Flights from Ontario International to Idaho

Flight deals from Ontario to Idaho

Looking for cheap tickets from Ontario to Idaho, or a last-minute trip? Find the lowest prices on one-way and return tickets right here.

Boise.£151 per passenger.Departing Mon, 2 Jun, returning Mon, 9 Jun.Return flight with Frontier Airlines and Spirit Airlines.Outbound indirect flight with Frontier Airlines, departs from Ontario International on Mon, 2 Jun, arriving in Boise.Inbound indirect flight with Spirit Airlines, departs from Boise on Mon, 9 Jun, arriving in Ontario International.Price includes taxes and charges.From £151, select.

Idaho Falls.£279 per passenger.Departing Fri, 13 Jun, returning Mon, 16 Jun.Return flight with Delta.Outbound indirect flight with Delta, departs from Ontario International on Fri, 13 Jun, arriving in Idaho Falls.Inbound indirect flight with Delta, departs from Idaho Falls on Mon, 16 Jun, arriving in Ontario International.Price includes taxes and charges.From £279, select.

Twin Falls.£309 per passenger.Departing Wed, 25 Jun, returning Mon, 30 Jun.Return flight with Delta.Outbound indirect flight with Delta, departs from Ontario International on Wed, 25 Jun, arriving in Twin Falls.Inbound indirect flight with Delta, departs from Twin Falls on Mon, 30 Jun, arriving in Ontario International.Price includes taxes and charges.From £309, select.

Hailey.£374 per passenger.Departing Wed, 25 Jun, returning Mon, 30 Jun.Return flight with Delta.Outbound indirect flight with Delta, departs from Ontario International on Wed, 25 Jun, arriving in Hailey.Inbound indirect flight with Delta, departs from Hailey on Mon, 30 Jun, arriving in Ontario International.Price includes taxes and charges.From £374, select.

Lewiston.£386 per passenger.Departing Fri, 9 May, returning Tue, 13 May.Return flight with Delta.Outbound indirect flight with Delta, departs from Ontario International on Fri, 9 May, arriving in Lewiston-Nez Perce County.Inbound indirect flight with Delta, departs from Lewiston-Nez Perce County on Tue, 13 May, arriving in Ontario International.Price includes taxes and charges.From £386, select.

Flying from Ontario International to Idaho

Arm yourself with these facts on the fly.

Cheapest flight found	£151, Boise
Cheapest month to fly	June
Cheapest airport to fly from	Ontario International

How to find cheap flights from Ontario International to Idaho

We've compared the best online travel agents and flight providers on the internet to find the cheapest plane tickets from Ontario International to Idaho. Other savvy travellers recently found return flights from £151 and one-way tickets from £73 one-way. Ready to join them? Here are a few tips to help you do it the smart way.

Fly from Ontario International into Boise

At the moment, the lowest priced flight tickets to Idaho are from Ontario International Airport to Boise Airport.

Fly in May

We crunched the flight calendar and found the cheapest time to fly from Ontario International to Idaho is currently May.

Fly on a Saturday

From our data, we can see that Saturday seems to be the cheapest time to fly from Ontario International to Idaho.

Flex your dates for the best rates

If you’re flexible on your departure dates, you can use Skyscanner's whole month tool to find the cheapest day of the year to fly from Ontario International to anywhere you choose in Idaho.

Watch as fares rise and fall

With Price Alerts, we'll let you know when flight prices from Ontario International to Idaho go up or down so you can book when the time is just right.

Relax – these are fee-free flight tickets

With us, there are no added fees – the Ontario International to Idaho flight price you see when you search with us is what you pay to the provider.

Frequently asked questions

What's the average Ontario International to Idaho flight price?

We looked at all of the upcoming return flights from Ontario International to Idaho we could find over the next 12 months. It looks like £151 is the best price. This is good, compared to the average Idaho ticket price of £269.

What is the cheapest month to fly from Ontario International to Idaho?

The cheapest month to fly from Ontario International to Boise Airport is usually June. The cheapest month to fly from Ontario International to Idaho Falls Airport is usually June. The cheapest month to fly from Ontario International to Hailey Airport is usually June. And the cheapest month to fly from Ontario International to Twin Falls Airport is usually June.

Which upcoming date is cheapest to fly from Ontario International to Idaho on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Ontario International to Idaho on Monday, 2 June 2025.

Are there any direct flights from Ontario International to Idaho?

Currently, there aren't any direct flights from Ontario International to Idaho, but you can still fly with a stopover.

If I'm flying from Ontario International, where in Idaho is cheapest to fly into?

If you're flying from Ontario International, the cheapest city in Idaho to fly into is Boise. The cheapest airport serving Boise at the moment is Boise.