What is the cheapest airline that flies from Ontario to Dublin?

United Airlines, Delta, and JetBlue are the most popular carriers operating from Ontario to Dublin

What airlines fly to Dublin?

Aer Lingus, American Airlines and Scandinavian Airlines are the top three most popular airlines that fly to Dublin from Ontario according to our data. Aer Lingus is the first choice among our users, with 81% of people opting to fly with this airline when traveling to Dublin. Keep in mind that there are 13 different airlines that fly to Dublin on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Ontario Airport to Dublin Airport?

Prices for flights from Ontario Airport to Dublin Airport were last updated today.

How many operators does momondo search for flights from Ontario Airport to Dublin Airport?

The number of operators available for flights from Ontario Airport to Dublin Airport is 1 as of September 2026.

How old do you have to be to fly from Ontario Airport to Dublin Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Dublin Airport.

What documentation or ID do you need to fly to Dublin Airport?

The required travel and health documents for your Dublin Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Dublin Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$329 Cheap Flights from Ontario to Dublin in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ontario to Dublin

Round-trip

One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

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

$707KLM

Wed, Dec 2 - Tue, Dec 8

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

16h 45m1 stop Atlanta Hartsfield-Jackson

9:40 am - 10:14 pmDUB Dublin-ONT Ontario

20h 34m1 stop Atlanta Hartsfield-Jackson

$712Delta

Tue, Feb 23 - Fri, Feb 26

6:45 am - 8:10 amONT Ontario-DUB Dublin

17h 25m1 stop Chicago O'Hare Intl

9:30 am - 8:20 pmDUB Dublin-ONT Ontario

18h 50m2 stops Newark Denver Intl

$712United Airlines

Sun, Feb 21 - Wed, Mar 3

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

16h 45m1 stop Atlanta Hartsfield-Jackson

9:40 am - 10:14 pmDUB Dublin-ONT Ontario

20h 34m1 stop Atlanta Hartsfield-Jackson

$712Delta

Tue, Feb 23 - Thu, Feb 25

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

16h 45m1 stop Atlanta Hartsfield-Jackson

9:40 am - 10:14 pmDUB Dublin-ONT Ontario

20h 34m1 stop Atlanta Hartsfield-Jackson

$712KLM

Sun, Feb 21 - Wed, Mar 3

2:09 pm - 4:55 pmONT Ontario-DUB Dublin

18h 46m2 stops Dallas/Fort Worth London Heathrow

11:00 am - 10:12 pmDUB Dublin-ONT Ontario

19h 12m2 stops London Heathrow Charlotte Douglas

$714British Airways

Tue, Dec 1 - Tue, Dec 8

6:00 am - 7:30 amONT Ontario-DUB Dublin

17h 30m2 stops San Francisco Newark

10:40 am - 6:44 pmDUB Dublin-ONT Ontario

16h 04m1 stop Chicago O'Hare Intl

$716United Airlines

Wed, Feb 10 - Fri, Feb 19

6:00 am - 7:30 amONT Ontario-DUB Dublin

17h 30m2 stops Houston George Bush Intcntl Newark

9:30 am - 8:20 pmDUB Dublin-ONT Ontario

18h 50m2 stops Newark Denver Intl

$717United Airlines

Sun, Feb 21 - Wed, Mar 3

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

18h 45m1 stop Dallas/Fort Worth

11:45 am - 10:59 pmDUB Dublin-ONT Ontario

19h 14m1 stop Charlotte Douglas

$900American Airlines

Thu, Oct 15 - Thu, Oct 22

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

15h 20m1 stop Dallas/Fort Worth

12:55 pm - 11:52 pmDUB Dublin-ONT Ontario

17h 57m1 stop Dallas/Fort Worth

$905American Airlines

Mon, Oct 19 - Mon, Oct 26

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 - 6:53 pmDUB Dublin-ONT Ontario

14h 13m1 stop Dallas/Fort Worth

$906American Airlines

Thu, Sep 10 - Thu, Sep 17

7:05 am - 8:45 amONT Ontario-DUB Dublin

17h 40m1 stop Atlanta Hartsfield-Jackson

11:00 am - 6:07 pmDUB Dublin-ONT Ontario

15h 07m1 stop Atlanta Hartsfield-Jackson

$916Delta

Sun, Sep 6 - Mon, Sep 14

7:05 am - 8:45 amONT Ontario-DUB Dublin

17h 40m1 stop Atlanta Hartsfield-Jackson

11:00 am - 6:07 pmDUB Dublin-ONT Ontario

15h 07m1 stop Atlanta Hartsfield-Jackson

$916Delta

Mon, Sep 7 - Mon, Sep 14

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

$929Iberia

Wed, Sep 9 - Thu, Sep 17

7:05 am - 8:45 amONT Ontario-DUB Dublin

17h 40m1 stop Atlanta Hartsfield-Jackson

11:00 am - 6:07 pmDUB Dublin-ONT Ontario

15h 07m1 stop Atlanta Hartsfield-Jackson

$966Delta

Sat, Sep 5 - Mon, Sep 14

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

13h 08m1 stop Dallas/Fort Worth

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

15h 27m1 stop Dallas/Fort Worth

$1,076Iberia

Thu, Sep 10 - Tue, Sep 15

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

18h 45m1 stop Chicago O'Hare Intl

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

19h 00m1 stop Chicago O'Hare Intl

$1,086United Airlines

Sat, Sep 5 - Mon, Sep 7

5:00 am - 7:30 amONT Ontario-DUB Dublin

18h 30m2 stops Denver Intl Newark

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

19h 00m1 stop Chicago O'Hare Intl

$1,090United Airlines

Sat, Sep 5 - Mon, Sep 7

5:00 am - 7:30 amONT Ontario-DUB Dublin

18h 30m2 stops Denver Intl Newark

11:35 am - 8:53 pmDUB Dublin-ONT Ontario

17h 18m2 stops Chicago O'Hare Intl Denver Intl

$1,090United Airlines

Sat, Sep 5 - Mon, Sep 7

12:33 pm - 9:45 amONT Ontario-DUB Dublin

13h 12m1 stop Dallas/Fort Worth

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

15h 29m1 stop Dallas/Fort Worth

$1,183British Airways

Mon, Sep 7 - Wed, Sep 9

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Iberia flights from Ontario to Dublin

Our best Iberia deals on Ontario to Dublin flight tickets

Iberia

Nov 24

ONT7:00 amOntario

16h 10m

1 stop

DUB7:10 amDublin

Dec 2

DUB10:00 amDublin

31h 40m

2 stops

ONT9:40 amOntario

$752

Iberia

Nov 24

ONT6:00 amOntario

19h 20m

2 stops

DUB9:20 amDublin

Dec 2

DUB10:00 amDublin

31h 40m

2 stops

ONT9:40 amOntario

$760

Iberia

Oct 20

ONT10:25 amOntario

15h 20m

1 stop

DUB9:45 amDublin

Nov 5

DUB12:55 pmDublin

16h 37m

1 stop

ONT9:32 pmOntario

$772

Air Canada flights from Ontario to Dublin

Our best Air Canada deals on Ontario to Dublin flight tickets

Air Canada

Nov 3

ONT1:35 pmOntario

33h 35m

2 stops

DUB7:10 amDublin

Nov 12

DUB9:00 amDublin

21h 48m

2 stops

ONT10:48 pmOntario

$768

Air Canada

Oct 13

ONT5:00 amOntario

19h 15m

2 stops

DUB8:15 amDublin

Nov 1

DUB9:00 amDublin

19h 51m

2 stops

ONT8:51 pmOntario

$822

Air Canada

Oct 12

ONT6:07 amOntario

41h 38m

2 stops

DUB7:45 amDublin

Oct 20

DUB9:50 amDublin

43h 08m

2 stops

ONT8:58 pmOntario

$823

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioDublin

ONT Ontario - DUB Dublin

ONTDUB

Ontario

Wed 12/2

7:05 am-7:45 am

1 stop16h 40m

Dublin

Tue 12/8

9:40 am-8:59 pm

1 stop19h 19m

$707

OntarioDublin

ONT Ontario - DUB Dublin

ONTDUB

Ontario

Tue 2/23

7:00 am-7:45 am

1 stop16h 45m

Dublin

Fri 2/26

9:40 am-10:14 pm

1 stop20h 34m

$712

OntarioDublin

ONT Ontario - DUB Dublin

ONTDUB

Ontario

Sun 2/21

6:45 am-8:10 am

1 stop17h 25m

Dublin

Wed 3/3

9:30 am-8:20 pm

2 stops18h 50m

$712

OntarioDublin

ONT Ontario - DUB Dublin

ONTDUB

Ontario

Tue 2/23

7:00 am-7:45 am

1 stop16h 45m

Dublin

Thu 2/25

9:40 am-10:14 pm

1 stop20h 34m

$712

OntarioDublin

ONT Ontario - DUB Dublin

ONTDUB

Ontario

Sun 2/21

7:00 am-7:45 am

1 stop16h 45m

Dublin

Wed 3/3

9:40 am-10:14 pm

1 stop20h 34m

$712

OntarioDublin

ONT Ontario - DUB Dublin

ONTDUB

Ontario

Tue 12/1

2:09 pm-4:55 pm

2 stops18h 46m

Dublin

Tue 12/8

11:00 am-10:12 pm

2 stops19h 12m

$714

OntarioDublin

ONT Ontario - DUB Dublin

ONTDUB

Ontario

Wed 2/10

6:00 am-7:30 am

2 stops17h 30m

Dublin

Fri 2/19

10:40 am-6:44 pm

1 stop16h 04m

$716

OntarioDublin

ONT Ontario - DUB Dublin

ONTDUB

Ontario

Sun 2/21

6:00 am-7:30 am

2 stops17h 30m

Dublin

Wed 3/3

9:30 am-8:20 pm

2 stops18h 50m

$717

OntarioDublin

ONT Ontario - DUB Dublin

ONTDUB

Ontario

Thu 10/15

7:00 am-9:45 am

1 stop18h 45m

Dublin

Thu 10/22

11:45 am-10:59 pm

1 stop19h 14m

$900

Quickest round-trip

OntarioDublin

ONT Ontario - DUB Dublin

ONTDUB

Ontario

Mon 10/19

10:25 am-9:45 am

1 stop15h 20m

Dublin

Mon 10/26

12:55 pm-11:52 pm

1 stop17h 57m

$905

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Ontario to Dublin

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

What is the cheapest day to depart on your flight to Dublin?

The cheapest day to depart from Ontario to Dublin is on a Sunday. Travelers who choose to depart for Dublin on a Sunday will often find tickets for as low as $862. Flights from Ontario to Dublin on a Tuesday will generally be more expensive and average around $987. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Dublin?

In the afternoon is the cheapest time of day to fly from Ontario to Dublin when you can find flight prices for as low as $812. Flying to Dublin in the afternoon is an ideal time because this is during off-peak travel hours. Flights in the evening are often more expensive with an average ticket price of $913.

Can stopping save me money on Ontario to Dublin flights?

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

When to book flights from Ontario to Dublin

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Dublin according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Ontario to Dublin (ONT to DUB) flight deals and tips

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

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

The best one-way flight to Dublin from Ontario in the past 72 hours is $329. The best round-trip flight deal from Ontario to Dublin found on momondo in the last 72 hours is $707.

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

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

Search flight deals

Frequently asked questions about flying from Ontario to Dublin

How far is Ontario to Dublin by plane?
The distance between Ontario and Dublin is about 5136.8 mi. Typically, this will take 12h 45m by plane in normal conditions.
When did momondo last update prices for flights from Ontario Airport to Dublin Airport?
Prices for flights from Ontario Airport to Dublin Airport were last updated today.
How many operators does momondo search for flights from Ontario Airport to Dublin Airport?
The number of operators available for flights from Ontario Airport to Dublin Airport is 1 as of September 2026.
How old do you have to be to fly from Ontario Airport to Dublin Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Dublin Airport.
What documentation or ID do you need to fly to Dublin Airport?
The required travel and health documents for your Dublin Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Dublin Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Ontario to Dublin?
Based on momondo bookings for flights between Ontario and Dublin, the leading airline is American Airlines, making up 100% of the total bookings.

Best airlines flying from Ontario to Dublin

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

Airline	Rating	Free Cancellation	Price
American Airlines	PriceFrom $728	Free Cancellation	Rating 7.1 12,036 reviews		Search American Airlines flights

Kilkenny

Swords

Athlone

Kildare

Malahide

Mullingar

Wicklow

Portmarnock

Leixlip

Bray

Carlingford

Dundalk

Naas

Arklow

Slane

Castleknock

Drogheda

Gorey

Cavan

Maynooth

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Ontario to Dublin. momondo saves you time and could save you money on your trip.

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

Yes. momondo allows you to filter the results for Ontario to Dublin flights to just show those with flexible booking policies.

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

momondo helps you find the best flight between Ontario and Dublin by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Yes. momondo can track prices for Ontario to Dublin 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.

An easier way to manage your Dublin trip

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Cheap flights from Ontario to Dublin from $329

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Dublin departing on 12/13. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Iberia flights from Ontario to Dublin

Our best Iberia deals on Ontario to Dublin flight tickets

Air Canada flights from Ontario to Dublin

Our best Air Canada deals on Ontario to Dublin flight tickets

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See travel insights to Dublin from

How to get the cheapest flight ticket from Ontario to Dublin

What is the cheapest day to depart on your flight to Dublin?

What is the cheapest time of day to depart on your flight to Dublin?

Can stopping save me money on Ontario to Dublin flights?

What is the cheapest airline that flies from Ontario to Dublin?

What airlines fly to Dublin?

When to book flights from Ontario to Dublin

Cheap Ontario to Dublin (ONT to DUB) flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from Ontario to Dublin

Best airlines flying from Ontario to Dublin

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

Traveling to a place near Dublin?

Why use momondo?

An easier way to manage your Dublin trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Ireland

Airports servicing Ireland

Fly your favorite airline to Dublin

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Dublin

List of cabin classes available on flights landing in Dublin. Availability may vary depending on flight origin and airline.

Popular cities in Ireland

Popular flights according to clicks in the last 7 days on momondo

Fly to other destinations from Ontario

According to popular flight searches on momondo this year

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