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 stopover 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 13h 50m, 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>

€523 CHEAP FLIGHTS to Ontario in 2025

ONT

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Cheap Flight Deals 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.

Round-trip

One-way

Last minute

All Flight Deals

Recent return flight deals to Ontario

KAYAK's recommended return flight deals from the most popular airlines that fly to Ontario.

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

Choose your dates

12:40 - 22:10DUB-ONT

17h 30m1 stop

07:30 - 09:45ONT-DUB

18h 15m1 stop

€523Iberia

Find Deal

Sun, 4 May - Sun, 11 May

11:00 - 22:29DUB-ONT

19h 29m1 stop

22:59 - 08:45ONT-DUB

25h 46m1 stop

€536KLM

Find Deal

Sun, 14 Sep - Sat, 20 Sep

11:45 - 21:57DUB-ONT

18h 12m2 stops

22:40 - 05:30ONT-DUB

22h 50m1 stop

€536British Airways

Find Deal

Mon, 5 May - Mon, 12 May

11:45 - 21:05DUB-ONT

17h 20m1 stop

22:40 - 05:30ONT-DUB

22h 50m1 stop

€540British Airways

Find Deal

Mon, 5 May - Mon, 12 May

12:40 - 09:50DUB-ONT

29h 10m1 stop

12:45 - 09:45ONT-DUB

13h 00m1 stop

€547American Airlines

Find Deal

Sun, 4 May - Sun, 11 May

05:55 - 22:43DUB-ONT

24h 48m2 stops

22:00 - 09:15ONT-DUB

27h 15m2 stops

€548Delta

Find Deal

Mon, 5 May - Mon, 12 May

05:55 - 22:43DUB-ONT

24h 48m2 stops

13:10 - 16:40ONT-DUB

19h 30m2 stops

€552Delta

Find Deal

Sun, 4 May - Sun, 11 May

11:45 - 21:05DUB-ONT

17h 20m1 stop

22:40 - 05:30ONT-DUB

22h 50m1 stop

€555American Airlines

Find Deal

Mon, 5 May - Mon, 12 May

12:40 - 23:50DUB-ONT

19h 10m1 stop

12:50 - 16:00ONT-DUB

19h 10m2 stops

€557

Find Deal

Mon, 7 Apr - Mon, 14 Apr

11:10 - 23:50DUB-ONT

20h 40m2 stops

12:50 - 16:00ONT-DUB

19h 10m2 stops

€595

Find Deal

Mon, 7 Apr - Mon, 14 Apr

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.

Prices

The cheapest time of day to fly to Ontario is generally in the morning, when round-trip flights cost €734 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 €734.

Find deals

Cheapest flight	€523

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.

See more FAQs

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, +23 more

Aeromexico, Air Canada, +24 more

Tuesday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Wednesday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Thursday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Friday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 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, +23 more

Aeromexico, Air Canada, +24 more

Tuesday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Wednesday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Thursday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Friday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 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

ONT

€523 Find Cheap Flights to Ontario

This is the cheapest return flight price found by a KAYAK user in the last 72 hours by searching for a flight to Ontario departing on 4/5. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.

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

Cheap Flight Deals 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 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 round-trip flights cost €734 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 €734.

How long is the flight to Ontario?

Good to know – Book Cheap Ontario Plane Tickets

Cheapest flight

When to book flights to Ontario

FAQs - booking Ontario flights

How far is Ontario Airport from central Ontario?

What is the name of Ontario’s airport?

How does KAYAK find such low prices 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?

What is the Hacker Fare option on flights to Ontario?

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

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

Cabin classes available on flights to Ontario. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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

Flights to other popular destinations

The most popular flights on KAYAK according to clicks in the last 2 weeks. Prices are the lowest found on KAYAK over the last 7 days. Price and availability are not guaranteed.

Flights from local origins to Ontario

Flights from all regions of Ireland to Ontario. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

Choose which airport to fly into in Ontario

Flights to other airports in Ontario. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

Find deals for your return flight