Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Ontario to Dublin from $393

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 10/20. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Ontario to Dublin

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
6:05 am - 9:55 amONT-DUB
20h 50m2 stops
United Airlines Logo
9:00 am - 8:44 pmDUB-ONT
19h 44m2 stops
$637United Airlines
Find Deal
Mon, Oct 27 - Wed, Nov 12
United Airlines Logo
7:00 am - 8:10 amONT-DUB
18h 10m1 stop
United Airlines Logo
10:40 am - 10:31 pmDUB-ONT
19h 51m1 stop
$642United Airlines
Find Deal
Mon, Oct 27 - Wed, Nov 12
KLM Logo
11:36 am - 8:45 amONT-DUB
13h 09m1 stop
KLM Logo
9:45 am - 7:19 pmDUB-ONT
17h 34m1 stop
$644KLM
Find Deal
Mon, Oct 20 - Wed, Nov 5
KLM Logo
11:36 am - 7:45 amONT-DUB
13h 09m1 stop
KLM Logo
5:55 am - 7:19 pmDUB-ONT
21h 24m2 stops
$651KLM
Find Deal
Wed, Oct 29 - Thu, Nov 6
Multiple Airlines Logo
7:05 am - 7:45 amONT-DUB
16h 40m1 stop
Multiple Airlines Logo
9:45 am - 7:42 pmDUB-ONT
17h 57m1 stop
$653Multiple Airlines
Find Deal
Wed, Nov 5 - Wed, Nov 12
Delta Logo
6:00 am - 7:45 amONT-DUB
18h 45m2 stops
Delta Logo
5:55 am - 7:19 pmDUB-ONT
21h 24m2 stops
$655Delta
Find Deal
Wed, Oct 29 - Thu, Nov 6
Delta Logo
7:35 am - 3:45 pmONT-DUB
25h 10m2 stops
Delta Logo
5:55 am - 10:22 pmDUB-ONT
24h 27m2 stops
$656Delta
Find Deal
Wed, Oct 29 - Thu, Nov 6
Iberia Logo
12:47 pm - 9:45 amONT-DUB
12h 58m1 stop
Iberia Logo
12:55 pm - 10:42 pmDUB-ONT
16h 47m1 stop
$771Iberia
Find Deal
Fri, Oct 24 - Sat, Nov 1
Iberia Logo
7:03 am - 7:10 amONT-DUB
16h 07m1 stop
Iberia Logo
12:55 pm - 10:28 pmDUB-ONT
17h 33m1 stop
$853Iberia
Find Deal
Sun, Dec 7 - Fri, Dec 12
American Airlines Logo
6:46 am - 3:45 pmONT-DUB
24h 59m2 stops
American Airlines Logo
1:25 pm - 11:43 pmDUB-ONT
18h 18m2 stops
$885American Airlines
Find Deal
Wed, Apr 1 - Sun, Apr 5

British Airways flights from Ontario to Dublin

Our best British Airways deals on Ontario to Dublin flight tickets
British Airways
Feb 11
ONT3:09 pmOntario
16h 31m
2 stops
DUB3:40 pmDublin
Feb 18
DUB12:05 pmDublin
17h 52m
2 stops
ONT9:57 pmOntario
$837
Find similar
British Airways
Oct 28
ONT10:57 amOntario
16h 18m
2 stops
DUB10:15 amDublin
Nov 3
DUB12:05 pmDublin
18h 24m
2 stops
ONT10:29 pmOntario
$869
Find similar
British Airways
Oct 20
ONT4:49 pmOntario
14h 56m
2 stops
DUB3:45 pmDublin
Oct 28
DUB12:05 pmDublin
17h 37m
2 stops
ONT10:42 pmOntario
$1,204
Find similar

Delta flights from Ontario to Dublin

Our best Delta deals on Ontario to Dublin flight tickets
Delta
Oct 29
ONT6:00 amOntario
18h 45m
2 stops
DUB7:45 amDublin
Nov 6
DUB5:55 amDublin
21h 24m
2 stops
ONT7:19 pmOntario
$655
Find similar
Delta
Oct 29
ONT7:35 amOntario
25h 10m
2 stops
DUB3:45 pmDublin
Nov 6
DUB5:55 amDublin
24h 27m
2 stops
ONT10:22 pmOntario
$656
Find similar
Delta
Oct 24
ONT11:36 amOntario
13h 09m
1 stop
DUB8:45 amDublin
Oct 31
DUB1:25 pmDublin
38h 55m
2 stops
ONT9:20 pmOntario
$717
Find similar

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 October 8, 2025.
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

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Mon 10/27

6:05 am-9:55 am

2 stops20h 50m

Dublin

Wed 11/12

9:00 am-8:44 pm

2 stops19h 44m

$637

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Mon 10/27

7:00 am-8:10 am

1 stop18h 10m

Dublin

Wed 11/12

10:40 am-10:31 pm

1 stop19h 51m

$642

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Mon 10/20

11:36 am-8:45 am

1 stop13h 09m

Dublin

Wed 11/5

9:45 am-7:19 pm

1 stop17h 34m

$644

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 10/29

11:36 am-7:45 am

1 stop13h 09m

Dublin

Thu 11/6

5:55 am-7:19 pm

2 stops21h 24m

$651

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 11/5

7:05 am-7:45 am

1 stop16h 40m

Dublin

Wed 11/12

9:45 am-7:42 pm

1 stop17h 57m

$653

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 10/29

6:00 am-7:45 am

2 stops18h 45m

Dublin

Thu 11/6

5:55 am-7:19 pm

2 stops21h 24m

$655

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 10/29

7:35 am-3:45 pm

2 stops25h 10m

Dublin

Thu 11/6

5:55 am-10:22 pm

2 stops24h 27m

$656

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Fri 10/24

12:47 pm-9:45 am

1 stop12h 58m

Dublin

Sat 11/1

12:55 pm-10:42 pm

1 stop16h 47m

$771

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Sun 12/7

7:03 am-7:10 am

1 stop16h 07m

Dublin

Fri 12/12

12:55 pm-10:28 pm

1 stop17h 33m

$853

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 4/1

6:46 am-3:45 pm

2 stops24h 59m

Dublin

Sun 4/5

1:25 pm-11:43 pm

2 stops18h 18m

$885

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 month to fly to Dublin?

In general, December is the cheapest month to fly from Ontario to Dublin. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $573. If you’re not able to fly to Dublin in December, then March is your next best option. Flight prices from Ontario to Dublin during March average around $607.

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 $724. Flights from Ontario to Dublin on a Saturday will generally be more expensive and average around $842. 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 $760. Flying to Dublin in the evening is an ideal time because this is during off-peak travel hours. Flights in the morning are often more expensive with an average ticket price of $849.

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

Direct flights

None
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 23m 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
DeltaPriceFrom $527Free CancellationRating
7.9
7,968 reviews
Search Delta flights
IberiaPriceFrom $547Free CancellationRating
7.0
2,980 reviews
Search Iberia flights
American AirlinesPriceFrom $623Free CancellationRating
7.2
11,041 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
Athlone
Swords
Dundalk
Malahide
Maynooth
Bray
Castleknock
Naas
Mullingar
Arklow
Cavan
Drogheda
Enniscorthy
Wicklow
Leixlip
Kildare
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.

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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Fri 11/7
Fri 11/14
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Ireland