ONT - DUB

€300 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
€451
Typical prices: €889-€1,081
Multiple Airlines
Mon 10/12Sat 15/12
ONT - DUB • 2 stops
Cheapest one-way flight
€300
Typical prices: €560-€694
United Airlines
Sat 3/3
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.
Insights
Insights
When to travel
September
Cheapest • 35% price drop
April
Most popular
Good to know
+1
Good to know
+1
Top stopover airports
Chicago O'Hare Intl (ORD)
Cheapest • Avg €1,018 (return)
Dallas/Fort Worth (DFW)
Shortest trip • 14h 16m (one-way)
Insights
Insights
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We hope you enjoy your trip to Dublin!
Flight Deals
Booking Insights
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

Thu, 10 Dec - Tue, 15 Dec
Multiple Airlines Logo
06:00 - 10:15ONT  Ontario-DUB Dublin
20h 15m2 stops Denver Intl Reykjavik Keflavik Intl
Multiple Airlines Logo
11:30 - 22:17DUB  Dublin-ONT Ontario
18h 47m2 stops Reykjavik Keflavik Intl Denver Intl
€451Multiple Airlines
3+ days ago
Thu, 10 Dec - Tue, 15 Dec
Multiple Airlines Logo
06:00 - 10:15ONT  Ontario-DUB Dublin
20h 15m2 stops Denver Intl Reykjavik Keflavik Intl
Multiple Airlines Logo
11:30 - 07:44DUB  Dublin-ONT Ontario
28h 14m3 stops Reykjavik Keflavik Intl Denver Intl Dallas/Fort Worth
€498Multiple Airlines
3+ days ago
Tue, 1 Dec - Tue, 8 Dec
Multiple Airlines Logo
19:06 - 10:15ONT  Ontario-DUB Dublin
31h 09m3 stops San Francisco Denver Intl Reykjavik Keflavik Intl
Multiple Airlines Logo
11:30 - 22:17DUB  Dublin-ONT Ontario
18h 47m2 stops Reykjavik Keflavik Intl Denver Intl
€519Multiple Airlines
3+ days ago
Thu, 10 Dec - Tue, 15 Dec
Multiple Airlines Logo
08:44 - 10:15ONT  Ontario-DUB Dublin
17h 31m3 stops Las Vegas Harry Reid Intl Denver Intl Reykjavik Keflavik Intl
Multiple Airlines Logo
11:30 - 11:51DUB  Dublin-ONT Ontario
32h 21m3 stops Reykjavik Keflavik Intl Denver Intl Las Vegas Harry Reid Intl
€554Multiple Airlines
3+ days ago
Tue, 1 Dec - Tue, 8 Dec
Multiple Airlines Logo
19:06 - 10:15ONT  Ontario-DUB Dublin
31h 09m3 stops San Francisco Denver Intl Reykjavik Keflavik Intl
Multiple Airlines Logo
11:30 - 07:44DUB  Dublin-ONT Ontario
28h 14m3 stops Reykjavik Keflavik Intl Denver Intl Dallas/Fort Worth
€567Multiple Airlines
3+ days ago
Wed, 9 Dec - Sun, 13 Dec
Multiple Airlines Logo
06:00 - 07:10ONT  Ontario-DUB Dublin
17h 10m2 stops Denver Intl Toronto Pearson Intl
Multiple Airlines Logo
09:00 - 11:51DUB  Dublin-ONT Ontario
34h 51m3 stops Toronto Pearson Intl Denver Intl Las Vegas Harry Reid Intl
€576Multiple Airlines
3+ days ago
Wed, 9 Dec - Sun, 13 Dec
Multiple Airlines Logo
06:00 - 07:10ONT  Ontario-DUB Dublin
17h 10m2 stops Denver Intl Toronto Pearson Intl
Multiple Airlines Logo
09:00 - 00:20DUB  Dublin-ONT Ontario
23h 20m2 stops Toronto Pearson Intl Denver Intl
€581Multiple Airlines
3+ days ago
Sun, 28 Feb - Thu, 4 Mar
United Airlines Logo
07:00 - 08:10ONT  Ontario-DUB Dublin
17h 10m1 stop Chicago O'Hare Intl
United Airlines Logo
09:00 - 22:59DUB  Dublin-ONT Ontario
45h 59m2 stops Toronto Pearson Intl San Francisco
€624United Airlines
3+ days ago
Sun, 28 Feb - Thu, 4 Mar
United Airlines Logo
07:00 - 09:55ONT  Ontario-DUB Dublin
18h 55m2 stops Chicago O'Hare Intl Newark
United Airlines Logo
09:00 - 22:59DUB  Dublin-ONT Ontario
45h 59m2 stops Toronto Pearson Intl San Francisco
€627United Airlines
3+ days ago
Sun, 28 Feb - Thu, 4 Mar
Air Canada Logo
07:40 - 07:10ONT  Ontario-DUB Dublin
39h 30m2 stops San Francisco Toronto Pearson Intl
Air Canada Logo
09:00 - 20:19DUB  Dublin-ONT Ontario
43h 19m2 stops Toronto Pearson Intl San Francisco
€631Air Canada
1 day ago
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 with more confidence.

What's the cheapest day of the week to fly from Ontario to Dublin?

Based on deals KAYAK users found in the last 12 months, Tuesday is the cheapest day of the week to fly from Ontario to Dublin. It's 51% cheaper than the average day, while Sunday is the most expensive, with prices 17% higher.

Find deals

Key details for Ontario to Dublin flights

Cheapest flight

€300
One-way flight 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 answers about this route, including flight times, airports, airlines, and booking tips.

  • How long is a flight from Ontario to Dublin?

    A direct flight from Ontario to Dublin takes 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 much should I expect to pay for a Ontario to Dublin flight?

    Return flights from Ontario to Dublin range from €889 to €1,081, with an average of €1,022 over the past 12 months. Anything below €889 counts as a good deal.

  • 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 €330, which is 46% below the typical average for this route.

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

    Dublin Airport (DUB) hosts 5 major car hire companies, with daily rates averaging €28 for economy cars. Top options include:

    • Budget
    • Sixt
    • Easirent
    • Europcar
    • Thrifty

  • 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) – 52% of one-stop connections
    • Atlanta Hartsfield-Jackson (ATL) – 15% 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

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

    Yes. Flexible dates can save you up to 58% on flights from Ontario to Dublin. Tuesday is the cheapest departure day at €506 return on average, while Sunday is the most expensive at €1,202, a difference of €696.

    KAYAK's flexible dates feature shows options up to three days before and after your selected dates, making it easier to compare nearby fares.

  • 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 16m, compared to 15h 03m 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.

  • What popular places can I visit in Dublin?

    Some of the most popular sights in Dublin are Bord Gáis Energy Theatre, 3Olympia Theatre, and St. Stephen's Green. These are among the most viewed places in Dublin on KAYAK.

Your guide to booking Ontario to Dublin flights

Get tips on when to book, when to fly, and what to know before your trip.
  • If your dates are flexible, aim for a Tuesday departure and avoid flying on Sunday. On this route, Tuesday flights average €506, about €696 less than Sunday fares (58% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Ontario to Dublin trip for September. Fares historically average €661 return in that month – typically €541 less than the most expensive month, which is August (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Dublin Airport.

    • Clayton Hotel Dublin Airport
    • Maldron Hotel Dublin Airport
    • Metro Hotel Dublin Airport

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