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Cheap flights from Ontario to Dublin from €306

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 11/9. 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

Find the cheapest flights from Ontario to Dublin

Cheap return flights

Enter your travel dates to find the best prices.
KLM Logo
07:05 - 08:45ONT  Ontario-DUB Dublin
17h 40m1 stop Atlanta Hartsfield-Jackson
KLM Logo
11:10 - 22:43DUB  Dublin-ONT Ontario
19h 33m2 stops Amsterdam Schiphol Seattle/Tacoma Intl
€639KLM
Wed, 23 Sep - Wed, 7 Oct
KLM Logo
07:05 - 08:45ONT  Ontario-DUB Dublin
17h 40m1 stop Atlanta Hartsfield-Jackson
KLM Logo
11:00 - 20:25DUB  Dublin-ONT Ontario
17h 25m1 stop Atlanta Hartsfield-Jackson
€641KLM
Wed, 23 Sep - Wed, 7 Oct
KLM Logo
07:05 - 09:15ONT  Ontario-DUB Dublin
18h 10m2 stops Atlanta Hartsfield-Jackson New York John F Kennedy Intl
KLM Logo
08:55 - 22:43DUB  Dublin-ONT Ontario
21h 48m2 stops Amsterdam Schiphol Seattle/Tacoma Intl
€643KLM
Wed, 23 Sep - Wed, 7 Oct
JetBlue Logo
23:13 - 09:00ONT  Ontario-DUB Dublin
25h 47m1 stop New York John F Kennedy Intl
JetBlue Logo
11:30 - 20:57DUB  Dublin-ONT Ontario
17h 27m1 stop New York John F Kennedy Intl
€644JetBlue
Sat, 5 Sep - Wed, 16 Sep
JetBlue Logo
23:59 - 09:00ONT  Ontario-DUB Dublin
25h 01m1 stop New York John F Kennedy Intl
JetBlue Logo
11:30 - 22:37DUB  Dublin-ONT Ontario
19h 07m1 stop New York John F Kennedy Intl
€645JetBlue
Mon, 24 Aug - Wed, 2 Sep
JetBlue Logo
23:59 - 09:00ONT  Ontario-DUB Dublin
25h 01m1 stop New York John F Kennedy Intl
JetBlue Logo
11:30 - 20:57DUB  Dublin-ONT Ontario
17h 27m1 stop New York John F Kennedy Intl
€645JetBlue
Mon, 7 Sep - Fri, 11 Sep
Delta Logo
07:05 - 10:45ONT  Ontario-DUB Dublin
43h 40m2 stops Atlanta Hartsfield-Jackson Boston Logan Intl
Delta Logo
13:15 - 10:42DUB  Dublin-ONT Ontario
29h 27m2 stops New York John F Kennedy Intl Atlanta Hartsfield-Jackson
€654Delta
Sat, 29 Aug - Fri, 4 Sep
JetBlue Logo
22:39 - 09:00ONT  Ontario-DUB Dublin
26h 21m1 stop New York John F Kennedy Intl
JetBlue Logo
11:30 - 21:00DUB  Dublin-ONT Ontario
17h 30m1 stop New York John F Kennedy Intl
€658JetBlue
Wed, 23 Sep - Wed, 7 Oct
JetBlue Logo
22:39 - 09:00ONT  Ontario-DUB Dublin
26h 21m1 stop New York John F Kennedy Intl
JetBlue Logo
11:30 - 20:57DUB  Dublin-ONT Ontario
17h 27m1 stop New York John F Kennedy Intl
€659JetBlue
Fri, 18 Sep - Sat, 26 Sep
JetBlue Logo
22:39 - 09:00ONT  Ontario-DUB Dublin
26h 21m1 stop New York John F Kennedy Intl
JetBlue Logo
11:30 - 20:57DUB  Dublin-ONT Ontario
17h 27m1 stop New York John F Kennedy Intl
€665JetBlue
Fri, 11 Sep - Wed, 16 Sep

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JetBlue flights from Ontario to Dublin

Our best JetBlue deals on Ontario to Dublin flight tickets
JetBlue
5 Sept
ONT23:13Ontario
25h 47m
1 stop
DUB09:00Dublin
16 Sept
DUB11:30Dublin
17h 27m
1 stop
ONT20:57Ontario
€644
JetBlue
24 Aug
ONT23:59Ontario
25h 01m
1 stop
DUB09:00Dublin
2 Sept
DUB11:30Dublin
19h 07m
1 stop
ONT22:37Ontario
€645
JetBlue
7 Sept
ONT23:59Ontario
25h 01m
1 stop
DUB09:00Dublin
11 Sept
DUB11:30Dublin
17h 27m
1 stop
ONT20:57Ontario
€645

United Airlines flights from Ontario to Dublin

Our best United Airlines deals on Ontario to Dublin flight tickets
United Airlines
6 Sept
ONT07:00Ontario
18h 45m
1 stop
DUB09:45Dublin
19 Sept
DUB09:20Dublin
19h 33m
2 stops
ONT20:53Ontario
€795
United Airlines
28 Oct
ONT07:00Ontario
18h 10m
1 stop
DUB08:10Dublin
1 Nov
DUB09:00Dublin
19h 51m
2 stops
ONT20:51Ontario
€798
United Airlines
6 Nov
ONT07:00Ontario
17h 10m
1 stop
DUB08:10Dublin
13 Nov
DUB10:40Dublin
16h 07m
1 stop
ONT18:47Ontario
€801

momondo Fare Finder

 
Customise 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 13,528 searches. Data last updated 8 August 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 return flight

OntarioDublin

ONT Ontario - DUB Dublin

ONTDUB

Ontario

Wed 23/9

07:05-08:45

1 stop17h 40m

Dublin

Wed 7/10

11:10-22:43

2 stops19h 33m

€638
Fastest return journey

OntarioDublin

ONT Ontario - DUB Dublin

ONTDUB

Ontario

Wed 23/9

07:05-08:45

1 stop17h 40m

Dublin

Wed 7/10

11:00-20:25

1 stop17h 25m

€641

OntarioDublin

ONT Ontario - DUB Dublin

ONTDUB

Ontario

Wed 23/9

07:05-09:15

2 stops18h 10m

Dublin

Wed 7/10

08:55-22:43

2 stops21h 48m

€643

OntarioDublin

ONT Ontario - DUB Dublin

ONTDUB

Ontario

Sat 5/9

23:13-09:00

1 stop25h 47m

Dublin

Wed 16/9

11:30-20:57

1 stop17h 27m

€644

OntarioDublin

ONT Ontario - DUB Dublin

ONTDUB

Ontario

Mon 24/8

23:59-09:00

1 stop25h 01m

Dublin

Wed 2/9

11:30-22:37

1 stop19h 07m

€645

OntarioDublin

ONT Ontario - DUB Dublin

ONTDUB

Ontario

Mon 7/9

23:59-09:00

1 stop25h 01m

Dublin

Fri 11/9

11:30-20:57

1 stop17h 27m

€645

OntarioDublin

ONT Ontario - DUB Dublin

ONTDUB

Ontario

Sat 29/8

07:05-10:45

2 stops43h 40m

Dublin

Fri 4/9

13:15-10:42

2 stops29h 27m

€654

OntarioDublin

ONT Ontario - DUB Dublin

ONTDUB

Ontario

Wed 23/9

22:39-09:00

1 stop26h 21m

Dublin

Wed 7/10

11:30-21:00

1 stop17h 30m

€658

OntarioDublin

ONT Ontario - DUB Dublin

ONTDUB

Ontario

Fri 18/9

22:39-09:00

1 stop26h 21m

Dublin

Sat 26/9

11:30-20:57

1 stop17h 27m

€659

OntarioDublin

ONT Ontario - DUB Dublin

ONTDUB

Ontario

Fri 11/9

22:39-09:00

1 stop26h 21m

Dublin

Wed 16/9

11:30-20:57

1 stop17h 27m

€664

Flights are sorted by cheapest return 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?

Our data shows that Friday is the least expensive day to fly to Dublin. Tickets to fly out on this day can be as low as €428. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around €691. These prices are subject to change though, so be sure to set up a Price Alert for flights to Dublin.

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 return 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

13h 08m

Direct flights

None
The fastest flight from Ontario to Dublin takes 13h 08m
There are no direct flights from Ontario to Dublin. There are no popular flight routes from Ontario to Dublin.
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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 8266.8 km. Typically, this will take 13h 08m 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 refresh daily.

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and stopovers. 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 licence 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.

Travelling to a place near Dublin?

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

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?

All flight searches from Ontario to Dublin on momondo can be filtered to show those which offer flexible booking policies.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Ontario to Dublin.

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

Yes momondo offers price alerts on flights to Dublin from Ontario. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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