9:20 am-8:01 pm
2 stops42h 41m
$862
Quickest round-trip
OntarioDublin
ONT - DUB
ONTDUB
Ontario
Wed 11/11
7:00 am-7:45 am
1 stop16h 45m
Dublin
Wed 11/18
9:45 am-6:18 pm
1 stop16h 33m
$875
OntarioDublin
ONT - DUB
ONTDUB
Ontario
Sat 8/8
11:08 pm-9:00 am
1 stop25h 52m
Dublin
Sun 8/23
11:30 am-10:44 pm
1 stop19h 14m
$896
OntarioDublin
ONT - DUB
ONTDUB
Ontario
Thu 11/26
6:46 am-8:10 am
1 stop17h 24m
Dublin
Sun 12/6
9:00 am-9:21 pm
2 stops44h 21m
$948
OntarioDublin
ONT - DUB
ONTDUB
Ontario
Sat 8/8
1:18 pm-7:20 am
2 stops34h 02m
Dublin
Wed 8/19
12:30 pm-8:53 pm
2 stops16h 23m
$978
OntarioDublin
ONT - DUB
ONTDUB
Ontario
Wed 11/11
10:05 am-10:15 am
2 stops16h 10m
Dublin
Wed 11/18
11:30 am-10:54 pm
2 stops19h 24m
$979
OntarioDublin
ONT - DUB
ONTDUB
Ontario
Thu 9/17
9:01 am-11:10 am
2 stops18h 09m
Dublin
Tue 9/22
9:20 am-10:59 pm
3 stops21h 39m
$1,006
OntarioDublin
ONT - DUB
ONTDUB
Ontario
Sat 10/10
11:05 pm-9:35 am
2 stops26h 30m
Dublin
Mon 10/19
5:55 am-11:42 pm
2 stops25h 47m
$1,045
OntarioDublin
ONT - DUB
ONTDUB
Ontario
Sat 10/17
11:05 pm-4:00 pm
2 stops32h 55m
Dublin
Sat 10/24
10:40 am-10:17 am
2 stops55h 37m
$1,051
OntarioDublin
ONT - DUB
ONTDUB
Ontario
Mon 12/28
8:50 am-10:15 am
2 stops17h 25m
Dublin
Tue 1/5
11:30 am-10:39 pm
2 stops19h 09m
$1,072
Showing 1-10 of 20 resultsSorted by cheapest first
Compare providers for flights from Ontario to Dublin
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Dublin in July.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Ontario-Dublin flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Dublin flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Dublin flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Ontario-Dublin flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Dublin flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Ontario to Dublin
Have a flexible travel schedule? Discover the best time to fly to Dublin from Ontario with our price prediction graph.
ONT-DUB
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Reviews of airlines servicing Dublin
Get insights into the airlines that provide service to Dublin. 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 Dublin. Reviews last updated July 22, 2026.
Peruse reviews from past customers who have flown with American Airlines from Ontario to Dublin to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
7.9
Overall
7.1
Entertainment
6.8
Boarding
7.5
Comfort
7.2
Food
6.4
Reviews
1 / 20
2.0
MediocreJeremy,Sep 2025
SAN - PHL
Crew
7.9
Overall
7.1
Entertainment
6.8
Boarding
7.5
Comfort
7.2
Food
6.4
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 Dublin. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Dublin?
Book flights to Dublin if you plan to visit one of these locationsCastleknock
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Other flights to Dublin
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Ontario and Dublin flights
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Browse through other flights departing from Ontario. Flights are based on user searches made on Cheapflights and were last updated on July 22, 2026.
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Top airline flying from Ontario to Dublin
Discover the top airline that operate flights from Ontario to Dublin. 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 July 22, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$728 | Average$1,339 | FlexibilityNo cancel fee | On-time71% |