Latest deals
Insights
When to book
FAQs
Price Alerts
Flights to Ontario

€331 Cheap flights to Ontario

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight to Ontario departing on 2/9. 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

Discover deals from 900+ travel sites with momondo.

Voted the Winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise 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 Ireland to Ontario

Cheap return flights

Enter your travel dates to find the best prices.
JetBlue Logo
11:30 - 22:35
DUB
-
ONT
19h 05m
1 stop
JetBlue Logo
23:24 - 09:00
ONT
-
DUB
25h 36m
1 stop
€580JetBlue
Thu, 20 Aug - Sat, 29 Aug
British Airways Logo
08:50 - 23:55
DUB
-
ONT
23h 05m
2 stops
British Airways Logo
14:56 - 19:40
ONT
-
DUB
20h 44m
2 stops
€603British Airways
Thu, 3 Dec - Sun, 6 Dec
Iberia Logo
13:00 - 23:06
DUB
-
ONT
17h 06m
1 stop
Iberia Logo
06:10 - 07:15
ONT
-
DUB
17h 05m
1 stop
€611Iberia
Thu, 29 Oct - Thu, 26 Nov
American Airlines Logo
12:40 - 18:57
DUB
-
ONT
14h 17m
1 stop
American Airlines Logo
10:25 - 07:15
ONT
-
DUB
13h 50m
1 stop
€614American Airlines
Wed, 21 Oct - Wed, 28 Oct
Iberia Logo
12:40 - 21:09
DUB
-
ONT
16h 29m
1 stop
Iberia Logo
12:37 - 09:45
ONT
-
DUB
13h 08m
1 stop
€614Iberia
Thu, 10 Sep - Tue, 29 Sep
KLM Logo
11:00 - 18:18
DUB
-
ONT
15h 18m
1 stop
KLM Logo
12:00 - 07:45
ONT
-
DUB
12h 45m
1 stop
€620KLM
Sat, 17 Oct - Mon, 26 Oct
Multiple Airlines Logo
11:00 - 19:57
DUB
-
ONT
16h 57m
1 stop
Multiple Airlines Logo
12:00 - 08:45
ONT
-
DUB
12h 45m
1 stop
€621Multiple Airlines
Wed, 30 Sep - Mon, 12 Oct
Multiple Airlines Logo
09:40 - 11:27
DUB
-
ONT
32h 47m
1 stop
Multiple Airlines Logo
07:00 - 09:00
ONT
-
DUB
18h 00m
2 stops
€636Multiple Airlines
Thu, 29 Oct - Thu, 26 Nov
Iberia Logo
13:00 - 23:06
DUB
-
ONT
17h 06m
1 stop
Iberia Logo
07:00 - 07:15
ONT
-
DUB
16h 15m
1 stop
€640Iberia
Fri, 30 Oct - Wed, 4 Nov
JetBlue Logo
11:30 - 22:35
DUB
-
ONT
19h 05m
1 stop
JetBlue Logo
23:50 - 09:00
ONT
-
DUB
25h 10m
1 stop
€641JetBlue
Fri, 14 Aug - Sun, 30 Aug

momondo Fare Finder

 
Locate flights to Ontario that fit your budget, with regularly updated fares and availability. In the last 7 days, momondo users made a total of 13,528 searches and data was last updated on 22 June 2026.
Use the filters below to find and compare flights to Ontario that are best for you.

Fly from

Route

Depart

Return

Price

Cheapest return flight

DublinOntario

DUB - ONT

DUBONT

Dublin

Thu 20/8

11:30-22:35

1 stop19h 05m

Ontario

Sat 29/8

23:24-09:00

1 stop25h 36m

€580

DublinOntario

DUB - ONT

DUBONT

Dublin

Thu 3/12

08:50-23:55

2 stops23h 05m

Ontario

Sun 6/12

14:56-19:40

2 stops20h 44m

€603

DublinOntario

DUB - ONT

DUBONT

Dublin

Thu 29/10

13:00-23:06

1 stop17h 06m

Ontario

Thu 26/11

06:10-07:15

1 stop17h 05m

€611

DublinOntario

DUB - ONT

DUBONT

Dublin

Wed 21/10

12:40-18:57

1 stop14h 17m

Ontario

Wed 28/10

10:25-07:15

1 stop13h 50m

€614

DublinOntario

DUB - ONT

DUBONT

Dublin

Thu 10/9

12:40-21:09

1 stop16h 29m

Ontario

Tue 29/9

12:37-09:45

1 stop13h 08m

€614
Fastest return journey

DublinOntario

DUB - ONT

DUBONT

Dublin

Sat 17/10

11:00-18:18

1 stop15h 18m

Ontario

Mon 26/10

12:00-07:45

1 stop12h 45m

€620

DublinOntario

DUB - ONT

DUBONT

Dublin

Wed 30/9

11:00-19:57

1 stop16h 57m

Ontario

Mon 12/10

12:00-08:45

1 stop12h 45m

€621

DublinOntario

DUB - ONT

DUBONT

Dublin

Thu 29/10

09:40-11:27

1 stop32h 47m

Ontario

Thu 26/11

07:00-09:00

2 stops18h 00m

€636

DublinOntario

DUB - ONT

DUBONT

Dublin

Fri 30/10

13:00-23:06

1 stop17h 06m

Ontario

Wed 4/11

07:00-07:15

1 stop16h 15m

€640

DublinOntario

DUB - ONT

DUBONT

Dublin

Fri 14/8

11:30-22:35

1 stop19h 05m

Ontario

Sun 30/8

23:50-09:00

1 stop25h 10m

€641

Flights are sorted by cheapest return flights first.

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

See travel insights to Ontario from

Ontario flights insights and trends

Explore insights for your Ontario flight to craft the best travel plan

How long does it take to fly to Ontario?

Flight times vary depending on what airport in Ireland you fly out of and what airport in Ontario you fly into. For example, flying from Dublin to Los Angeles Los Angeles takes 11h on average. On the other hand, flying from Cork to Los Angeles Los Angeles takes 23h on average. Keep in mind that it’s always quicker to opt for a non-stop flight, so be sure to check momondo to see if there are any available for your route.

Cheapest flights to Ontario

Find the cheapest flights to Ontario from your nearest city or airport

Cheap Ontario flight deals and tips

Summary info about Ontario flight prices, duration and airlines

Best One-Way Price

€331

Best Round-Trip Price

€580

Fastest flight time

19h 05m
The best one-way flight price to Ontario from Ireland in the last 5 days is €331 (Dublin to Ontario).
Search Deals
The best round-trip flight price to Ontario from Ireland in the last 5 days is €580 (Dublin to Ontario).
Search Deals
The fastest flight to Ontario from Ireland takes 19h 05m (Dublin to Ontario).
Search Deals

Frequently asked questions about flying to Ontario

Is there an alternative airport near Ontario?

Finding an alternative and possibly cheaper destination airport near Ontario is possible. If you are planning a flight to Ontario, consider booking flights to Ontario Airport (5 km from Ontario city centre), San Bernardino Int Airport (38 km from Ontario city centre), Santa Ana J. Wayne/Orange Cnty Airport (47 km from Ontario city centre), Long Beach Municipal Airport (54 km from Ontario city centre) or Burbank Bob Hope Airport (67 km from Ontario city centre).

Is there a cheaper alternative to flying into Ontario?

Burbank Bob Hope Airport has an average price of €333 per person and is typically the cheapest airport to fly into when visiting Ontario. This average price does vary based on departure city. Try momondo’s Airport-to-Airport Pricing Tool to find the cheapest flight.

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

Prices for flights to Ontario Airport are refreshed on a daily basis.

How old do you have to be to fly to Ontario 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 to Ontario Airport.

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

The travel and health documents required for your trip to Ontario Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s licence, and a passport valid for six-months after you plan to arrive at Ontario Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Why use momondo?

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

Finding the right flight to Ontario is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. These options can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Ontario quick and easy, saving you time and money.

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

momondo does allow users to show only those flights to Ontario which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights to Ontario?

Once you have performed a search for flights to Ontario, momondo helps you find the right flight by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes momondo offers price alerts on flights to 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.

An easier way to manage your Ontario trip

We make it super easy to schedule, organise 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
Wed 22/7
Wed 29/7
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Ontario

Popular Flights to Ontario

Popular routes according to searches in the past day on momondo
Dublin to Ontario Flightsfrom €800
Cork to Ontario Flightsfrom €861