Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from Dublin to Ontario from $512

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Dublin to Ontario departing on 6/2. 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

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 Dublin to Ontario

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
9:30 am - 10:36 pm
DUB
-
ONT
21h 06m
1 stop
Multiple Airlines Logo
2:08 pm - 4:20 pm
ONT
-
DUB
18h 12m
2 stops
$539Multiple Airlines
Thu, Apr 30 - Sun, May 3
Iberia Logo
9:30 am - 8:54 pm
DUB
-
ONT
19h 24m
1 stop
Iberia Logo
10:59 am - 9:45 am
ONT
-
DUB
14h 46m
1 stop
$544Iberia
Tue, Apr 14 - Wed, Apr 22
Iberia Logo
9:30 am - 10:30 pm
DUB
-
ONT
21h 00m
1 stop
Iberia Logo
10:54 am - 9:45 am
ONT
-
DUB
14h 51m
1 stop
$549Iberia
Wed, Apr 1 - Sat, Apr 18
Multiple Airlines Logo
10:30 am - 11:46 pm
DUB
-
ONT
21h 16m
2 stops
Multiple Airlines Logo
10:59 am - 9:45 am
ONT
-
DUB
14h 46m
1 stop
$552Multiple Airlines
Thu, Apr 23 - Mon, Apr 27
American Airlines Logo
11:30 am - 1:48 pm
DUB
-
ONT
33h 18m
2 stops
American Airlines Logo
6:00 am - 8:40 am
ONT
-
DUB
19h 40m
2 stops
$556American Airlines
Wed, Mar 18 - Sun, Mar 22
American Airlines Logo
9:30 am - 6:30 pm
DUB
-
ONT
17h 00m
2 stops
American Airlines Logo
6:15 am - 6:30 am
ONT
-
DUB
16h 15m
2 stops
$561American Airlines
Mon, Apr 27 - Mon, May 4
American Airlines Logo
11:45 am - 9:24 pm
DUB
-
ONT
17h 39m
1 stop
American Airlines Logo
10:55 am - 9:45 am
ONT
-
DUB
14h 50m
1 stop
$562American Airlines
Fri, Apr 3 - Sun, Apr 19
British Airways Logo
8:20 pm - 4:22 pm
DUB
-
ONT
28h 02m
2 stops
British Airways Logo
12:19 pm - 7:35 pm
ONT
-
DUB
23h 16m
2 stops
$567British Airways
Thu, Apr 23 - Mon, Apr 27
Iberia Logo
9:30 am - 10:36 pm
DUB
-
ONT
21h 06m
1 stop
Iberia Logo
2:08 pm - 9:45 am
ONT
-
DUB
35h 37m
1 stop
$570Iberia
Wed, Apr 29 - Wed, May 6
American Airlines Logo
9:30 am - 10:09 am
DUB
-
ONT
32h 39m
1 stop
American Airlines Logo
10:59 am - 12:05 pm
ONT
-
DUB
17h 06m
2 stops
$572American Airlines
Sun, Apr 19 - Sun, Apr 26

American Airlines flights from Dublin to Ontario

Our best American Airlines deals on Dublin to Ontario flight tickets
American Airlines
Mar 18
DUB11:30 amDublin
33h 18m
2 stops
ONT1:48 pmOntario
Mar 22
ONT6:00 amOntario
19h 40m
2 stops
DUB8:40 amDublin
$556
American Airlines
Apr 27
DUB9:30 amDublin
17h 00m
2 stops
ONT6:30 pmOntario
May 4
ONT6:15 amOntario
16h 15m
2 stops
DUB6:30 amDublin
$561
American Airlines
Apr 3
DUB11:45 amDublin
17h 39m
1 stop
ONT9:24 pmOntario
Apr 19
ONT10:55 amOntario
14h 50m
1 stop
DUB9:45 amDublin
$562

United Airlines flights from Dublin to Ontario

Our best United Airlines deals on Dublin to Ontario flight tickets
United Airlines
Apr 27
DUB9:50 amDublin
20h 41m
2 stops
ONT10:31 pmOntario
May 6
ONT7:00 amOntario
16h 20m
2 stops
DUB7:20 amDublin
$758
United Airlines
Apr 30
DUB12:30 pmDublin
18h 05m
2 stops
ONT10:35 pmOntario
May 5
ONT7:00 amOntario
16h 20m
2 stops
DUB7:20 amDublin
$761
United Airlines
Apr 12
DUB11:35 amDublin
42h 15m
2 stops
ONT9:50 pmOntario
Apr 26
ONT6:05 amOntario
17h 25m
2 stops
DUB7:30 amDublin
$796

momondo Fare Finder

 
Customize your flight search to find flights from Dublin to Ontario 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 7, 2026.
Use the filters below to find and compare flights from Dublin to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DublinOntario

DUB - ONT

DUBONT

Dublin

Thu 4/30

9:30 am-10:36 pm

1 stop21h 06m

Ontario

Sun 5/3

2:08 pm-4:20 pm

2 stops18h 12m

$539

DublinOntario

DUB - ONT

DUBONT

Dublin

Tue 4/14

9:30 am-8:54 pm

1 stop19h 24m

Ontario

Wed 4/22

10:59 am-9:45 am

1 stop14h 46m

$544

DublinOntario

DUB - ONT

DUBONT

Dublin

Wed 4/1

9:30 am-10:30 pm

1 stop21h 00m

Ontario

Sat 4/18

10:54 am-9:45 am

1 stop14h 51m

$549

DublinOntario

DUB - ONT

DUBONT

Dublin

Thu 4/23

10:30 am-11:46 pm

2 stops21h 16m

Ontario

Mon 4/27

10:59 am-9:45 am

1 stop14h 46m

$552

DublinOntario

DUB - ONT

DUBONT

Dublin

Wed 3/18

11:30 am-1:48 pm

2 stops33h 18m

Ontario

Sun 3/22

6:00 am-8:40 am

2 stops19h 40m

$556

DublinOntario

DUB - ONT

DUBONT

Dublin

Mon 4/27

9:30 am-6:30 pm

2 stops17h 00m

Ontario

Mon 5/4

6:15 am-6:30 am

2 stops16h 15m

$561
Quickest round-trip

DublinOntario

DUB - ONT

DUBONT

Dublin

Fri 4/3

11:45 am-9:24 pm

1 stop17h 39m

Ontario

Sun 4/19

10:55 am-9:45 am

1 stop14h 50m

$562

DublinOntario

DUB - ONT

DUBONT

Dublin

Thu 4/23

8:20 pm-4:22 pm

2 stops28h 02m

Ontario

Mon 4/27

12:19 pm-7:35 pm

2 stops23h 16m

$567

DublinOntario

DUB - ONT

DUBONT

Dublin

Wed 4/29

9:30 am-10:36 pm

1 stop21h 06m

Ontario

Wed 5/6

2:08 pm-9:45 am

1 stop35h 37m

$570

DublinOntario

DUB - ONT

DUBONT

Dublin

Sun 4/19

9:30 am-10:09 am

1 stop32h 39m

Ontario

Sun 4/26

10:59 am-12:05 pm

2 stops17h 06m

$572

Flights are sorted by cheapest round-trip flights first.

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

See travel insights to Ontario from

How to get the cheapest flight ticket from Dublin to Ontario

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 airline that flies from Dublin to Ontario?

JetBlue and Iberia are the most popular carriers operating from Dublin to Ontario

When to book flights from Dublin to Ontario

Are you open to changing your travel dates? Check out the ideal times to fly from Dublin to Ontario according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Dublin to Ontario (DUB to ONT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Dublin to Ontario

Fastest flight time

16h 29m

Direct flights

None
The fastest flight from Dublin to Ontario takes 16h 29m
There are no direct flights from Dublin to Ontario. There are no popular flight routes from Dublin to Ontario.
Search flight deals

  • How far is Dublin to Ontario by plane?

    Ontario is 5136.8 mi away from Dublin. By plane, this route typically takes 16h 29m.

  • When did momondo last update prices for flights from Dublin Airport to Ontario Airport?

    Prices for flights from Dublin Airport to Ontario Airport refresh daily.

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

  • What documentation or ID do you need to fly to Ontario Airport?

    The necessary travel and health documents for your Ontario Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from Dublin to Ontario?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Dublin to Ontario for you.

Can I find flights from Dublin to Ontario with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Dublin to Ontario flights to just show those with flexible booking policies.

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

momondo helps you find the best flight between Dublin and Ontario 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 Dublin to Ontario right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Dublin to Ontario 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 Ontario 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
Mon 4/6
Mon 4/13
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States