$322+ 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 12/1. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — DUB
Nov 27 — Dec 41
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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Best
Last-minute
One-way
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 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 October 28, 2026.
This Mytrip deal was found by Cheapflights users on 10/27. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/86:00 am -
2 stops20h 15m
Tue 12/1511:30 am -
2 stops18h 47m
Deal found 10/27![Multiple Airlines logo]()
$486
This Mytrip deal was found by Cheapflights users on 10/25. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/26:00 am -
2 stops17h 10m
Mon 12/79:00 am -
2 stops23h 20m
Deal found 10/25![Multiple Airlines logo]()
$576
This Mytrip deal was found by Cheapflights users on 10/25. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/97:26 pm -
3 stops30h 49m
Mon 12/1411:30 am -
2 stops20h 50m
Deal found 10/25![Multiple Airlines logo]()
$584
This Mytrip deal was found by Cheapflights users on 10/24. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/16:00 am -
2 stops20h 15m
Wed 12/911:30 am -
2 stops18h 47m
Deal found 10/24![Multiple Airlines logo]()
$596
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 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 October 28, 2026.
This United Airlines deal was found by Cheapflights users on 10/27. 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.
Sun 4/185:00 am -
2 stops18h 30m
Wed 4/219:50 am -
2 stops44h 41m
Deal found 10/27![United Airlines logo]()
$704
This KLM deal was found by Cheapflights users on 10/23. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/177:05 am -
1 stop16h 40m
Wed 11/255:45 am -
2 stops23h 09m
Deal found 10/23![KLM logo]()
$856
This Icelandair deal was found by Cheapflights users on 10/23. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/410:05 am -
2 stops16h 10m
Wed 12/911:30 am -
2 stops20h 24m
Deal found 10/23![Multiple Airlines logo]()
$1,030
This United Airlines deal was found by Cheapflights users on 10/27. 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.
Sun 4/117:00 am -
1 stop18h 45m
Fri 4/1611:35 am -
1 stop18h 56m
Deal found 10/27![United Airlines logo]()
$726
This KLM deal was found by Cheapflights users on 10/26. 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.
Tue 11/107:05 am -
1 stop16h 40m
Tue 11/179:40 am -
1 stop19h 14m
Deal found 10/26![KLM logo]()
$860
This United Airlines deal was found by Cheapflights users on 10/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/27:00 am -
1 stop17h 10m
Mon 12/79:00 am -
2 stops38h 35m
Deal found 10/25![United Airlines logo]()
$808
This United Airlines deal was found by Cheapflights users on 10/27. 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 12/107:00 am -
1 stop17h 10m
Thu 12/1710:40 am -
1 stop19h 51m
Deal found 10/27![United Airlines logo]()
$834
This KLM deal was found by Cheapflights users on 10/27. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/47:05 am -
1 stop16h 40m
Thu 12/179:55 am -
1 stop16h 43m
Deal found 10/27![KLM logo]()
$926
This United Airlines deal was found by Cheapflights users on 10/27. 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.
Fri 12/116:00 am -
2 stops18h 10m
Fri 12/1810:40 am -
1 stop19h 56m
Deal found 10/27![United Airlines logo]()
$839
This United Airlines deal was found by Cheapflights users on 10/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/206:00 am -
2 stops18h 30m
Sun 3/288:50 am -
2 stops20h 31m
Deal found 10/25![United Airlines logo]()
$878
Last-minute flights from Ontario to DublinDiscover last-minute flight deals from Ontario to Dublin. Data last updated October 28, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Dublin. Data last updated October 28, 2026 and is based on user searches.
This KLM deal was found by Cheapflights users on 10/24. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/27:07 am -
1 stop16h 38m
Wed 11/189:40 am -
1 stop19h 14m
Deal found 10/24![KLM logo]()
$850
This KLM deal was found by Cheapflights users on 10/26. 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.
Tue 11/107:05 am -
1 stop16h 40m
Tue 11/179:40 am -
1 stop19h 14m
Deal found 10/26![KLM logo]()
$860
This Mytrip deal was found by Cheapflights users on 10/26. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/158:03 pm -
3 stops30h 12m
Wed 11/2511:30 am -
2 stops20h 44m
Deal found 10/26![Multiple Airlines logo]()
$745
This Mytrip deal was found by Cheapflights users on 10/26. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/166:30 am -
2 stops19h 45m
Wed 11/2511:30 am -
2 stops20h 44m
Deal found 10/26![Multiple Airlines logo]()
$658
This United Airlines deal was found by Cheapflights users on 10/23. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/177:00 am -
1 stop17h 10m
Thu 11/269:00 am -
2 stops45h 48m
Deal found 10/23![United Airlines logo]()
$844
This FlightHub deal was found by Cheapflights users on 10/23. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1712:42 pm -
2 stops20h 13m
Tue 11/2411:00 am -
2 stops18h 52m
Deal found 10/23![British Airways logo]()
$854
This KLM deal was found by Cheapflights users on 10/23. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/177:05 am -
1 stop16h 40m
Tue 11/245:45 am -
2 stops23h 09m
Deal found 10/23![KLM logo]()
$856
This Mytrip deal was found by Cheapflights users on 10/25. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/276:45 am -
2 stops19h 30m
Wed 12/211:30 am -
2 stops18h 50m
Deal found 10/25![Multiple Airlines logo]()
$652
This Mytrip deal was found by Cheapflights users on 10/25. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/306:45 am -
2 stops19h 30m
Wed 12/1611:30 am -
3 stops28h 35m
Deal found 10/25![Multiple Airlines logo]()
$763
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 28, 2026.
Search for one-way flight options from Ontario to Dublin. Find affordable one-way fares based on user searches. Data last updated October 28, 2026.
This Mytrip deal was found by Cheapflights users on 10/25. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/16:00 am -
2 stops20h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/25![Multiple Airlines logo]()
$322
This KLM deal was found by Cheapflights users on 10/23. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/147:00 am -
1 stop16h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![KLM logo]()
$329
This Justfly.com deal was found by Cheapflights users on 10/23. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/45:00 am -
2 stops43h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Air Canada logo]()
$331
This United Airlines deal was found by Cheapflights users on 10/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/166:00 am -
2 stops17h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/28![United Airlines logo]()
$334
This Iberia deal was found by Cheapflights users on 10/23. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/47:00 am -
1 stop18h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Iberia logo]()
$335
This Delta deal was found by Cheapflights users on 10/23. 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.
Mon 2/156:00 am -
2 stops22h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Delta logo]()
$342
This Mytrip deal was found by Cheapflights users on 10/27. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/912:01 pm -
2 stops27h 04m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Multiple Airlines logo]()
$343
This Air Canada deal was found by Cheapflights users on 10/27. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/293:59 pm -
2 stops55h 11m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Air Canada logo]()
$353
This Booking.com deal was found by Cheapflights users on 10/24. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/126:30 am -
2 stops19h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![Multiple Airlines logo]()
$361
This KLM deal was found by Cheapflights users on 10/23. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/187:00 am -
1 stop16h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![KLM logo]()
$379
This United Airlines deal was found by Cheapflights users on 10/27. 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 2/46:00 am -
2 stops17h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![United Airlines logo]()
$384
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 28, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $486 (Mytrip) |
One-way from | $322 (Mytrip) |
Popular in | June |
Cheapest in | February |
Average price | $888 |
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 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
OntarioDublin
ONT Ontario - DUB Dublin
ONTDUB
Ontario
Sun 1/31
7:00 am-8:10 am
1 stop17h 10m
Dublin
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$334
OntarioDublin
ONT Ontario - DUB Dublin
ONTDUB
Ontario
Tue 2/16
7:00 am-7:45 am
1 stop16h 45m
Dublin
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$334
OntarioDublin
ONT Ontario - DUB Dublin
ONTDUB
Ontario
Tue 2/16
6:00 am-7:30 am
2 stops17h 30m
Dublin
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$334
OntarioDublin
ONT Ontario - DUB Dublin
ONTDUB
Ontario
Mon 2/15
6:00 am-12:40 pm
2 stops22h 40m
Dublin
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$342
OntarioDublin
ONT Ontario - DUB Dublin
ONTDUB
Ontario
Fri 1/29
3:59 pm-7:10 am
2 stops55h 11m
Dublin
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$353
OntarioDublin
ONT Ontario - DUB Dublin
ONTDUB
Ontario
Fri 1/29
7:00 am-8:10 am
1 stop17h 10m
Dublin
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$384
OntarioDublin
ONT Ontario - DUB Dublin
ONTDUB
Ontario
Thu 2/4
7:00 am-8:10 am
1 stop17h 10m
Dublin
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$384
Quickest round-trip
OntarioDublin
ONT Ontario - DUB Dublin
ONTDUB
Ontario
Tue 11/24
7:05 am-7:45 am
1 stop16h 40m
Dublin
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$466
OntarioDublin
ONT Ontario - DUB Dublin
ONTDUB
Ontario
Sun 11/29
7:05 am-7:45 am
1 stop16h 40m
Dublin
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$466
OntarioDublin
ONT Ontario - DUB Dublin
ONTDUB
Ontario
Mon 11/2
6:00 am-9:55 am
2 stops19h 55m
Dublin
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$471
Showing 1-10 of 22 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 Accuracy2 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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