ONT - DUB

€274 Find Cheap Flights from Ontario to Dublin – Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest return flight
€503
Typical prices: €718-€991
KLM
Fri 9/11Sat 17/11
ONT - DUB • 1 stop
Cheapest one-way flight
€274
Typical prices: €573-€686
British Airways
Wed 14/2
ONT - DUB • 2 stops
Direct flights
Not available
There are currently no direct flights between Ontario and Dublin. You'll need to take a connecting flight to reach the destination.
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Insights
Top stopover airports
Dallas/Fort Worth (DFW)
Cheapest • Avg €973 (return)
Atlanta Hartsfield-Jackson (ATL)
Shortest trip • 14h 57m (one-way)
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Insights
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We hope you enjoy your trip to Dublin!
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Flight Deals

Cheap Flights from Ontario to Dublin (ONT-DUB)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Ontario to Dublin

Mon, 7 Dec - Tue, 15 Dec
Delta Logo
07:05 - 07:45ONT  Ontario-DUB Dublin
16h 40m1 stop Atlanta Hartsfield-Jackson
Delta Logo
09:40 - 20:59DUB  Dublin-ONT Ontario
19h 19m1 stop Atlanta Hartsfield-Jackson
€503Delta
Wed, 9 Dec - Tue, 15 Dec
Delta Logo
07:05 - 07:45ONT  Ontario-DUB Dublin
16h 40m1 stop Atlanta Hartsfield-Jackson
Delta Logo
09:40 - 20:59DUB  Dublin-ONT Ontario
19h 19m1 stop Atlanta Hartsfield-Jackson
€503Delta
Sun, 6 Dec - Fri, 18 Dec
Delta Logo
07:05 - 08:45ONT  Ontario-DUB Dublin
17h 40m2 stops Atlanta Hartsfield-Jackson New York John F Kennedy Intl
Delta Logo
10:45 - 10:00DUB  Dublin-ONT Ontario
31h 15m2 stops New York John F Kennedy Intl Atlanta Hartsfield-Jackson
€507Delta
Mon, 7 Dec - Fri, 18 Dec
Delta Logo
23:08 - 09:45ONT  Ontario-DUB Dublin
26h 37m2 stops Atlanta Hartsfield-Jackson Boston Logan Intl
Delta Logo
11:55 - 10:00DUB  Dublin-ONT Ontario
30h 05m2 stops Boston Logan Intl Atlanta Hartsfield-Jackson
€507Delta
Tue, 8 Dec - Fri, 18 Dec
Delta Logo
07:05 - 09:45ONT  Ontario-DUB Dublin
18h 40m2 stops Atlanta Hartsfield-Jackson Boston Logan Intl
Delta Logo
11:55 - 10:00DUB  Dublin-ONT Ontario
30h 05m2 stops Boston Logan Intl Atlanta Hartsfield-Jackson
€507Delta
Mon, 7 Dec - Tue, 15 Dec
Delta Logo
07:05 - 07:45ONT  Ontario-DUB Dublin
16h 40m1 stop Atlanta Hartsfield-Jackson
Delta Logo
10:45 - 23:58DUB  Dublin-ONT Ontario
21h 13m2 stops New York John F Kennedy Intl Salt Lake City
€507Delta
Mon, 7 Dec - Wed, 16 Dec
Delta Logo
23:08 - 08:45ONT  Ontario-DUB Dublin
25h 37m2 stops Atlanta Hartsfield-Jackson New York John F Kennedy Intl
Delta Logo
10:45 - 11:08DUB  Dublin-ONT Ontario
32h 23m2 stops New York John F Kennedy Intl Atlanta Hartsfield-Jackson
€507Delta
Sun, 6 Dec - Wed, 16 Dec
Delta Logo
07:05 - 08:45ONT  Ontario-DUB Dublin
17h 40m2 stops Atlanta Hartsfield-Jackson New York John F Kennedy Intl
Delta Logo
10:45 - 11:08DUB  Dublin-ONT Ontario
32h 23m2 stops New York John F Kennedy Intl Atlanta Hartsfield-Jackson
€507Delta
Wed, 9 Dec - Thu, 17 Dec
Delta Logo
07:05 - 07:45ONT  Ontario-DUB Dublin
16h 40m1 stop Atlanta Hartsfield-Jackson
Delta Logo
09:55 - 23:58DUB  Dublin-ONT Ontario
22h 03m2 stops Minneapolis St Paul Salt Lake City
€507Delta
Wed, 9 Dec - Wed, 16 Dec
Delta Logo
07:05 - 08:45ONT  Ontario-DUB Dublin
17h 40m2 stops Atlanta Hartsfield-Jackson New York John F Kennedy Intl
Delta Logo
10:45 - 11:08DUB  Dublin-ONT Ontario
32h 23m2 stops New York John F Kennedy Intl Atlanta Hartsfield-Jackson
€507Delta
Booking Insights

Price, demand, and travel trends for Ontario to Dublin flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights from Ontario to Dublin with more confidence.

How much is a return flight from Ontario to Dublin?

Return flights from Ontario to Dublin start at €503. Prices are below average for this route right now, with typical return fares ranging from €718 to €991. The lowest price found in the past 5 days was €503 on KLM.

Find deals

Key details for Ontario to Dublin flights

Cheapest flight

€274
Flights from Ontario to Dublin

When to book flights from Ontario to Dublin

Are your dates flexible? Find out the best times to travel from Ontario to Dublin based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price

Your Ontario to Dublin flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines, and booking questions.

  • Which airports can I use when flying from Ontario to Dublin?

    Flights from Ontario to Dublin usually depart from Ontario (ONT) and arrive at Dublin (DUB).

  • Which airports do connecting flights from Ontario to Dublin pass through?

    One-stop flights from Ontario to Dublin most commonly connect through:

    • Dallas/Fort Worth (DFW) – 56% of one-stop connections
    • New York John F Kennedy Intl (JFK) – 15% of one-stop connections
    • Chicago O'Hare Intl (ORD) – 15% of one-stop connections
    • Atlanta Hartsfield-Jackson (ATL) – 12% of one-stop connections

    Dallas/Fort Worth (DFW) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from Ontario to Dublin?

    Yes. Being flexible with your travel dates can save you up to 54% on the Ontario to Dublin route. Tuesday is the cheapest departure day at €485 return on average, while Friday is the most expensive at €1,037, a difference of €551. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What popular places can I visit in Dublin?

    Some of the most popular sights in Dublin are Dublin City Centre, Bord Gáis Energy Theatre, and 3Olympia Theatre. These are among the most viewed places in Dublin on KAYAK.

  • How long is a flight from Ontario to Dublin?

    A direct flight from Ontario to Dublin takes 0h 00m, covering 13,293 km.

  • Do I need a passport to fly from Ontario to Dublin?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How are flight prices from Ontario to Dublin looking right now?

    One-way fares from Ontario to Dublin are currently lower than usual. Average one-way flight prices are about €309, which is 47% below the typical average for this route.

  • How much time can I save by choosing a different stopover airport from Ontario to Dublin?

    Flying via Dallas/Fort Worth (DFW) gives the shortest average 1-stop total travel time of 14h 01m, compared to 14h 57m via Atlanta Hartsfield-Jackson (ATL) and 16h 03m via San Francisco (SFO).

  • What is the time difference between Ontario and Dublin?

    Dublin is 8 hours ahead of Ontario (Irish Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

  • Which car hire options are available at Dublin Airport (DUB)?

    Dublin Airport (DUB) hosts 5 major car hire companies, with daily rates starting from around €3 for economy cars. Top options include:
    · Budget
    · Sixt
    · Easirent
    · Europcar
    · Thrifty

  • How much should I expect to pay for a Ontario to Dublin flight?

    Return flights from Ontario to Dublin range from €718 to €991, with an average of €833 over the past 12 months. Anything below €718 counts as a good deal.

Your guide to booking Ontario to Dublin flights

Get tips on when to book, when to fly, and what to know before your trip.

More options for your flight from Ontario to Dublin

Complete your trip to Dublin with a hotel stay or car hire

Car hire in Dublin
Hotels in Dublin
Holidays in Dublin