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Cheap flights from Ontario to Dublin from $389

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 7/15. 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
0 bags

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Find the cheapest flights from Ontario to Dublin

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
7:13 pm - 7:45 am
ONT
-
DUB
28h 32m
2 stops
Air Canada Logo
9:50 am - 12:12 pm
DUB
-
ONT
34h 22m
2 stops
$645Air Canada
Mon, Aug 17 - Wed, Sep 2
United Airlines Logo
7:00 am - 9:45 am
ONT
-
DUB
18h 45m
1 stop
United Airlines Logo
9:50 am - 6:19 pm
DUB
-
ONT
40h 29m
2 stops
$648United Airlines
Tue, Aug 18 - Tue, Sep 1
United Airlines Logo
7:00 am - 7:20 am
ONT
-
DUB
16h 20m
2 stops
United Airlines Logo
9:50 am - 6:19 pm
DUB
-
ONT
40h 29m
2 stops
$653United Airlines
Tue, Aug 18 - Tue, Sep 1
United Airlines Logo
7:13 pm - 7:45 am
ONT
-
DUB
28h 32m
3 stops
United Airlines Logo
9:20 am - 12:12 pm
DUB
-
ONT
34h 52m
2 stops
$657United Airlines
Sat, Aug 15 - Wed, Aug 26
United Airlines Logo
5:10 am - 7:30 am
ONT
-
DUB
18h 20m
2 stops
United Airlines Logo
9:50 am - 5:47 pm
DUB
-
ONT
39h 57m
2 stops
$658United Airlines
Mon, Mar 30 - Tue, Apr 7
United Airlines Logo
11:59 pm - 9:45 am
ONT
-
DUB
25h 46m
1 stop
United Airlines Logo
9:50 am - 5:47 pm
DUB
-
ONT
39h 57m
2 stops
$660United Airlines
Sat, Mar 28 - Tue, Apr 7
Lufthansa Logo
11:59 pm - 8:10 am
ONT
-
DUB
25h 11m
1 stop
Lufthansa Logo
11:35 am - 8:36 pm
DUB
-
ONT
17h 01m
2 stops
$663Lufthansa
Mon, Mar 23 - Wed, Apr 8
Lufthansa Logo
11:59 pm - 8:10 am
ONT
-
DUB
25h 11m
1 stop
Lufthansa Logo
11:35 am - 10:31 pm
DUB
-
ONT
18h 56m
1 stop
$670Lufthansa
Mon, Mar 23 - Wed, Apr 8
United Airlines Logo
6:45 pm - 7:20 am
ONT
-
DUB
52h 35m
2 stops
United Airlines Logo
9:50 am - 10:35 pm
DUB
-
ONT
44h 45m
2 stops
$671United Airlines
Fri, Apr 24 - Tue, May 12
United Airlines Logo
7:00 am - 9:45 am
ONT
-
DUB
18h 45m
1 stop
United Airlines Logo
9:50 am - 8:52 pm
DUB
-
ONT
43h 02m
2 stops
$674United Airlines
Tue, Aug 18 - Tue, Sep 1

Lufthansa flights from Ontario to Dublin

Our best Lufthansa deals on Ontario to Dublin flight tickets
Lufthansa
Mar 23
ONT11:59 pmOntario
25h 11m
1 stop
DUB8:10 amDublin
Apr 8
DUB11:35 amDublin
17h 01m
2 stops
ONT8:36 pmOntario
$663
Lufthansa
Mar 23
ONT11:59 pmOntario
25h 11m
1 stop
DUB8:10 amDublin
Apr 8
DUB11:35 amDublin
18h 56m
1 stop
ONT10:31 pmOntario
$670
Lufthansa
Mar 23
ONT11:59 pmOntario
25h 11m
1 stop
DUB8:10 amDublin
Apr 8
DUB12:30 pmDublin
18h 01m
2 stops
ONT10:31 pmOntario
$696

Air Canada flights from Ontario to Dublin

Our best Air Canada deals on Ontario to Dublin flight tickets
Air Canada
Aug 17
ONT7:13 pmOntario
28h 32m
2 stops
DUB7:45 amDublin
Sep 2
DUB9:50 amDublin
34h 22m
2 stops
ONT12:12 pmOntario
$645
Air Canada
Mar 24
ONT5:15 amOntario
17h 55m
2 stops
DUB6:10 amDublin
May 8
DUB9:50 amDublin
18h 46m
2 stops
ONT8:36 pmOntario
$677
Air Canada
May 5
ONT6:00 amOntario
17h 45m
2 stops
DUB7:45 amDublin
May 15
DUB9:50 amDublin
45h 09m
2 stops
ONT10:59 pmOntario
$688

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 March 6, 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

Mon 8/17

7:13 pm-7:45 am

2 stops28h 32m

Dublin

Wed 9/2

9:50 am-12:12 pm

2 stops34h 22m

$645

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 8/18

7:00 am-9:45 am

1 stop18h 45m

Dublin

Tue 9/1

9:50 am-6:19 pm

2 stops40h 29m

$648

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 8/18

7:00 am-7:20 am

2 stops16h 20m

Dublin

Tue 9/1

9:50 am-6:19 pm

2 stops40h 29m

$653

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Sat 8/15

7:13 pm-7:45 am

3 stops28h 32m

Dublin

Wed 8/26

9:20 am-12:12 pm

2 stops34h 52m

$657

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Mon 3/30

5:10 am-7:30 am

2 stops18h 20m

Dublin

Tue 4/7

9:50 am-5:47 pm

2 stops39h 57m

$658

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Sat 3/28

11:59 pm-9:45 am

1 stop25h 46m

Dublin

Tue 4/7

9:50 am-5:47 pm

2 stops39h 57m

$660
Quickest round-trip

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Mon 3/23

11:59 pm-8:10 am

1 stop25h 11m

Dublin

Wed 4/8

11:35 am-8:36 pm

2 stops17h 01m

$663

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Mon 3/23

11:59 pm-8:10 am

1 stop25h 11m

Dublin

Wed 4/8

11:35 am-10:31 pm

1 stop18h 56m

$670

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Fri 4/24

6:45 pm-7:20 am

2 stops52h 35m

Dublin

Tue 5/12

9:50 am-10:35 pm

2 stops44h 45m

$671

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 8/18

7:00 am-9:45 am

1 stop18h 45m

Dublin

Tue 9/1

9:50 am-8:52 pm

2 stops43h 02m

$674

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 $740. Flights from Ontario to Dublin on a Saturday will generally be more expensive and average around $855. 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 evening is the cheapest time of day to fly from Ontario to Dublin when you can find flight prices for as low as $779. Flying to Dublin in the evening is an ideal time because this is during off-peak travel hours. Flights in the afternoon are often more expensive with an average ticket price of $812.

Can stopping save me money on Ontario to Dublin flights?

You could potentially save up to 22% 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

12h 45m

Direct flights

None
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

  • 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?

  • 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 $683Free CancellationRating
7.1
11,393 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
Dundalk
Mullingar
Kildare
Wicklow
Bray
Drogheda
Portmarnock
Arklow
Castleknock
Malahide
Leixlip
Carlingford
Cavan
Maynooth
Naas
Thurles
Slane

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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