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Flights to Ontario

€384 Cheap flights to Ontario

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight to Ontario departing on 26/2. 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

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Find the cheapest flights from Ireland to Ontario

Cheap return flights

Enter your travel dates to find the best prices.
British Airways Logo
08:50 - 23:58
DUB
-
ONT
23h 08m2 stops
British Airways Logo
06:10 - 19:40
ONT
-
DUB
29h 30m2 stops
€384British Airways
Thu, 26 Feb - Mon, 2 Mar
British Airways Logo
08:50 - 22:49
DUB
-
ONT
21h 59m2 stops
British Airways Logo
15:19 - 17:05
ONT
-
DUB
17h 46m2 stops
€385British Airways
Thu, 26 Feb - Mon, 2 Mar
Multiple Airlines Logo
11:45 - 17:36
DUB
-
ONT
13h 51m1 stop
Multiple Airlines Logo
12:50 - 09:45
ONT
-
DUB
12h 55m1 stop
€474Multiple Airlines
Fri, 29 May - Fri, 12 Jun
Iberia Logo
13:45 - 21:56
DUB
-
ONT
16h 11m1 stop
Iberia Logo
11:01 - 09:45
ONT
-
DUB
14h 44m1 stop
€475Iberia
Thu, 7 May - Thu, 14 May
American Airlines Logo
10:30 - 22:49
DUB
-
ONT
20h 19m2 stops
American Airlines Logo
06:10 - 09:50
ONT
-
DUB
19h 40m2 stops
€504American Airlines
Thu, 26 Feb - Mon, 2 Mar
KLM Logo
17:15 - 16:12
DUB
-
ONT
30h 57m2 stops
KLM Logo
22:30 - 08:05
ONT
-
DUB
25h 35m2 stops
€568KLM
Thu, 8 Jan - Mon, 12 Jan
Multiple Airlines Logo
12:40 - 19:48
DUB
-
ONT
15h 08m1 stop
Multiple Airlines Logo
12:50 - 09:45
ONT
-
DUB
12h 55m1 stop
€576Multiple Airlines
Tue, 16 Jun - Tue, 30 Jun
United Airlines Logo
10:40 - 20:58
DUB
-
ONT
18h 18m2 stops
United Airlines Logo
08:00 - 07:30
ONT
-
DUB
15h 30m2 stops
€596United Airlines
Tue, 20 Jan - Tue, 27 Jan
American Airlines Logo
11:55 - 22:48
ORK
-
ONT
18h 53m2 stops
American Airlines Logo
07:16 - 11:10
ONT
-
ORK
43h 54m2 stops
€642American Airlines
Sat, 24 Jan - Tue, 27 Jan
United Airlines Logo
09:30 - 11:18
DUB
-
ONT
33h 48m3 stops
United Airlines Logo
06:00 - 07:30
ONT
-
DUB
17h 30m2 stops
€646United Airlines
Thu, 8 Jan - Mon, 12 Jan

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 24 December 2025.
Use the filters below to find and compare flights to Ontario that are best for you.

Fly from

Route

Depart

Return

Price

DublinOntario

DUB - ONT

DUBONT

Dublin

Thu 26/2

08:50-23:58

2 stops23h 08m

Ontario

Mon 2/3

06:10-19:40

2 stops29h 30m

€384

DublinOntario

DUB - ONT

DUBONT

Dublin

Thu 26/2

08:50-22:49

2 stops21h 59m

Ontario

Mon 2/3

15:19-17:05

2 stops17h 46m

€385

DublinOntario

DUB - ONT

DUBONT

Dublin

Fri 29/5

11:45-17:36

1 stop13h 51m

Ontario

Fri 12/6

12:50-09:45

1 stop12h 55m

€474

DublinOntario

DUB - ONT

DUBONT

Dublin

Thu 7/5

13:45-21:56

1 stop16h 11m

Ontario

Thu 14/5

11:01-09:45

1 stop14h 44m

€475

DublinOntario

DUB - ONT

DUBONT

Dublin

Thu 26/2

10:30-22:49

2 stops20h 19m

Ontario

Mon 2/3

06:10-09:50

2 stops19h 40m

€504

DublinOntario

DUB - ONT

DUBONT

Dublin

Thu 8/1

17:15-16:12

2 stops30h 57m

Ontario

Mon 12/1

22:30-08:05

2 stops25h 35m

€568

DublinOntario

DUB - ONT

DUBONT

Dublin

Tue 16/6

12:40-19:48

1 stop15h 08m

Ontario

Tue 30/6

12:50-09:45

1 stop12h 55m

€576

DublinOntario

DUB - ONT

DUBONT

Dublin

Tue 20/1

10:40-20:58

2 stops18h 18m

Ontario

Tue 27/1

08:00-07:30

2 stops15h 30m

€596

CorkOntario

ORK - ONT

ORKONT

Cork

Sat 24/1

11:55-22:48

2 stops18h 53m

Ontario

Tue 27/1

07:16-11:10

2 stops43h 54m

€642

DublinOntario

DUB - ONT

DUBONT

Dublin

Thu 8/1

09:30-11:18

3 stops33h 48m

Ontario

Mon 12/1

06:00-07:30

2 stops17h 30m

€646

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 takes 11h on average. On the other hand, flying from Cork to Los Angeles takes 15h 40m 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

€493

Best Round-Trip Price

€384

Fastest flight time

18h 24m
The best one-way flight price to Ontario from Ireland in the last 72 hours is €493 (Dublin to Ontario).
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The best round-trip flight price to Ontario from Ireland in the last 72 hours is €384 (Dublin to Ontario).
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The fastest flight to Ontario from Ireland takes 18h 24m (Dublin to Ontario).
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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 €116 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.
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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 €454
Cork to Ontario Flightsfrom €829