ONT - DUB

$301 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 round-trip
$497
Typical prices: $990-$1,205
Multiple Airlines
Sun 12/2Sun 12/9
ONT - DUB • 2 stops
Cheapest one-way
$301
Typical prices: $624-$773
Multiple Airlines
Sat 12/8
ONT - DUB • 2 stops
Nonstop 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 layover airports
Chicago O'Hare Intl (ORD)
Cheapest • Avg $1,135 (round-trip)
Dallas/Fort Worth (DFW)
Shortest trip • 14h 12m (one-way)
Insights
Insights
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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 round-trip flight deals from Ontario to Dublin

Wed, Dec 2 - Wed, Dec 9
Multiple Airlines Logo
6:00 am - 10:15 amONT  Ontario-DUB Dublin
20h 15m2 stops Denver Intl Reykjavik Keflavik Intl
Multiple Airlines Logo
11:30 am - 10:17 pmDUB  Dublin-ONT Ontario
18h 47m2 stops Reykjavik Keflavik Intl Denver Intl
$497Multiple Airlines
Thu, Dec 3 - Thu, Dec 10
Multiple Airlines Logo
6:00 am - 10:15 amONT  Ontario-DUB Dublin
20h 15m2 stops Denver Intl Reykjavik Keflavik Intl
Multiple Airlines Logo
11:30 am - 12:20 amDUB  Dublin-ONT Ontario
20h 50m2 stops Reykjavik Keflavik Intl Denver Intl
$505Multiple Airlines
Tue, Dec 8 - Tue, Dec 15
Multiple Airlines Logo
6:00 am - 10:15 amONT  Ontario-DUB Dublin
20h 15m2 stops Denver Intl Reykjavik Keflavik Intl
Multiple Airlines Logo
11:30 am - 10:17 pmDUB  Dublin-ONT Ontario
18h 47m2 stops Reykjavik Keflavik Intl Denver Intl
$514Multiple Airlines
Wed, Dec 2 - Wed, Dec 9
Multiple Airlines Logo
7:06 pm - 10:15 amONT  Ontario-DUB Dublin
31h 09m3 stops San Francisco Denver Intl Reykjavik Keflavik Intl
Multiple Airlines Logo
11:30 am - 10:17 pmDUB  Dublin-ONT Ontario
18h 47m2 stops Reykjavik Keflavik Intl Denver Intl
$539Multiple Airlines
Tue, Dec 8 - Tue, Dec 15
Multiple Airlines Logo
6:00 am - 10:15 amONT  Ontario-DUB Dublin
20h 15m2 stops Denver Intl Reykjavik Keflavik Intl
Multiple Airlines Logo
11:30 am - 7:44 amDUB  Dublin-ONT Ontario
28h 14m3 stops Reykjavik Keflavik Intl Denver Intl Dallas/Fort Worth
$541Multiple Airlines
Thu, Dec 3 - Mon, Dec 7
Multiple Airlines Logo
6:00 am - 10:15 amONT  Ontario-DUB Dublin
20h 15m2 stops Denver Intl Reykjavik Keflavik Intl
Multiple Airlines Logo
11:30 am - 11:51 amDUB  Dublin-ONT Ontario
32h 21m3 stops Reykjavik Keflavik Intl Denver Intl Las Vegas Harry Reid Intl
$547Multiple Airlines
Thu, Dec 3 - Thu, Dec 10
Multiple Airlines Logo
6:00 am - 10:15 amONT  Ontario-DUB Dublin
20h 15m2 stops Denver Intl Reykjavik Keflavik Intl
Multiple Airlines Logo
11:30 am - 7:44 amDUB  Dublin-ONT Ontario
28h 14m3 stops Reykjavik Keflavik Intl Denver Intl Dallas/Fort Worth
$549Multiple Airlines
Thu, Dec 3 - Mon, Dec 7
Multiple Airlines Logo
6:00 am - 10:15 amONT  Ontario-DUB Dublin
20h 15m2 stops Denver Intl Reykjavik Keflavik Intl
Multiple Airlines Logo
11:30 am - 12:20 amDUB  Dublin-ONT Ontario
20h 50m2 stops Reykjavik Keflavik Intl Denver Intl
$556Multiple Airlines
Tue, Dec 8 - Tue, Dec 15
Multiple Airlines Logo
6:00 am - 10:15 amONT  Ontario-DUB Dublin
20h 15m2 stops Denver Intl Reykjavik Keflavik Intl
Multiple Airlines Logo
11:30 am - 10:17 pmDUB  Dublin-ONT Ontario
18h 47m2 stops Reykjavik Keflavik Intl Denver Intl
$559Multiple Airlines
Thu, Dec 3 - Mon, Dec 7
Multiple Airlines Logo
6:00 am - 10:15 amONT  Ontario-DUB Dublin
20h 15m2 stops Denver Intl Reykjavik Keflavik Intl
Multiple Airlines Logo
11:30 am - 7:44 amDUB  Dublin-ONT Ontario
28h 14m3 stops Reykjavik Keflavik Intl Denver Intl Dallas/Fort Worth
$566Multiple Airlines
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.

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Key details for Ontario to Dublin flights

Cheapest flight

$301
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 round-trip price

Your Ontario to Dublin flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What cabin classes can I book on flights from Ontario to Dublin?

    Only Economy Class is available on flights from Ontario to Dublin.

  • How long is a flight from Ontario to Dublin?

    A nonstop flight from Ontario to Dublin takes 00m, covering 5,132 miles.

  • 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?

    Round-trip flights from Ontario to Dublin range from $990 to $1,205, with an average of $1,139 over the past 12 months. Anything below $990 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 $355, which is 48% below the typical average for this route.

  • What car rental options are available at Dublin Airport (DUB)?

    Dublin Airport (DUB) hosts 5 major car rental companies, with daily rates averaging $31 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) - 54% of one-stop connections
    • Atlanta Hartsfield-Jackson (ATL) - 14% of one-stop connections
    • New York John F Kennedy Intl (JFK) - 14% of one-stop connections
    • Chicago O'Hare Intl (ORD) - 14% 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 $564 round-trip on average, while Sunday is the most expensive at $1,339, a difference of $775.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

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

    Flying via Dallas/Fort Worth (DFW) gives the shortest average 1-stop total travel time at 14h 12m, compared with 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 St. Stephen's Green, St. Patrick's Cathedral and Aviva Stadium. 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 $564, about $775 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 $736 round-trip in that month - typically $603 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 rental

Car rentals in Dublin
Hotels in Dublin
Vacations in Dublin