$329 Cheap Flights from Ontario to Ireland in 2026 | momondo

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Find the cheapest flights from Ontario to Ireland

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One-way

Last minute

Cheap round-trip flights

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7:00 am - 8:45 amONT Ontario-DUB Dublin

17h 45m2 stops Seattle/Tacoma Intl New York John F Kennedy Intl

9:40 am - 8:54 pmDUB Dublin-ONT Ontario

19h 14m1 stop Atlanta Hartsfield-Jackson

$560Multiple Airlines

Mon, Nov 9 - Tue, Nov 17

7:00 am - 8:45 amONT Ontario-DUB Dublin

17h 45m2 stops Seattle/Tacoma Intl New York John F Kennedy Intl

5:45 am - 4:24 pmDUB Dublin-ONT Ontario

18h 39m2 stops Amsterdam Schiphol Salt Lake City

$579Multiple Airlines

Mon, Nov 9 - Tue, Nov 17

7:05 am - 7:45 amONT Ontario-DUB Dublin

16h 40m1 stop Atlanta Hartsfield-Jackson

9:40 am - 8:59 pmDUB Dublin-ONT Ontario

19h 19m1 stop Atlanta Hartsfield-Jackson

$585Delta

Mon, Dec 7 - Tue, Dec 15

7:05 am - 7:45 amONT Ontario-DUB Dublin

16h 40m1 stop Atlanta Hartsfield-Jackson

9:40 am - 8:59 pmDUB Dublin-ONT Ontario

19h 19m1 stop Atlanta Hartsfield-Jackson

$585Delta

Wed, Dec 9 - Tue, Dec 15

7:05 am - 7:45 amONT Ontario-DUB Dublin

16h 40m1 stop Atlanta Hartsfield-Jackson

9:40 am - 8:54 pmDUB Dublin-ONT Ontario

19h 14m1 stop Atlanta Hartsfield-Jackson

$585KLM

Mon, Nov 9 - Tue, Nov 17

7:05 am - 7:45 amONT Ontario-DUB Dublin

16h 40m1 stop Atlanta Hartsfield-Jackson

9:40 am - 7:49 pmDUB Dublin-ONT Ontario

18h 09m1 stop Atlanta Hartsfield-Jackson

$585KLM

Tue, Nov 17 - Thu, Nov 26

7:05 am - 7:45 amONT Ontario-DUB Dublin

16h 40m1 stop Atlanta Hartsfield-Jackson

9:40 am - 8:54 pmDUB Dublin-ONT Ontario

19h 14m1 stop Atlanta Hartsfield-Jackson

$585Delta

Mon, Nov 16 - Wed, Nov 25

7:05 am - 7:45 amONT Ontario-DUB Dublin

16h 40m1 stop Atlanta Hartsfield-Jackson

9:40 am - 7:49 pmDUB Dublin-ONT Ontario

18h 09m1 stop Atlanta Hartsfield-Jackson

$585Delta

Mon, Nov 16 - Thu, Nov 26

10:25 am - 9:45 amONT Ontario-DUB Dublin

15h 20m1 stop Dallas/Fort Worth

12:40 pm - 6:44 pmDUB Dublin-ONT Ontario

14h 04m1 stop Dallas/Fort Worth

$850American Airlines

Wed, Oct 7 - Tue, Oct 13

12:43 pm - 9:45 amONT Ontario-DUB Dublin

13h 02m1 stop Dallas/Fort Worth

12:55 pm - 9:35 amDUB Dublin-ONT Ontario

27h 40m1 stop Dallas/Fort Worth

$960American Airlines

Tue, Oct 13 - Tue, Oct 27

Cheap last minute flights

Enter your travel dates to find the best prices.

12:37 pm - 9:45 amONT Ontario-DUB Dublin

13h 08m1 stop Dallas/Fort Worth

12:40 pm - 9:09 pmDUB Dublin-ONT Ontario

16h 29m1 stop Dallas/Fort Worth

$890Iberia

Thu, Sep 17 - Thu, Sep 24

10:25 am - 9:45 amONT Ontario-DUB Dublin

15h 20m1 stop Dallas/Fort Worth

12:40 pm - 8:09 pmDUB Dublin-ONT Ontario

15h 29m1 stop Dallas/Fort Worth

$967Iberia

Mon, Sep 14 - Wed, Sep 23

12:37 pm - 9:45 amONT Ontario-DUB Dublin

13h 08m1 stop Dallas/Fort Worth

12:40 pm - 10:37 pmDUB Dublin-ONT Ontario

17h 57m1 stop Dallas/Fort Worth

$967Iberia

Tue, Sep 15 - Wed, Sep 23

7:00 am - 9:45 amONT Ontario-DUB Dublin

18h 45m1 stop Chicago O'Hare Intl

9:20 am - 10:59 pmDUB Dublin-ONT Ontario

45h 39m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$995United Airlines

Tue, Sep 15 - Mon, Sep 21

10:25 am - 9:45 amONT Ontario-DUB Dublin

15h 20m1 stop Dallas/Fort Worth

12:40 pm - 8:07 pmDUB Dublin-ONT Ontario

15h 27m1 stop Dallas/Fort Worth

$1,028Iberia

Sun, Sep 13 - Tue, Sep 15

9:01 am - 8:15 amONT Ontario-DUB Dublin

15h 14m2 stops San Francisco Toronto Pearson Intl

9:50 am - 6:16 pmDUB Dublin-ONT Ontario

16h 26m2 stops Vancouver Intl San Francisco

$1,029Multiple Airlines

Tue, Sep 15 - Wed, Sep 23

7:05 am - 11:10 amONT Ontario-SNN Shannon

20h 05m2 stops Atlanta Hartsfield-Jackson New York John F Kennedy Intl

1:05 pm - 11:47 pmSNN Shannon-ONT Ontario

18h 42m2 stops New York John F Kennedy Intl Salt Lake City

$1,053KLM

Mon, Sep 14 - Fri, Sep 18

8:00 am - 8:15 amONT Ontario-DUB Dublin

16h 15m2 stops San Francisco Toronto Pearson Intl

9:50 am - 6:11 pmDUB Dublin-ONT Ontario

16h 21m2 stops Vancouver Intl San Francisco

$1,072Multiple Airlines

Sat, Sep 12 - Sat, Sep 19

9:01 am - 8:15 amONT Ontario-DUB Dublin

15h 14m2 stops San Francisco Toronto Pearson Intl

9:50 am - 5:46 pmDUB Dublin-ONT Ontario

15h 56m2 stops Vancouver Intl San Francisco

$1,166Multiple Airlines

Thu, Sep 17 - Sat, Sep 26

6:08 am - 7:45 amONT Ontario-DUB Dublin

17h 37m2 stops San Francisco Montreal Pierre Elliott Trudeau Intl

11:35 am - 10:59 pmDUB Dublin-ONT Ontario

19h 24m1 stop Chicago O'Hare Intl

$1,190United Airlines

Mon, Sep 14 - Wed, Sep 23

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Iberia flights from Ontario to Ireland

Our best Iberia deals on Ontario to Ireland flight tickets

Iberia

Nov 9

ONT6:00 amOntario

17h 10m

1 stop

DUB7:10 amDublin

Nov 17

DUB12:55 pmDublin

18h 02m

1 stop

ONT10:57 pmOntario

$692

Iberia

Sep 22

ONT12:37 pmOntario

13h 08m

1 stop

DUB9:45 amDublin

Oct 6

DUB12:40 pmDublin

18h 00m

1 stop

ONT10:40 pmOntario

$755

Iberia

Sep 17

ONT12:37 pmOntario

13h 08m

1 stop

DUB9:45 amDublin

Sep 24

DUB12:40 pmDublin

16h 29m

1 stop

ONT9:09 pmOntario

$890

KLM flights from Ontario to Ireland

Our best KLM deals on Ontario to Ireland flight tickets

KLM

Sep 23

ONT7:05 amOntario

18h 55m

2 stops

DUB10:00 amDublin

Oct 7

DUB11:00 amDublin

17h 25m

1 stop

ONT8:25 pmOntario

$633

KLM

Nov 7

ONT7:07 amOntario

16h 38m

1 stop

DUB7:45 amDublin

Nov 14

DUB9:40 amDublin

18h 09m

1 stop

ONT7:49 pmOntario

$685

KLM

Sep 23

ONT7:05 amOntario

17h 40m

1 stop

DUB8:45 amDublin

Sep 28

DUB11:00 amDublin

15h 07m

1 stop

ONT6:07 pmOntario

$689

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioDublin

ONT Ontario - DUB Dublin

ONTDUB

Ontario

Mon 11/9

7:00 am-8:45 am

2 stops17h 45m

Dublin

Tue 11/17

9:40 am-8:54 pm

1 stop19h 14m

$560

OntarioDublin

ONT Ontario - DUB Dublin

ONTDUB

Ontario

Mon 11/9

7:00 am-8:45 am

2 stops17h 45m

Dublin

Tue 11/17

5:45 am-4:24 pm

2 stops18h 39m

$579

OntarioDublin

ONT Ontario - DUB Dublin

ONTDUB

Ontario

Mon 12/7

7:05 am-7:45 am

1 stop16h 40m

Dublin

Tue 12/15

9:40 am-8:59 pm

1 stop19h 19m

$585

OntarioDublin

ONT Ontario - DUB Dublin

ONTDUB

Ontario

Wed 12/9

7:05 am-7:45 am

1 stop16h 40m

Dublin

Tue 12/15

9:40 am-8:59 pm

1 stop19h 19m

$585

OntarioDublin

ONT Ontario - DUB Dublin

ONTDUB

Ontario

Mon 11/9

7:05 am-7:45 am

1 stop16h 40m

Dublin

Tue 11/17

9:40 am-8:54 pm

1 stop19h 14m

$585

OntarioDublin

ONT Ontario - DUB Dublin

ONTDUB

Ontario

Tue 11/17

7:05 am-7:45 am

1 stop16h 40m

Dublin

Thu 11/26

9:40 am-7:49 pm

1 stop18h 09m

$585

OntarioDublin

ONT Ontario - DUB Dublin

ONTDUB

Ontario

Mon 11/16

7:05 am-7:45 am

1 stop16h 40m

Dublin

Wed 11/25

9:40 am-8:54 pm

1 stop19h 14m

$585

OntarioDublin

ONT Ontario - DUB Dublin

ONTDUB

Ontario

Mon 11/16

7:05 am-7:45 am

1 stop16h 40m

Dublin

Thu 11/26

9:40 am-7:49 pm

1 stop18h 09m

$585

Quickest round-trip

OntarioDublin

ONT Ontario - DUB Dublin

ONTDUB

Ontario

Wed 10/7

10:25 am-9:45 am

1 stop15h 20m

Dublin

Tue 10/13

12:40 pm-6:44 pm

1 stop14h 04m

$850

OntarioDublin

ONT Ontario - DUB Dublin

ONTDUB

Ontario

Tue 10/13

12:43 pm-9:45 am

1 stop13h 02m

Dublin

Tue 10/27

12:55 pm-9:35 am

1 stop27h 40m

$960

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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How to get the cheapest flight ticket from Ontario to Ireland

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Can stopping save me money on Ontario to Ireland flights?

You could potentially save up to 34% on your flight if you consider stops on a Ontario to Ireland flight.

Cheap Ontario to Ireland flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Ireland

Best Price Found	$329
Fastest flight time	12h 45m
Direct flights	None

The best one-way flight to Ireland from Ontario in the past 72 hours is $329. The best round-trip flight deal from Ontario to Ireland found on momondo in the last 72 hours is $560.

The fastest flight from Ontario to Ireland takes 12h 45m

There are no direct flights from Ontario to Ireland. There are no popular flight routes from Ontario to Ireland.

Search flight deals

Frequently asked questions about flying from Ontario to Ireland

When did momondo last update prices for flights from Ontario Airport to Ireland?
Prices for flights from Ontario Airport to Ireland are refreshed on a daily basis.
How many operators does momondo search for flights from Ontario Airport to Ireland?
As of September 2026, there is 1 operator available to choose from for flights from Ontario Airport to Ireland.
How old do you have to be to fly from Ontario Airport to Ireland?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Ireland.
What documentation or ID do you need to fly to Ireland?
The necessary travel and health documents for your Ireland trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Ontario to Ireland

Compare and see reviews for airlines that fly from Ontario to Ireland with momondo

Airline	Rating	Free Cancellation	Price
American Airlines	PriceFrom $728	Free Cancellation	Rating 7.1 12,045 reviews		Search American Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Ireland?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Ireland from Ontario.

Can I find flights from Ontario to Ireland with flexible booking policies on momondo?

momondo does allow users to show only those flights to Ireland from Ontario which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Ontario to Ireland?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Ontario to Ireland.

I’m not ready to book a flight from Ontario to Ireland right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Ontario to Ireland flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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