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Cheap flights from Ontario to Dublin from $321

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 8/29. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ontario to Dublin

Cheap round-trip flights

Enter your travel dates to find the best prices.
JetBlue Logo
11:59 pm - 9:00 am
ONT
-
DUB
25h 01m
1 stop
JetBlue Logo
11:30 am - 10:37 pm
DUB
-
ONT
19h 07m
1 stop
$833JetBlue
Thu, Aug 13 - Wed, Aug 26
JetBlue Logo
11:59 pm - 9:00 am
ONT
-
DUB
25h 01m
1 stop
JetBlue Logo
11:30 am - 10:35 pm
DUB
-
ONT
19h 05m
1 stop
$850JetBlue
Sun, Aug 23 - Tue, Sep 8
JetBlue Logo
11:59 pm - 9:00 am
ONT
-
DUB
25h 01m
1 stop
JetBlue Logo
11:30 am - 10:37 pm
DUB
-
ONT
19h 07m
1 stop
$851JetBlue
Sun, Aug 23 - Tue, Sep 8
JetBlue Logo
11:59 pm - 9:00 am
ONT
-
DUB
25h 01m
1 stop
JetBlue Logo
11:30 am - 10:37 pm
DUB
-
ONT
19h 07m
1 stop
$852JetBlue
Sun, Aug 23 - Tue, Sep 8
United Airlines Logo
7:00 am - 9:45 am
ONT
-
DUB
18h 45m
1 stop
United Airlines Logo
9:20 am - 10:59 pm
DUB
-
ONT
45h 39m
2 stops
$853United Airlines
Tue, Sep 8 - Tue, Sep 15
United Airlines Logo
7:00 am - 9:45 am
ONT
-
DUB
18h 45m
1 stop
United Airlines Logo
9:20 am - 6:11 pm
DUB
-
ONT
40h 51m
2 stops
$857United Airlines
Wed, Aug 26 - Wed, Sep 9
JetBlue Logo
11:59 pm - 9:00 am
ONT
-
DUB
25h 01m
1 stop
JetBlue Logo
11:30 am - 8:57 pm
DUB
-
ONT
17h 27m
1 stop
$858JetBlue
Wed, Sep 2 - Fri, Sep 11
United Airlines Logo
7:00 am - 7:45 am
ONT
-
DUB
16h 45m
2 stops
United Airlines Logo
9:20 am - 6:11 pm
DUB
-
ONT
40h 51m
2 stops
$861United Airlines
Wed, Aug 26 - Wed, Sep 9
United Airlines Logo
5:00 am - 7:30 am
ONT
-
DUB
18h 30m
2 stops
United Airlines Logo
9:20 am - 8:01 pm
DUB
-
ONT
42h 41m
2 stops
$862United Airlines
Wed, Sep 2 - Fri, Sep 11
Air Canada Logo
5:00 am - 7:45 am
ONT
-
DUB
18h 45m
2 stops
Air Canada Logo
9:20 am - 12:12 pm
DUB
-
ONT
34h 52m
2 stops
$865Air Canada
Tue, Sep 8 - Tue, Sep 15

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Iberia flights from Ontario to Dublin

Our best Iberia deals on Ontario to Dublin flight tickets
Iberia
Aug 17
ONT10:29 amOntario
15h 16m
1 stop
DUB9:45 amDublin
Sep 1
DUB12:40 pmDublin
18h 19m
1 stop
ONT10:59 pmOntario
$872
Iberia
Aug 23
ONT12:33 pmOntario
13h 12m
1 stop
DUB9:45 amDublin
Sep 8
DUB12:40 pmDublin
18h 19m
1 stop
ONT10:59 pmOntario
$887
Iberia
Aug 23
ONT12:33 pmOntario
13h 12m
1 stop
DUB9:45 amDublin
Sep 8
DUB12:40 pmDublin
18h 19m
1 stop
ONT10:59 pmOntario
$901

JetBlue flights from Ontario to Dublin

Our best JetBlue deals on Ontario to Dublin flight tickets
JetBlue
Aug 13
ONT11:59 pmOntario
25h 01m
1 stop
DUB9:00 amDublin
Aug 26
DUB11:30 amDublin
19h 07m
1 stop
ONT10:37 pmOntario
$833
JetBlue
Aug 23
ONT11:59 pmOntario
25h 01m
1 stop
DUB9:00 amDublin
Sep 8
DUB11:30 amDublin
19h 05m
1 stop
ONT10:35 pmOntario
$850
JetBlue
Aug 23
ONT11:59 pmOntario
25h 01m
1 stop
DUB9:00 amDublin
Sep 8
DUB11:30 amDublin
19h 07m
1 stop
ONT10:37 pmOntario
$851

momondo Fare Finder

 
Customize your flight search to find flights from Ontario to Dublin that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated July 25, 2026.
Use the filters below to find and compare flights from Ontario to Dublin that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Thu 8/13

11:59 pm-9:00 am

1 stop25h 01m

Dublin

Wed 8/26

11:30 am-10:37 pm

1 stop19h 07m

$833

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Sun 8/23

11:59 pm-9:00 am

1 stop25h 01m

Dublin

Tue 9/8

11:30 am-10:35 pm

1 stop19h 05m

$850

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Sun 8/23

11:59 pm-9:00 am

1 stop25h 01m

Dublin

Tue 9/8

11:30 am-10:37 pm

1 stop19h 07m

$851

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Sun 8/23

11:59 pm-9:00 am

1 stop25h 01m

Dublin

Tue 9/8

11:30 am-10:37 pm

1 stop19h 07m

$852

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 9/8

7:00 am-9:45 am

1 stop18h 45m

Dublin

Tue 9/15

9:20 am-10:59 pm

2 stops45h 39m

$853

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 8/26

7:00 am-9:45 am

1 stop18h 45m

Dublin

Wed 9/9

9:20 am-6:11 pm

2 stops40h 51m

$857
Quickest round-trip

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 9/2

11:59 pm-9:00 am

1 stop25h 01m

Dublin

Fri 9/11

11:30 am-8:57 pm

1 stop17h 27m

$858

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 8/26

7:00 am-7:45 am

2 stops16h 45m

Dublin

Wed 9/9

9:20 am-6:11 pm

2 stops40h 51m

$861

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 9/2

5:00 am-7:30 am

2 stops18h 30m

Dublin

Fri 9/11

9:20 am-8:01 pm

2 stops42h 41m

$862

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 9/8

5:00 am-7:45 am

2 stops18h 45m

Dublin

Tue 9/15

9:20 am-12:12 pm

2 stops34h 52m

$865

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Dublin from

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

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

The cheapest day to depart from Ontario to Dublin is on a Wednesday. Travelers who choose to depart for Dublin on a Wednesday will often find tickets for as low as $810. Flights from Ontario to Dublin on a Friday will generally be more expensive and average around $918. 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 $865.

Can stopping save me money on Ontario to Dublin flights?

You could potentially save up to 50% 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

Fastest flight time

15h 28m

Direct flights

None
The fastest flight from Ontario to Dublin takes 15h 28m
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 15h 28m 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?

  • 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?

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 AirlinesPriceFrom $728Free CancellationRating
7.1
11,847 reviews
Search American Airlines flights

Traveling to a place near Dublin?

Book flights to Dublin if you plan to visit one of these locations
Kilkenny
Swords
Athlone
Malahide
Kildare
Mullingar
Wicklow
Bray
Drogheda
Portmarnock
Dundalk
Leixlip
Arklow
Castleknock
Carlingford
Naas
Cavan
Maynooth
Slane
Thurles

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.

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