Cheap flight tickets from Chicago to Missoula

Compare Chicago to Missoula flight deals

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

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Flight deals from Chicago to Missoula

Looking for a cheap last-minute deal or the best return flight from Chicago to Missoula Airport? If you want to travel next month, return fares start from RM1,646. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Chicago to Missoula

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Chicago to Missoula flights are currently cheapest in August.

Direct flights from Chicago to Missoula

Chicago to Missoula: Alternative routes

Compare routes from Chicago to Missoula below. You may find an airport to fly into that's cheaper, faster, or easier than Missoula.

Chicago to Missoula: Flight information

The things to know before you go.
Cheapest flight foundRM770
Cheapest month to flyAugust
Average flight time3 hrs, 54 mins
Most popular airlineAlaska Airlines
Average flights per week144

Finding cheap flights from Chicago to Missoula: Frequently asked questions

The best price we found for a return flight from Chicago to Missoula is RM1,233. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
3 hours and 54 minutes is the average flight time from Chicago to Missoula.
Alaska Airlines, American Airlines and Envoy Air fly direct from Chicago to Missoula.
As of June 2026, there are 36 flights per week flying from Chicago to Missoula.
The cheapest month to fly from Chicago to Missoula is usually September.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Chicago to Missoula Airport on Saturday, 26 September 2026.
Yes – the average flight time is 3 hours and 54 minutes.
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 Missoula 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.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Missoula is around 40 days in advance, so don’t leave your flight to the last minute.
The cheapest airline that flies to Missoula is United .

Travelling from Chicago to Missoula Montana Airport (MSO): What you need to know

  • Your boarding pass to adventure starts at Chicago's main airport, Chicago O'Hare International Airport (ORD). Explore your options for catching a flight from Chicago to Missoula Montana Airport (MSO) leaving from this base.

  • 3 hours 45 minutes is the average duration of a direct Chicago to Missoula Montana Airport flight.

  • Missoula Montana Airport is located in Missoula. The city runs on the UTC-7 timezone and is one hour behind Chicago.

  • The busiest route is from Chicago O'Hare International Airport (ORD) to Missoula Montana Airport (MSO), with 12 direct services every week. If you're looking to take off without delay, the earliest flight from ORD to MSO is the 8:50am United Airlines service. If you need some extra time before takeoff, the last departure is at 8:25pm with American Airlines.

  • Get to the airport on time so you don't miss your flight from Chicago to MSO. Be there at least two hours ahead for international flights and an hour early for domestic departures to skip the mad dash to your gate.

  • Peak months like July or holiday times such as spring break and Thanksgiving will mean bigger waits at check-in and security. If you're travelling then, play it safe and get to the airport even earlier. Arriving two hours before a domestic flight and up four hours ahead of international flights is a smart idea.

Airports in Chicago

Chicago O'Hare International Airport (ORD)

  • Enjoy an uninterrupted journey from Chicago O'Hare International Airport (ORD). Direct flights from Chicago to Missoula Montana Airport (MSO) can be booked from here.

  • When leaving from ORD, you can catch a direct flight from Chicago to Missoula Montana Airport with American Airlines.

  • The majority of passengers prefer to fly with American Airlines from ORD to MSO.

  • United is the most punctual carrier. An exceptional 80.0% of its departures on this route reach their destination on schedule.

  • Travelling from central Chicago to ORD takes about 45 minutes by public transport. If you ride-share, drive or get a taxi, you'll cover the 27 kilometres in 30 minutes or so, depending on traffic.

  • Searching for a convenient hotel close to Chicago O'Hare International Airport? If you're catching an early flight from Chicago to Missoula Montana Airport, these accommodation options will put you conveniently close to check-in:

  • Of all flights departing from Chicago O'Hare International Airport, 70% land on time at their destination.

  • The address for ORD is 10000 West O'Hare.

Chicago Midway International Airport (MDW)

  • You can arrive at MDW from central Chicago in approximately 25 minutes by car (depending on traffic). The ride on public transport takes roughly 30 minutes to travel the 16 kilometres or so.

  • Taking off bright and early? You might like to check in to one of these hotels near Chicago Midway International Airport the day before your Chicago to MSO flight:

  • 76% of all departures from Chicago Midway International Airport stick to their scheduled arrival time.

  • MDW is located at 5700 South Cicero.

Chicago Rockford International Airport (RFD)

  • RFD is roughly 145 kilometres from central Chicago. The drive from the city centre to the terminal takes about 1 hour 40 minutes. If you're thinking about using public transport, expect a journey time of around 2 hours.

  • Take the 'what ifs' out of departure day — stay close to Chicago Rockford International Airport and know you'll get to the terminal with time to spare. Settle in at one of these hotels the day before if you've booked an early Chicago to Missoula Montana Airport flight:

  • Flights that depart from RFD reach their destination within the scheduled time frame 71% of the time.

  • The street address of Chicago Rockford International Airport is 2 Airport Cir.

About Missoula Montana Airport (MSO)

Getting from Missoula Montana Airport (MSO) to central Missoula

  • Missoula Montana Airport to the centre of Missoula is roughly 8 kilometres. If you're taking a taxi or renting a car, do some research to make your trip as easy as possible. Journey times may vary based on the time of day and traffic conditions.

  • It typically takes 30 minutes if you're using public transport.

How to find the cheapest flights from Chicago to Missoula Montana Airport (MSO)

  • The cheapest price we've found for a one-way ticket from Chicago to Missoula Montana Airport is RM770. For a return flight on this route, the best price is RM1,233. Depending on when you want to go and the availability, these fares may change.

  • To snap up cheap flights from Chicago to MSO, book your ticket three months ahead of your departure date.

  • August is when you're most likely to land a bargain on a Chicago to Missoula Montana Airport ticket. If you need to travel at a different time of year, the 'Whole month' tool will show you the lowest prices for every month.

  • Save time searching for cheap plane tickets from Chicago to MSO by creating a Price Alert. We'll send you an email or notification through the app when a new discounted fare appears.

  • Find a cheap flight from Chicago to Missoula Montana Airport by using filters. Select your ideal departure time, duration and airlines, then sort the results by 'Cheapest' for the best deals.

The best time to fly from Chicago to Missoula Montana Airport (MSO)

  • Think about the pace you're looking for when picking your flight dates. December is the quietest month to go to Missoula. July is when most people book flights from Chicago to Missoula Montana Airport (MSO), which may be ideal if you'd rather travel when it's busy.

  • Before locking in your Chicago to MSO plane ticket, consider the kind of weather you prefer. July is the warmest month in Missoula, with temperatures ranging from 8ºC (46ºF) to 33ºC (91ºF).

  • January sees temperatures of between -16ºC (3ºF) and 2ºC (36ºF). Search for cheap tickets from Chicago to Missoula Montana Airport around that time if you like cooler conditions.

More about Missoula

Explore more of the United States

  • Missoula will leave a lasting impression, but there are so many other parts of the United States waiting to be explored. Around 257 kilometres west of Missoula, a visit to Spokane will keep your itinerary busy. Check out popular attractions like Riverside State Park, Spokane Falls (Upper Falls) and Cathedral of Our Lady of Lourdes.

  • Around 257 kilometres west of Missoula, Spokane Valley is another essential stop in the United States. Experience major highlights starting with Appleway Trail, Splash Down Waterpark and Honour Point Military and Aerospace Museum.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.