$326+ Cheap flights from Ontario (ONT) to Dublin (DUB)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/15. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — DUB
Nov 18 — Nov 251
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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
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 Dublin
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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 October 19, 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 October 19, 2026.
This Mytrip deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/236:45 am -
2 stops19h 30m
Tue 12/811:30 am -
2 stops18h 47m
Deal found 10/16![Multiple Airlines logo]()
$608
This Mytrip deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/106:30 am -
2 stops19h 45m
Tue 11/1711:30 am -
2 stops20h 21m
Deal found 10/16![Multiple Airlines logo]()
$630
This Mytrip deal was found by Cheapflights users on 10/18. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/17:06 pm -
3 stops31h 09m
Tue 12/811:30 am -
2 stops18h 47m
Deal found 10/18![Multiple Airlines logo]()
$666
This Mytrip deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/27:06 pm -
3 stops31h 09m
Wed 12/911:30 am -
2 stops18h 47m
Deal found 10/15![Multiple Airlines logo]()
$667
This Mytrip deal was found by Cheapflights users on 10/17. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/238:31 pm -
3 stops29h 44m
Wed 12/911:30 am -
2 stops18h 47m
Deal found 10/17![Multiple Airlines logo]()
$693
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 October 19, 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 October 19, 2026.
This United Airlines deal was found by Cheapflights users on 10/18. 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.
Mon 1/186:00 am -
2 stops18h 10m
Sun 1/249:00 am -
2 stops21h 15m
Deal found 10/18![United Airlines logo]()
$763
This Delta deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” 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 11/296:00 am -
2 stops17h 55m
Sun 12/65:45 am -
2 stops20h 53m
Deal found 10/15![Delta logo]()
$825
This KLM deal was found by Cheapflights users on 10/19. 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.
Sun 4/1112:00 pm -
1 stop12h 45m
Mon 4/2611:00 am -
1 stop15h 22m
Deal found 10/19![Multiple Airlines logo]()
$963
This KLM deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” 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 11/87:07 am -
1 stop16h 38m
Wed 11/119:40 am -
1 stop19h 14m
Deal found 10/16![KLM logo]()
$980
This United Airlines deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” 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 2/216:30 am -
1 stop17h 40m
Sun 2/289:30 am -
2 stops20h 09m
Deal found 10/16![United Airlines logo]()
$766
This United Airlines deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” 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 11/237:00 am -
1 stop17h 10m
Tue 12/810:40 am -
1 stop16h 04m
Deal found 10/16![United Airlines logo]()
$766
This Delta deal was found by Cheapflights users on 10/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/3012:16 pm -
1 stop12h 29m
Thu 11/59:55 am -
1 stop17h 35m
Deal found 10/19![Delta logo]()
$910
This United Airlines deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” 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 4/116:00 am -
2 stops17h 30m
Sun 4/188:50 am -
2 stops20h 31m
Deal found 10/15![United Airlines logo]()
$770
This Icelandair deal was found by Cheapflights users on 10/17. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/127:00 am -
2 stops19h 15m
Tue 1/1911:30 am -
2 stops18h 15m
Deal found 10/17![Multiple Airlines logo]()
$980
This Delta deal was found by Cheapflights users on 10/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/3012:16 pm -
1 stop12h 29m
Fri 11/69:40 am -
1 stop17h 50m
Deal found 10/19![Delta logo]()
$910
This Delta deal was found by Cheapflights users on 10/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/3012:16 pm -
1 stop12h 29m
Tue 11/109:40 am -
1 stop19h 14m
Deal found 10/19![Delta logo]()
$910
Last-minute flights from Ontario to DublinDiscover last-minute flight deals from Ontario to Dublin. Data last updated October 19, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Dublin. Data last updated October 19, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/106:30 am -
2 stops19h 45m
Tue 11/1711:30 am -
2 stops20h 21m
Deal found 10/16![Multiple Airlines logo]()
$630
This Mytrip deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/236:45 am -
2 stops19h 30m
Tue 12/811:30 am -
2 stops18h 47m
Deal found 10/16![Multiple Airlines logo]()
$608
This Mytrip deal was found by Cheapflights users on 10/17. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/238:31 pm -
3 stops29h 44m
Wed 12/911:30 am -
2 stops18h 47m
Deal found 10/17![Multiple Airlines logo]()
$693
This American Airlines deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” 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 11/232:09 pm -
2 stops17h 16m
Tue 12/811:30 am -
2 stops19h 28m
Deal found 10/16![American Airlines logo]()
$758
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 October 19, 2026.
Search for one-way flight options from Ontario to Dublin. Find affordable one-way fares based on user searches. Data last updated October 19, 2026.
This Air France deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” 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 2/157:00 am -
1 stop16h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/16![Air France logo]()
$326
This United Airlines deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” 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 1/266:00 am -
2 stops17h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/16![United Airlines logo]()
$329
This United Airlines deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” 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 2/156:35 pm -
2 stops28h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/16![United Airlines logo]()
$335
This Air Canada deal was found by Cheapflights users on 10/17. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/155:00 am -
2 stops42h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/17![Air Canada logo]()
$337
This Kissandfly.com deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/57:00 am -
1 stop17h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/16![Lufthansa logo]()
$369
This United Airlines deal was found by Cheapflights users on 10/18. 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 4/156:00 am -
2 stops21h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/18![United Airlines logo]()
$379
This Air Canada deal was found by Cheapflights users on 10/17. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/145:00 am -
2 stops42h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/17![Air Canada logo]()
$390
This Mytrip deal was found by Cheapflights users on 10/18. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/18:00 am -
3 stops18h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/18![Multiple Airlines logo]()
$409
This Mytrip deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/1512:01 pm -
1 stop15h 29m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/15![Multiple Airlines logo]()
$422
This Mytrip deal was found by Cheapflights users on 10/18. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/88:44 am -
3 stops17h 31m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/18![Multiple Airlines logo]()
$431
This Mytrip deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/128:44 am -
2 stops18h 46m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/16![Multiple Airlines logo]()
$436
This American Airlines deal was found by Cheapflights users on 10/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/1612:53 am -
1 stop21h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/17![American Airlines logo]()
$449
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 October 19, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $608 (Mytrip) |
One-way from | $326 (Air France) |
Popular in | June |
Cheapest in | February |
Average price | $873 |
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 7,457,451 searches. Data last updated October 19, 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 Ontario - DUB Dublin
ONTDUB
Ontario
Tue 1/26
6:00 am-7:30 am
2 stops17h 30m
Dublin
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$329
OntarioDublin
ONT Ontario - DUB Dublin
ONTDUB
Ontario
Wed 4/7
6:00 am-7:30 am
2 stops17h 30m
Dublin
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$329
OntarioDublin
ONT Ontario - DUB Dublin
ONTDUB
Ontario
Thu 4/15
6:00 am-11:10 am
2 stops21h 10m
Dublin
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$379
OntarioDublin
ONT Ontario - DUB Dublin
ONTDUB
Ontario
Wed 11/4
6:00 am-10:20 am
2 stops20h 20m
Dublin
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$466
Quickest round-trip
OntarioDublin
ONT Ontario - DUB Dublin
ONTDUB
Ontario
Sun 12/13
7:00 am-8:10 am
1 stop17h 10m
Dublin
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$466
OntarioDublin
ONT Ontario - DUB Dublin
ONTDUB
Ontario
Mon 1/18
6:00 am-8:10 am
2 stops18h 10m
Dublin
Sun 1/24
9:00 am-10:15 pm
2 stops21h 15m
$763
OntarioDublin
ONT Ontario - DUB Dublin
ONTDUB
Ontario
Sun 2/21
6:30 am-8:10 am
1 stop17h 40m
Dublin
Sun 2/28
9:30 am-9:39 pm
2 stops20h 09m
$766
OntarioDublin
ONT Ontario - DUB Dublin
ONTDUB
Ontario
Mon 11/23
7:00 am-8:10 am
1 stop17h 10m
Dublin
Tue 12/8
10:40 am-6:44 pm
1 stop16h 04m
$766
OntarioDublin
ONT Ontario - DUB Dublin
ONTDUB
Ontario
Sun 4/11
6:00 am-7:30 am
2 stops17h 30m
Dublin
Sun 4/18
8:50 am-9:21 pm
2 stops20h 31m
$770
OntarioDublin
ONT Ontario - DUB Dublin
ONTDUB
Ontario
Sun 11/29
6:00 am-7:55 am
2 stops17h 55m
Dublin
Sun 12/6
5:45 am-6:38 pm
2 stops20h 53m
$825
Showing 1-10 of 16 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 October.
| 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 | |
| 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.
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
Bray
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