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Cheap flights from Ontario to Dublin from $505

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 8/25. 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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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.
United Airlines Logo
7:00 am - 9:45 am
ONT
-
DUB
18h 45m
1 stop
United Airlines Logo
9:20 am - 6:19 pm
DUB
-
ONT
40h 59m
2 stops
$848United Airlines
tir., sep. 1 - tir., sep. 8
Air Canada Logo
1:44 pm - 8:15 am
ONT
-
DUB
34h 31m
2 stops
Air Canada Logo
9:20 am - 12:38 pm
DUB
-
ONT
35h 18m
2 stops
$856Air Canada
tir., sep. 1 - tir., sep. 8
Multiple Airlines Logo
7:00 am - 8:15 am
ONT
-
DUB
17h 15m
2 stops
Multiple Airlines Logo
9:20 am - 12:38 pm
DUB
-
ONT
35h 18m
3 stops
$865Multiple Airlines
tir., sep. 1 - tir., sep. 8
JetBlue Logo
11:50 pm - 9:00 am
ONT
-
DUB
25h 10m
1 stop
JetBlue Logo
11:30 am - 8:13 pm
DUB
-
ONT
16h 43m
1 stop
$869JetBlue
man., sep. 7 - tor., sep. 17
United Airlines Logo
7:00 am - 9:45 am
ONT
-
DUB
18h 45m
1 stop
United Airlines Logo
9:20 am - 10:35 pm
DUB
-
ONT
21h 15m
2 stops
$876United Airlines
tir., maj 5 - ons., maj 13
Delta Logo
7:05 am - 8:45 am
ONT
-
DUB
17h 40m
1 stop
Delta Logo
11:00 am - 6:36 pm
DUB
-
ONT
15h 36m
1 stop
$880Delta
tir., maj 5 - tir., maj 12
United Airlines Logo
7:00 am - 7:20 am
ONT
-
DUB
16h 20m
2 stops
United Airlines Logo
9:20 am - 10:35 pm
DUB
-
ONT
21h 15m
2 stops
$881United Airlines
man., maj 4 - ons., maj 13
United Airlines Logo
7:00 am - 9:45 am
ONT
-
DUB
18h 45m
1 stop
United Airlines Logo
12:30 pm - 10:35 pm
DUB
-
ONT
18h 05m
2 stops
$884United Airlines
tir., maj 5 - tir., maj 12
Delta Logo
10:15 pm - 9:15 am
ONT
-
DUB
27h 00m
2 stops
Delta Logo
11:00 am - 6:36 pm
DUB
-
ONT
15h 36m
1 stop
$885Delta
man., maj 4 - tir., maj 12
Air Canada Logo
5:00 am - 7:45 am
ONT
-
DUB
18h 45m
2 stops
Air Canada Logo
9:50 am - 8:36 pm
DUB
-
ONT
42h 46m
2 stops
$886Air Canada
fre., maj 8 - tir., maj 12

JetBlue flights from Ontario to Dublin

Our best JetBlue deals on Ontario to Dublin flight tickets
JetBlue
Sep 7
ONT11:50 pmOntario
25h 10m
1 stop
DUB9:00 amDublin
Sep 17
DUB11:30 amDublin
16h 43m
1 stop
ONT8:13 pmOntario
$869
JetBlue
Aug 18
ONT11:50 pmOntario
25h 10m
1 stop
DUB9:00 amDublin
Sep 1
DUB11:30 amDublin
19h 05m
1 stop
ONT10:35 pmOntario
$903
JetBlue
Aug 18
ONT11:50 pmOntario
25h 10m
1 stop
DUB9:00 amDublin
Sep 1
DUB11:30 amDublin
19h 05m
1 stop
ONT10:35 pmOntario
$914

British Airways flights from Ontario to Dublin

Our best British Airways deals on Ontario to Dublin flight tickets
British Airways
May 5
ONT10:59 amOntario
19h 36m
2 stops
DUB2:35 pmDublin
May 12
DUB8:35 amDublin
22h 05m
2 stops
ONT10:40 pmOntario
$944
British Airways
Sep 7
ONT12:33 pmOntario
17h 57m
2 stops
DUB2:30 pmDublin
Sep 14
DUB8:30 amDublin
20h 38m
2 stops
ONT9:08 pmOntario
$977
British Airways
May 6
ONT7:30 amOntario
17h 30m
2 stops
DUB9:00 amDublin
May 13
DUB12:30 pmDublin
19h 16m
2 stops
ONT11:46 pmOntario
$1,086

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 april 24, 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

tir. 9/1

7:00 am-9:45 am

1 stop18h 45m

Dublin

tir. 9/8

9:20 am-6:19 pm

2 stops40h 59m

$848

OntarioDublin

ONT - DUB

ONTDUB

Ontario

tir. 9/1

1:44 pm-8:15 am

2 stops34h 31m

Dublin

tir. 9/8

9:20 am-12:38 pm

2 stops35h 18m

$856

OntarioDublin

ONT - DUB

ONTDUB

Ontario

tir. 9/1

7:00 am-8:15 am

2 stops17h 15m

Dublin

tir. 9/8

9:20 am-12:38 pm

3 stops35h 18m

$865

OntarioDublin

ONT - DUB

ONTDUB

Ontario

man. 9/7

11:50 pm-9:00 am

1 stop25h 10m

Dublin

tor. 9/17

11:30 am-8:13 pm

1 stop16h 43m

$869

OntarioDublin

ONT - DUB

ONTDUB

Ontario

tir. 5/5

7:00 am-9:45 am

1 stop18h 45m

Dublin

ons. 5/13

9:20 am-10:35 pm

2 stops21h 15m

$876
Quickest round-trip

OntarioDublin

ONT - DUB

ONTDUB

Ontario

tir. 5/5

7:05 am-8:45 am

1 stop17h 40m

Dublin

tir. 5/12

11:00 am-6:36 pm

1 stop15h 36m

$880

OntarioDublin

ONT - DUB

ONTDUB

Ontario

man. 5/4

7:00 am-7:20 am

2 stops16h 20m

Dublin

ons. 5/13

9:20 am-10:35 pm

2 stops21h 15m

$881

OntarioDublin

ONT - DUB

ONTDUB

Ontario

tir. 5/5

7:00 am-9:45 am

1 stop18h 45m

Dublin

tir. 5/12

12:30 pm-10:35 pm

2 stops18h 05m

$884

OntarioDublin

ONT - DUB

ONTDUB

Ontario

man. 5/4

10:15 pm-9:15 am

2 stops27h 00m

Dublin

tir. 5/12

11:00 am-6:36 pm

1 stop15h 36m

$885

OntarioDublin

ONT - DUB

ONTDUB

Ontario

fre. 5/8

5:00 am-7:45 am

2 stops18h 45m

Dublin

tir. 5/12

9:50 am-8:36 pm

2 stops42h 46m

$886

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 $744. Flights from Ontario to Dublin on a Saturday will generally be more expensive and average around $867. 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 $797. 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 9% 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

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?

  • 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
11,666 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
Bray
Kildare
Mullingar
Wicklow
Drogheda
Portmarnock
Arklow
Castleknock
Malahide
Leixlip
Carlingford
Cavan
Maynooth
Naas
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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