Cheap Flights from Ontario International Airport to Montana from $290 Return

Flight deals from Ontario International Airport to Montana

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

Bozeman.$147 per passenger.Departing Thu, 22 Jan.One-way flight with Alaska Airlines.Outbound indirect flight with Alaska Airlines, departs from Ontario International on Thu, 22 Jan, arriving in Bozeman Yellowstone International.Price includes taxes and charges.From $147, select.

Missoula.$173 per passenger.Departing Thu, 4 Dec.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Ontario International on Thu, 4 Dec, arriving in Missoula.Price includes taxes and charges.From $173, select.

Billings.$196 per passenger.Departing Wed, 19 Nov.One-way flight with Delta.Outbound indirect flight with Delta, departs from Ontario International on Wed, 19 Nov, arriving in Billings.Price includes taxes and charges.From $196, select.

Great Falls.$232 per passenger.Departing Sat, 6 Dec.One-way flight with Hawaiian Airlines.Outbound indirect flight with Hawaiian Airlines, departs from Ontario International on Sat, 6 Dec, arriving in Great Falls International.Price includes taxes and charges.From $232, select.

Helena.$251 per passenger.Departing Fri, 5 Dec.One-way flight with United.Outbound indirect flight with United, departs from Ontario International on Fri, 5 Dec, arriving in Helena.Price includes taxes and charges.From $251, select.

Kalispell.$386 per passenger.Departing Fri, 10 Jul.One-way flight with Alaska Airlines.Outbound indirect flight with Alaska Airlines, departs from Ontario International on Fri, 10 Jul, arriving in Kalispell.Price includes taxes and charges.From $386, select.

Sidney.$511 per passenger.Departing Tue, 23 Dec.One-way flight with Hawaiian Airlines.Outbound indirect flight with Hawaiian Airlines, departs from Ontario International on Tue, 23 Dec, arriving in Sidney.Price includes taxes and charges.From $511, select.

Butte.$687 per passenger.Departing Tue, 7 Oct.One-way flight with Delta.Outbound indirect flight with Delta, departs from Ontario International on Tue, 7 Oct, arriving in Butte.Price includes taxes and charges.From $687, select.

See more deals

Flying from Ontario International Airport to Montana

Arm yourself with these facts on the fly.

Cheapest flight found	$147
Cheapest month to fly	January

How to find cheap flights from Ontario International Airport to Montana

We've compared the best online travel agents and flight providers on the internet to find the cheapest plane tickets from Ontario International Airport to Montana. Other savvy travellers recently found return flights from $290 and one-way tickets from $147. Ready to join them? Here are a few tips to help you do it the smart way.

Fly in January

The cheapest time to fly from Ontario International Airport to Montana is currently January.

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 Airport to anywhere you choose in Montana.

Watch as fares rise and fall

With Price Alerts, we'll let you know when flight prices from Ontario International Airport to your chosen airport in Montana 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 Montana Airport to Montana flight price you see when you search with us is what you pay to the provider.

Frequently asked questions

Are there any direct flights from Ontario International Airport to Montana?

There are currently no direct flights from Ontario International Airport to Montana, but we've found some other routes to United States – check them out now.

What is the average price of a flight from Ontario International Airport to Montana?

We looked at all of the upcoming return flights from Ontario International Airport to Montana we could find over the next 12 months. It looks like $290 is the best price. This is good, compared to the average Montana ticket price of $444.

What is the cheapest month to fly from Ontario International Airport to Montana?

The cheapest month to fly from Ontario International Airport to Butte Airport is currently October.
The cheapest month to fly from Ontario International Airport to Billings Airport is currently January.
The cheapest month to fly from Ontario International Airport to Great Falls International Airport is currently November.
And the cheapest month to fly from Ontario International Airport to Missoula Airport is usually October.

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

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Ontario International Airport to Montana on Thursday, 8 January 2026.

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

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