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, Cork , which takes 13h 45m, Shannon , which takes 15h 30m, and Milltown (Kerry) , which takes 16h 05m.

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, Cork , which takes 13h 45m, Shannon , which takes 15h 30m, and Milltown (Kerry) , which takes 16h 05m.

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>

What is the cheapest time of day to fly to Ontario?

The cheapest time of day to fly to Ontario is generally in the morning, when flights cost €631 on average. The most expensive time of day to fly to Ontario is generally in the morning, which is peak travel time and where the average cost of a ticket is €631.

€488 CHEAP FLIGHTS to Ontario in 2025/26

ONT

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

...and more

Travellers love KAYAK

41,299,237 searches in the past 7 days on KAYAK

Track pricesNot ready to book? Create a price alert for when prices drop.

Free to useThere are no hidden charges or fees.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals

Cheap Flights to Ontario

Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights to Ontario that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

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, 7 Nov - Sat, 15 Nov

12:55 - 22:29DUB-ONT

17h 34m1 stop

07:00 - 07:10ONT-DUB

16h 10m1 stop

€488Iberia

Find Deal

Fri, 7 Nov - Sun, 23 Nov

12:55 - 22:29DUB-ONT

17h 34m1 stop

07:00 - 07:10ONT-DUB

16h 10m1 stop

€489Iberia

Find Deal

Fri, 7 Nov - Sun, 23 Nov

12:55 - 22:29DUB-ONT

17h 34m1 stop

07:00 - 07:10ONT-DUB

16h 10m1 stop

€509Iberia

Find Deal

Mon, 22 Dec - Fri, 2 Jan

12:55 - 22:14DUB-ONT

17h 19m1 stop

10:50 - 07:10ONT-DUB

12h 20m1 stop

€528Multiple Airlines

Find Deal

Fri, 27 Feb - Tue, 3 Mar

17:15 - 15:20ORK-ONT

30h 05m2 stops

22:30 - 15:00ONT-ORK

32h 30m2 stops

€601Delta

Find Deal

Fri, 27 Feb - Tue, 3 Mar

17:15 - 15:20ORK-ONT

30h 05m2 stops

06:00 - 23:25ONT-ORK

33h 25m2 stops

€605Delta

Find Deal

Wed, 10 Dec - Tue, 17 Mar

09:00 - 20:42DUB-ONT

19h 42m2 stops

05:40 - 06:10ONT-DUB

17h 30m2 stops

€605Air Canada

Find Deal

Mon, 12 Jan - Sat, 22 Aug

09:00 - 12:47DUB-ONT

35h 47m2 stops

18:30 - 07:45ONT-DUB

53h 15m2 stops

€643Air Canada

Find Deal

Wed, 19 Nov - Sat, 22 Nov

09:45 - 23:04DUB-ONT

21h 19m1 stop

12:16 - 07:45ONT-DUB

35h 29m1 stop

€695Air France

Find Deal

Sat, 27 Dec - Sat, 3 Jan

12:55 - 22:14DUB-ONT

17h 19m1 stop

10:50 - 07:10ONT-DUB

12h 20m1 stop

€747Multiple Airlines

Find Deal

Cheapest return fare

€488

Iberia

Fri 7/11Sat 15/11

DUB - ONT • 1 stop

Cheapest one-way flight

€523

Lufthansa

Wed 5/11

DUB - ONT • 2 stops

Start a new search

KAYAK searches hundreds of sites at once to find you the best travel deals.

We hope you love your trip to Ontario!

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	€488

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.
What is the cheapest time of day to fly to Ontario?
The cheapest time of day to fly to Ontario is generally in the morning, when flights cost €631 on average. The most expensive time of day to fly to Ontario is generally in the morning, which is peak travel time and where the average cost of a ticket is €631.

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

Direct departures

Ireland to Ontario

Monday

Aeromexico, Air Canada, Air France, +22 more

Aeromexico, Air Canada, +23 more

Tuesday

Aeromexico, Air Canada, Air France, +21 more

Aeromexico, Air Canada, +22 more

Wednesday

Aeromexico, Air Canada, Air France, +21 more

Aeromexico, Air Canada, +22 more

Thursday

Aeromexico, Air Canada, Air France, +22 more

Aeromexico, Air Canada, +23 more

Friday

Aeromexico, Air Canada, Air France, +22 more

Aeromexico, Air Canada, +23 more

Saturday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Sunday

Aeromexico, Air Canada, Air France, +22 more

Aeromexico, Air Canada, +23 more

See more direct flights

Direct returns

Ontario to Ireland

Monday

Aeromexico, Air Canada, Air France, +22 more

Aeromexico, Air Canada, +23 more

Tuesday

Aeromexico, Air Canada, Air France, +21 more

Aeromexico, Air Canada, +22 more

Wednesday

Aeromexico, Air Canada, Air France, +21 more

Aeromexico, Air Canada, +22 more

Thursday

Aeromexico, Air Canada, Air France, +22 more

Aeromexico, Air Canada, +23 more

Friday

Aeromexico, Air Canada, Air France, +22 more

Aeromexico, Air Canada, +23 more

Saturday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Sunday

Aeromexico, Air Canada, Air France, +22 more

Aeromexico, Air Canada, +23 more

See more direct flights

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)

Not what you’re looking for? Find thousands of other hotels, flights, car hires and package deals with KAYAK.

ONT

€471 Find Cheap Flights to Ontario

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

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

Everything you should know

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.

What is the cheapest time of day to fly to Ontario?

The cheapest time of day to fly to Ontario is generally in the morning, when flights cost €631 on average. The most expensive time of day to fly to Ontario is generally in the morning, which is peak travel time and where the average cost of a ticket is €631.

Top tips for finding cheap flights to Ontario

Prefer to fly direct 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