$317+ 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 7/20. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — DUB
Jul 28 — Aug 41
Round-trip
1 adult, Economy
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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 June 28, 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 June 28, 2026.
This Delta deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/57:00 am
ONT
- DUB
1 stop16h 45m
Delta
Wed 11/115:45 am
DUB
- ONT
2 stops18h 27m
Delta
Deal found 6/24![Delta logo]()
$703
This Air France deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” 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.
Wed 10/2812:00 pm
ONT
- DUB
1 stop12h 45m
Air France
Tue 11/39:40 am
DUB
- ONT
1 stop16h 38m
Air France
Deal found 6/25![Air France logo]()
$706
This Air France deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” 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.
Thu 11/57:00 am
ONT
- DUB
1 stop16h 45m
Multiple Airlines
Fri 11/139:45 am
DUB
- ONT
1 stop16h 33m
Multiple Airlines
Deal found 6/24![Multiple Airlines logo]()
$707
This Delta deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/187:05 am
ONT
- DUB
1 stop17h 40m
Delta
Tue 9/15:55 am
DUB
- ONT
2 stops21h 58m
Delta
Deal found 6/25![Delta logo]()
$708
This KLM deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” 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 8/59:43 am
ONT
- DUB
2 stops14h 12m
KLM
Wed 8/1911:00 am
DUB
- ONT
1 stop16h 53m
KLM
Deal found 6/26![KLM logo]()
$715
This United Airlines deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” 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 8/187:00 am
ONT
- DUB
1 stop18h 45m
United Airlines
Tue 9/19:50 am
DUB
- ONT
2 stops44h 45m
United Airlines
Deal found 6/27![United Airlines logo]()
$727
This Delta deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” 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 8/210:00 pm
ONT
- DUB
2 stops28h 45m
Delta
Tue 8/1811:00 am
DUB
- ONT
1 stop16h 53m
Delta
Deal found 6/26![Delta logo]()
$733
This Trip.com deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” 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.
Sun 8/97:05 am
ONT
- DUB
1 stop17h 40m
KLM
Tue 8/2511:00 am
DUB
- ONT
1 stop16h 53m
KLM
Deal found 6/25![KLM logo]()
$736
This Delta deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” 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 9/127:05 am
ONT
- DUB
1 stop17h 40m
Delta
Tue 9/291:25 pm
DUB
- ONT
2 stops35h 55m
Delta
Deal found 6/25![Delta logo]()
$737
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 June 28, 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 June 28, 2026.
This KLM deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” 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 10/1112:00 pm
ONT
- DUB
1 stop12h 45m
Multiple Airlines
Sat 10/1711:00 am
DUB
- ONT
1 stop15h 18m
Multiple Airlines
Deal found 6/25![Multiple Airlines logo]()
$741
This Delta deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/1611:48 am
ONT
- DUB
1 stop12h 57m
Delta
Thu 7/2311:00 am
DUB
- ONT
1 stop18h 50m
Delta
Deal found 6/26![Delta logo]()
$771
This United Airlines deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” 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 8/66:10 am
ONT
- DUB
1 stop19h 35m
United Airlines
Mon 8/1011:35 am
DUB
- ONT
1 stop19h 16m
United Airlines
Deal found 6/27![United Airlines logo]()
$839
This British Airways deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” 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.
Thu 9/242:22 pm
ONT
- DUB
2 stops17h 23m
British Airways
Wed 9/3011:10 am
DUB
- ONT
2 stops19h 27m
British Airways
Deal found 6/26![British Airways logo]()
$1,081
This United Airlines deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” 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 11/15:00 am
ONT
- DUB
3 stops21h 20m
United Airlines
Sun 11/89:00 am
DUB
- ONT
2 stops17h 29m
United Airlines
Deal found 6/24![United Airlines logo]()
$926
This Delta deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” 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 7/3111:48 am
ONT
- DUB
1 stop12h 57m
Delta
Fri 8/711:00 am
DUB
- ONT
1 stop15h 30m
Delta
Deal found 6/23![Delta logo]()
$999
This Icelandair deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” 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 9/3010:45 am
ONT
- DUB
2 stops18h 30m
Multiple Airlines
Wed 10/1412:15 pm
DUB
- ONT
2 stops19h 38m
Multiple Airlines
Deal found 6/25![Multiple Airlines logo]()
$1,017
This United Airlines deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” 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
ONT
- DUB
1 stop18h 45m
United Airlines
Sun 9/279:20 am
DUB
- ONT
2 stops19h 11m
United Airlines
Deal found 6/26![United Airlines logo]()
$1,015
This British Airways deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” 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.
Thu 9/248:25 am
ONT
- DUB
2 stops16h 35m
British Airways
Mon 10/57:00 pm
DUB
- ONT
2 stops31h 57m
British Airways
Deal found 6/27![British Airways logo]()
$1,141
This KLM deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” 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 7/2611:48 am
ONT
- DUB
1 stop12h 57m
Multiple Airlines
Mon 8/311:00 am
DUB
- ONT
1 stop15h 30m
Multiple Airlines
Deal found 6/26![Multiple Airlines logo]()
$1,223
Last-minute flights from Ontario to DublinDiscover last-minute flight deals from Ontario to Dublin. Data last updated June 28, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Dublin. Data last updated June 28, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” 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 7/1211:48 am
ONT
- DUB
1 stop12h 57m
Delta
Wed 7/2911:00 am
DUB
- ONT
1 stop15h 30m
Delta
Deal found 6/25![Delta logo]()
$771
This Delta deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” 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 7/1510:00 pm
ONT
- DUB
1 stop26h 45m
Delta
Thu 7/238:55 am
DUB
- ONT
2 stops20h 55m
Delta
Deal found 6/26![Delta logo]()
$773
This Delta deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/1611:48 am
ONT
- DUB
1 stop12h 57m
Delta
Thu 7/2311:10 am
DUB
- ONT
2 stops19h 42m
Delta
Deal found 6/26![Delta logo]()
$767
This KLM deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” 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.
Thu 7/167:05 am
ONT
- DUB
1 stop17h 40m
KLM
Fri 7/2412:00 pm
DUB
- ONT
2 stops17h 50m
KLM
Deal found 6/26![KLM logo]()
$775
This KAYAK deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” 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 7/2411:51 pm
ONT
- DUB
1 stop25h 09m
JetBlue
Thu 8/611:30 am
DUB
- ONT
1 stop19h 08m
JetBlue
Deal found 6/27![JetBlue logo]()
$884
This Ovago deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” 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 7/2611:58 pm
ONT
- DUB
1 stop25h 02m
JetBlue
Thu 8/611:30 am
DUB
- ONT
1 stop19h 08m
JetBlue
Deal found 6/26![JetBlue logo]()
$854
This American Airlines deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” 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 7/2712:35 pm
ONT
- DUB
1 stop13h 10m
American Airlines
Wed 8/1212:40 pm
DUB
- ONT
1 stop14h 07m
American Airlines
Deal found 6/27![American Airlines logo]()
$832
This United Airlines deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” 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 7/306:10 am
ONT
- DUB
1 stop19h 35m
United Airlines
Thu 8/69:50 am
DUB
- ONT
2 stops21h 01m
United Airlines
Deal found 6/26![United Airlines logo]()
$831
This Justfly.com deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” 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 7/3011:58 pm
ONT
- DUB
1 stop25h 02m
JetBlue
Thu 8/611:30 am
DUB
- ONT
1 stop19h 08m
JetBlue
Deal found 6/27![JetBlue logo]()
$855
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 June 28, 2026.
Search for one-way flight options from Ontario to Dublin. Find affordable one-way fares based on user searches. Data last updated June 28, 2026.
This Trip.com deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” 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.
Mon 7/206:00 am
ONT
- DUB
2 stops23h 15m
Multiple Airlines
Deal found 6/28![Multiple Airlines logo]()
$317
This KLM deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” 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.
Sat 8/227:05 am
ONT
- DUB
1 stop17h 40m
KLM
Deal found 6/26![KLM logo]()
$326
This Delta deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” 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 8/237:05 am
ONT
- DUB
1 stop17h 40m
Delta
Deal found 6/25![Delta logo]()
$329
This Kiwi.com deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” 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.
Fri 7/174:49 pm
ONT
- DUB
2 stops34h 16m
Multiple Airlines
Deal found 6/25![Multiple Airlines logo]()
$330
This Trip.com deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” 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.
Sun 7/1910:49 am
ONT
- DUB
2 stops18h 26m
Multiple Airlines
Deal found 6/26![Multiple Airlines logo]()
$333
This Delta deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” 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 8/2410:00 pm
ONT
- DUB
1 stop26h 45m
Delta
Deal found 6/25![Delta logo]()
$340
This Kiwi.com deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” 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 9/122:55 pm
ONT
- DUB
3 stops48h 40m
Multiple Airlines
Deal found 6/23![Multiple Airlines logo]()
$352
This Kiwi.com deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” 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.
Wed 9/232:55 pm
ONT
- DUB
3 stops46h 15m
Multiple Airlines
Deal found 6/23![Multiple Airlines logo]()
$353
This Air France deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” 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.
Sun 7/1911:48 am
ONT
- DUB
1 stop12h 57m
Air France
Deal found 6/25![Air France logo]()
$359
This Cheapflightsfares deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” 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.
Fri 7/1711:51 pm
ONT
- DUB
1 stop25h 09m
JetBlue
Deal found 6/27![JetBlue logo]()
$362
This Kiwi.com deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” 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.
Mon 9/213:14 pm
ONT
- DUB
2 stops24h 06m
Multiple Airlines
Deal found 6/23![Multiple Airlines logo]()
$363
This Kiwi.com deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” 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.
Wed 9/166:00 am
ONT
- DUB
3 stops41h 40m
Multiple Airlines
Deal found 6/23![Multiple Airlines logo]()
$365
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 June 28, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $703 (Delta) |
One-way from | $317 (Trip.com) |
Popular in | June |
Cheapest in | February |
Average price | $1,227 |
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 June 28, 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
Quickest round-trip
OntarioDublin
ONT - DUB
ONTDUB
Ontario
Sun 10/11
12:00 pm-8:45 am
1 stop12h 45m
Dublin
Sat 10/17
11:00 am-6:18 pm
1 stop15h 18m
$741
OntarioDublin
ONT - DUB
ONTDUB
Ontario
Thu 7/16
11:48 am-8:45 am
1 stop12h 57m
Dublin
Thu 7/23
11:00 am-9:50 pm
1 stop18h 50m
$771
OntarioDublin
ONT - DUB
ONTDUB
Ontario
Thu 8/6
6:10 am-9:45 am
1 stop19h 35m
Dublin
Mon 8/10
11:35 am-10:51 pm
1 stop19h 16m
$839
OntarioDublin
ONT - DUB
ONTDUB
Ontario
Sun 11/1
5:00 am-10:20 am
3 stops21h 20m
Dublin
Sun 11/8
9:00 am-6:29 pm
2 stops17h 29m
$926
OntarioDublin
ONT - DUB
ONTDUB
Ontario
Fri 7/31
11:48 am-8:45 am
1 stop12h 57m
Dublin
Fri 8/7
11:00 am-6:30 pm
1 stop15h 30m
$999
OntarioDublin
ONT - DUB
ONTDUB
Ontario
Sun 9/20
7:00 am-9:45 am
1 stop18h 45m
Dublin
Sun 9/27
9:20 am-8:31 pm
2 stops19h 11m
$1,015
OntarioDublin
ONT - DUB
ONTDUB
Ontario
Wed 9/30
10:45 am-1:15 pm
2 stops18h 30m
Dublin
Wed 10/14
12:15 pm-11:53 pm
2 stops19h 38m
$1,017
OntarioDublin
ONT - DUB
ONTDUB
Ontario
Thu 9/24
2:22 pm-3:45 pm
2 stops17h 23m
Dublin
Wed 9/30
11:10 am-10:37 pm
2 stops19h 27m
$1,081
OntarioDublin
ONT - DUB
ONTDUB
Ontario
Thu 9/24
8:25 am-9:00 am
2 stops16h 35m
Dublin
Mon 10/5
7:00 pm-6:57 pm
2 stops31h 57m
$1,141
OntarioDublin
ONT - DUB
ONTDUB
Ontario
Sun 7/26
11:48 am-8:45 am
1 stop12h 57m
Dublin
Mon 8/3
11:00 am-6:30 pm
1 stop15h 30m
$1,223
Showing 1-10 of 21 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 June.
| 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 June 28, 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.
Boarding
7.5
Crew
7.9
Entertainment
6.8
Overall
7.1
Food
6.4
Comfort
7.2
Reviews
1 / 20
2.0
MediocreJeremy,Sep 2025
SAN - PHL
Boarding
7.5
Crew
7.9
Entertainment
6.8
Overall
7.1
Food
6.4
Comfort
7.2
Reviews
1 / 20
2.0
MediocreJeremy,Sep 2025
SAN - PHL
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Top airline flying from Ontario to Dublin
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| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$728 | Average$1,339 | FlexibilityNo cancel fee | On-time71% |