DUB - ONT

€375 Find Cheap Flights from Dublin to Ontario – Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest return flight
€540
Typical prices: €537-€629
Iberia
Tue 27/2Thu 8/3
DUB - ONT • 2 stops
Cheapest one-way flight
€375
Typical prices: €665-€694
KLM
Fri 16/11
DUB - ONT • 1 stop
Direct flights
Not available
There are currently no direct flights between Dublin and Ontario. You'll need to take a connecting flight to reach the destination.
Insights
Insights
Top stopover airports
Dallas/Fort Worth (DFW)
Cheapest • Avg €577 (return)
Chicago O'Hare Intl (ORD)
Shortest trip • 19h 02m (one-way)
Insights
Insights
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Booking Insights
Flight Deals

Cheap Flights from Dublin to Ontario (DUB-ONT)

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

Recent return flight deals from Dublin to Ontario

Sat, 27 Feb - Mon, 8 Mar
Multiple Airlines Logo
18:30 - 09:41DUB  Dublin-ONT Ontario
23h 11m2 stops Madrid Barajas Dallas/Fort Worth
Multiple Airlines Logo
14:22 - 15:25ONT  Ontario-DUB Dublin
17h 03m2 stops Dallas/Fort Worth London Heathrow
€540Multiple Airlines
Thu, 21 Jan - Mon, 25 Jan
British Airways Logo
08:50 - 21:59DUB  Dublin-ONT Ontario
21h 09m2 stops London Heathrow Phoenix Sky Harbor Intl
British Airways Logo
10:40 - 15:25ONT  Ontario-DUB Dublin
20h 45m2 stops Dallas/Fort Worth London Heathrow
€555British Airways
Thu, 21 Jan - Mon, 25 Jan
British Airways Logo
08:50 - 21:59DUB  Dublin-ONT Ontario
21h 09m2 stops London Heathrow Phoenix Sky Harbor Intl
British Airways Logo
10:40 - 15:25ONT  Ontario-DUB Dublin
20h 45m2 stops Dallas/Fort Worth London Heathrow
€555British Airways
Thu, 21 Jan - Mon, 25 Jan
British Airways Logo
08:50 - 21:59DUB  Dublin-ONT Ontario
21h 09m2 stops London Heathrow Phoenix Sky Harbor Intl
British Airways Logo
10:40 - 15:25ONT  Ontario-DUB Dublin
20h 45m2 stops Dallas/Fort Worth London Heathrow
€557British Airways
Sat, 7 Nov - Mon, 23 Nov
American Airlines Logo
12:55 - 22:57DUB  Dublin-ONT Ontario
18h 02m1 stop Dallas/Fort Worth
American Airlines Logo
10:37 - 07:10ONT  Ontario-DUB Dublin
12h 33m1 stop Dallas/Fort Worth
€563American Airlines
Thu, 5 Nov - Sat, 21 Nov
American Airlines Logo
12:55 - 21:32DUB  Dublin-ONT Ontario
16h 37m1 stop Dallas/Fort Worth
American Airlines Logo
23:59 - 07:10ONT  Ontario-DUB Dublin
23h 11m1 stop Dallas/Fort Worth
€563American Airlines
Thu, 5 Nov - Mon, 9 Nov
American Airlines Logo
12:55 - 23:46DUB  Dublin-ONT Ontario
18h 51m1 stop Dallas/Fort Worth
American Airlines Logo
23:59 - 07:10ONT  Ontario-DUB Dublin
23h 11m1 stop Dallas/Fort Worth
€565American Airlines
Fri, 6 Nov - Sat, 21 Nov
American Airlines Logo
12:55 - 21:32DUB  Dublin-ONT Ontario
16h 37m1 stop Dallas/Fort Worth
American Airlines Logo
23:59 - 07:10ONT  Ontario-DUB Dublin
23h 11m1 stop Dallas/Fort Worth
€565American Airlines
Thu, 5 Nov - Mon, 9 Nov
American Airlines Logo
11:30 - 21:32DUB  Dublin-ONT Ontario
18h 02m2 stops Philadelphia Dallas/Fort Worth
American Airlines Logo
06:00 - 07:10ONT  Ontario-DUB Dublin
17h 10m1 stop Dallas/Fort Worth
€565American Airlines
Sat, 7 Nov - Mon, 23 Nov
American Airlines Logo
12:55 - 22:57DUB  Dublin-ONT Ontario
18h 02m1 stop Dallas/Fort Worth
American Airlines Logo
10:37 - 07:10ONT  Ontario-DUB Dublin
12h 33m1 stop Dallas/Fort Worth
€565American Airlines
Booking Insights

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

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

What is the cheapest airline to fly from Dublin to Ontario?

British Airways (€555) and American Airlines (€562) are the cheapest airlines to fly return from Dublin to Ontario according to KAYAK data over the last 5 days.

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Key details for Dublin to Ontario flights

Cheapest flight

€375
Flights from Dublin to Ontario

When to book flights from Dublin to Ontario

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

Your Dublin to Ontario 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 Dublin to Ontario?

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

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

    Connecting flights from Dublin to Ontario most commonly pass through:

    • Dallas/Fort Worth (DFW) – 86% of one-stop connections
    • Chicago O'Hare Intl (ORD) – 14% of one-stop connections
    Together, these airports account for 100% of one-stop bookings on this route.

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

    Yes. Being flexible with your travel dates can save you up to 33% on the Dublin to Ontario route. Tuesday is the cheapest departure day at €537 return on average, while Saturday is the most expensive at €792, a difference of €255. 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 long is a flight from Dublin to Ontario?

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

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

    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.

  • Have flight prices from Dublin to Ontario changed much recently?

    Yes. Based on fares seen in the past 5 days, return flight prices on this route showed a wide range, from about €540 to €4,621. That means the highest observed fare was about 9x higher than the lowest one.

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

    One-way fares from Dublin to Ontario are currently lower than usual. Average one-way flight prices are about €426, which is 39% below the typical average for this route.

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

    Flying via Dallas/Fort Worth (DFW) gives the shortest average 1-stop total travel time of 14h 41m, compared to 19h 02m via Chicago O'Hare Intl (ORD).

  • What is the time difference between Dublin and Ontario?

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

  • Which car hire options are available at Ontario Airport (ONT)?

    Ontario Airport (ONT) hosts 5 major car hire companies, with daily rates starting from around €16 for economy cars. Top options include:
    • Fox
    • Thrifty
    • Europcar
    • Dollar
    • Alamo

Your guide to booking Dublin to Ontario flights

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

More options for your flight from Dublin to Ontario

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

Car hire in Ontario