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Cheap Flights to Ontario

Compare Ontario flights across hundreds of providers

Find the cheapest month or even day of the year to fly to Ontario

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Flight deals to Ontario

Looking for a cheap last-minute deal or the best return flight to Ontario? Find our lowest prices on one-way and return tickets to the easiest airport right here.
Boise.645 € per passenger.Departing Wed, 22 Oct, returning Wed, 5 Nov.Return flight with Icelandair and Hawaiian Airlines.Outbound indirect flight with Icelandair, departs from Dublin on Wed, 22 Oct, arriving in Boise.Inbound indirect flight with Hawaiian Airlines, departs from Boise on Wed, 5 Nov, arriving in Dublin.Price includes taxes and charges.From 645 €, select.
Boise.648 € per passenger.Departing Thu, 18 Sep, returning Sat, 27 Sep.Return flight with Icelandair and Hawaiian Airlines.Outbound indirect flight with Icelandair, departs from Dublin on Thu, 18 Sep, arriving in Boise.Inbound indirect flight with Hawaiian Airlines, departs from Boise on Sat, 27 Sep, arriving in Dublin.Price includes taxes and charges.From 648 €, select.
Boise.729 € per passenger.Departing Thu, 20 Nov, returning Tue, 2 Dec.Return flight with Icelandair and Hawaiian Airlines.Outbound indirect flight with Icelandair, departs from Dublin on Thu, 20 Nov, arriving in Boise.Inbound indirect flight with Hawaiian Airlines, departs from Boise on Tue, 2 Dec, arriving in Dublin.Price includes taxes and charges.From 729 €, select.
Boise.779 € per passenger.Departing Thu, 25 Sep, returning Thu, 9 Oct.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from Dublin on Thu, 25 Sep, arriving in Boise.Inbound indirect flight with Icelandair, departs from Boise on Thu, 9 Oct, arriving in Dublin.Price includes taxes and charges.From 779 €, select.
Boise.784 € per passenger.Departing Wed, 20 Aug, returning Thu, 28 Aug.Return flight with Ryanair and Hawaiian Airlines.Outbound indirect flight with Ryanair, departs from Dublin on Wed, 20 Aug, arriving in Boise.Inbound indirect flight with Hawaiian Airlines, departs from Boise on Thu, 28 Aug, arriving in Dublin.Price includes taxes and charges.From 784 €, select.
Boise.789 € per passenger.Departing Fri, 13 Mar, returning Fri, 27 Mar.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Dublin on Fri, 13 Mar, arriving in Boise.Inbound indirect flight with Air Canada, departs from Boise on Fri, 27 Mar, arriving in Dublin.Price includes taxes and charges.From 789 €, select.
Boise.894 € per passenger.Departing Wed, 16 Jul, returning Wed, 6 Aug.Return flight with Lufthansa.Outbound indirect flight with Lufthansa, departs from Dublin on Wed, 16 Jul, arriving in Boise.Inbound indirect flight with Lufthansa, departs from Boise on Wed, 6 Aug, arriving in Dublin.Price includes taxes and charges.From 894 €, select.
Boise.902 € per passenger.Departing Thu, 24 Jul, returning Mon, 28 Jul.Return flight with Icelandair and Spirit Airlines.Outbound indirect flight with Icelandair, departs from Dublin on Thu, 24 Jul, arriving in Boise.Inbound indirect flight with Spirit Airlines, departs from Boise on Mon, 28 Jul, arriving in Dublin.Price includes taxes and charges.From 902 €, select.

Flying to Ontario

The things to know before you go.
Fly intoBoise Airport
Distance to Ontario78.5 km
Cheapest flight found645 €
Cheapest month to flyOctober

Find the cheapest time to fly to Ontario

Flexible on travel dates? Find the cheapest month – or even day – to catch a flight to Ontario.
Jul
from 902 €
Aug
from 784 €
Sep
from 648 €
Oct
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Nov
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Dec
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Jan
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Feb
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Mar
from 789 €
Apr
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May
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Jun
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Frequently asked questions

Currently, there are no airlines that fly direct to Ontario. But we found flights with one or more stops from 645 €.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Ontario but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
No airlines currently offer direct flights between Ireland and Ontario. Most routes have one or more stops.
The best price we found for a return flight to Ontario is 645 €. This is an estimate based on information collected from different airlines and travel providers flying to Boise Airport over the last 4 days and is subject to change and availability.
The cheapest airport near Ontario is Boise – which is 78.5 km away from the centre of Ontario. We've found flights into this airport from 645 €.
After crunching the numbers on our flight calendar, we found that the cheapest date to fly to Boise Airport, the closest airport to Ontario is Wednesday, 22 October 2025.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Ontario is around 40 days in advance, so don’t leave your flight to the last minute.
Boise Airport is the best option, and is around 78.5km from Ontario.
The average temperature in Ontario in July is around 25°C. The warmest month in Ontario is typically July, which averages 33°C. The coolest month is December, with temperatures averaging -5°C. The rainiest month is December, and it usually rains the least in July.
Currently, the cheapest airline that flies to Boise Airport - the closest airport to Ontario - Icelandair.
Boise Airport is 78.5km from Ontario which is approximately 55 minutes driving time. Check out the options for car hire at Boise Airport.

Plan your trip to Ontario