How long is the flight to Ontario?

The duration of your flight to Ontario depends on your departure and arrival airports. Obviously any flights that include a layover will also be longer. The most popular routes to Ontario on KAYAK are from Dublin , which takes 11h 00m, Shannon , which takes 15h 30m, Milltown (Kerry) , which takes 16h 05m, and Cork , which takes 20h 45m.

How long is the flight to Ontario?

The duration of your flight to Ontario depends on your departure and arrival airports. Obviously any flights that include a layover will also be longer. The most popular routes to Ontario on KAYAK are from Dublin , which takes 11h 00m, Shannon , which takes 15h 30m, Milltown (Kerry) , which takes 16h 05m, and Cork , which takes 20h 45m.

How far is Ontario Airport from central Ontario?

The city centre of Ontario is 5 km from Ontario. Visit our flight page for the latest deals!>/a>

What is the name of Ontario’s airport?

When flying to Ontario, you'll arrive at Ontario Airport (ONT). The airport is also known as Ontario or Ontario Intl. Visit our flight page for the latest deals!>/a>

How does KAYAK find such low prices on flights to Ontario?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights to Ontario. Visit our flight page for the latest deals!>/a>

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket to Ontario?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario is likely to change within 7 days, so travellers know whether to wait or book now. Visit our flight page for the latest deals!>/a>

What is the Hacker Fare option on flights to Ontario?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ontario with an airline and back with another airline. Visit our flight page for the latest deals!>/a>

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to Ontario?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. Visit our flight page for the latest deals!>/a>

€433 CHEAP FLIGHTS to Ontario in 2026

ONT

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Cheapest return fare

€433

American Airlines

Fri 27/2Mon 2/3

DUB - ONT • 2 stops

Cheapest one-way flight

€467

JetBlue

Fri 15/5

DUB - ONT • 1 stop

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We hope you love your trip to Ontario!

Flight Deals

Cheap Flights to Ontario

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

All Flight Deals

Recent return flight deals to Ontario

Fri, 27 Feb - Mon, 2 Mar

11:30 - 23:59

DUB

ONT

20h 29m

2 stops

19:05 - 08:40

ONT

DUB

29h 35m

2 stops

€433American Airlines

Fri, 13 Feb - Tue, 17 Feb

11:30 - 22:29

DUB

ONT

18h 59m

2 stops

07:00 - 08:40

ONT

DUB

17h 40m

2 stops

€434American Airlines

Tue, 14 Apr - Mon, 20 Apr

09:30 - 20:54

DUB

ONT

19h 24m

1 stop

10:59 - 09:45

ONT

DUB

14h 46m

1 stop

€464Iberia

Thu, 16 Apr - Wed, 13 May

09:30 - 22:35

DUB

ONT

21h 05m

1 stop

10:59 - 09:45

ONT

DUB

14h 46m

1 stop

€495Iberia

Wed, 11 Feb - Sun, 15 Feb

09:00 - 20:58

DUB

ONT

19h 58m

2 stops

05:00 - 07:30

ONT

DUB

18h 30m

2 stops

€595United Airlines

Thu, 26 Feb - Thu, 5 Mar

17:15 - 16:02

DUB

ONT

30h 47m

2 stops

06:00 - 07:45

ONT

DUB

17h 45m

2 stops

€655Multiple Airlines

Thu, 26 Feb - Thu, 5 Mar

09:45 - 21:05

DUB

ONT

19h 20m

1 stop

06:00 - 07:45

ONT

DUB

17h 45m

2 stops

€664KLM

Thu, 2 Jul - Thu, 13 Aug

09:20 - 22:26

DUB

ONT

21h 06m

2 stops

07:00 - 07:20

ONT

DUB

16h 20m

2 stops

€843United Airlines

Fri, 3 Jul - Thu, 13 Aug

13:35 - 12:33

DUB

ONT

30h 58m

2 stops

05:00 - 07:30

ONT

DUB

18h 30m

2 stops

€846United Airlines

Mon, 6 Jul - Sun, 16 Aug

11:00 - 22:09

DUB

ONT

19h 09m

1 stop

22:59 - 08:45

ONT

DUB

25h 46m

1 stop

€865Delta

Booking Insights

KAYAK's insights & trends for flights to Ontario

Get data-powered insights and trends into flights to Ontario to help you find the cheapest flights, the best time to fly and much more.

Airlines

The most popular airline among KAYAK users flying to Ontario is Aer Lingus, followed by British Airways and United Airlines.

Cheapest flight	€433

Flight from Dublin to Ontario

When to book flights to Ontario

Are your dates flexible? Find out the best times to travel to Ontario based on our flight data from the last year. Discover the cheapest month and even day to fly.

Estimated return price

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. The information is for flights to Ontario based on your location. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

How far is Ontario Airport from central Ontario?
The city centre of Ontario is 5 km from Ontario.
What is the name of Ontario’s airport?
When flying to Ontario, you'll arrive at Ontario Airport (ONT). The airport is also known as Ontario or Ontario Intl.
How does KAYAK find such low prices on flights to Ontario?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights to Ontario.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket to Ontario?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario is likely to change within 7 days, so travellers know whether to wait or book now.
What is the Hacker Fare option on flights to Ontario?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ontario with an airline and back with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to Ontario?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Enter your preferred departure airport and travel dates into the search form above to unlock the latest Ontario flight deals.

Everything you need to know for your flight to Ontario

Airports

Cabin class

Complete your trip

Flights to other cities

Origins

Other airports

Return flight deals

Information on the airport you'll fly into in Ontario

Ontario (ONT)

ONT

€433 Find Cheap Flights to Ontario

KAYAK searches hundreds of travel sites at once for deals on flights to Ontario

Everything you should know

Cheap Flights to Ontario

Recent return flight deals to Ontario

Recent one-way flight deals to Ontario

Recent last minute flight deals to Ontario

All return flight deals to Ontario

KAYAK's insights & trends for flights to Ontario

Get data-powered insights and trends into flights to Ontario to help you find the cheapest flights, the best time to fly and much more.

What are the most popular airlines flying to Ontario?

The most popular airline among KAYAK users flying to Ontario is Aer Lingus, followed by British Airways and United Airlines.

How long is the flight to Ontario?

Good to know – Book Cheap Ontario Plane Tickets

When to book flights to Ontario

FAQs - booking Ontario flights

How far is Ontario Airport from central Ontario?

The city centre of Ontario is 5 km from Ontario.

What is the name of Ontario’s airport?

When flying to Ontario, you'll arrive at Ontario Airport (ONT). The airport is also known as Ontario or Ontario Intl.

How does KAYAK find such low prices on flights to Ontario?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights to Ontario.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket to Ontario?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario is likely to change within 7 days, so travellers know whether to wait or book now.

What is the Hacker Fare option on flights to Ontario?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ontario with an airline and back with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to Ontario?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to Ontario

Everything you need to know for your flight to Ontario

Information on the airport you'll fly into in Ontario

Cabin class types available on flights to Ontario

Complete your trip to Ontario with a hotel stay or car hire

Flights to other popular destinations

Flights from local origins to Ontario

Choose which airport to fly into in Ontario

Find deals for your return flight