$82 Find Cheap Flights from Illinois to Montana

1 adult
1 adult, Economy

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

Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 20% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Useful Info

Good to know

Low seasonApril
High seasonJuly
Cheapest flight$82
Best time to beat the crowds with an average 11% drop in price.
Most popular time to fly with an average 1% increase in price.
Flight from Chicago O'Hare Airport to Missoula

FAQs for booking flights from Illinois to Montana

  • How does KAYAK find such low prices on flights from Illinois to Montana?

    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 from Illinois to Montana.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Montana?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Illinois to Montana is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Illinois to Montana?

    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 from Illinois to Montana 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 from Illinois to Montana?

    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 from Illinois to Montana up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • Which is the cheapest airport to fly into in Montana?

    Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Montana is Billings Logan Intl Airport (BIL), with an average flight price of $224.

  • What is the cheapest day to fly to Montana?

    Based on KAYAK data, the cheapest day to fly to Montana is Tuesday where round-trip tickets can be as cheap as $418. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are $461 on average.

  • What is the cheapest time of day to fly to Montana?

    The cheapest time of day to fly to Montana is generally in the afternoon, when round-trip flights cost $289 on average. Morning departures are around 17% cheaper than evening flights, on average. The most expensive time of day to fly to Montana is generally in the evening, which is peak travel time and where the average cost of a ticket is $541.

  • What is the cheapest flight to Montana?

    The cheapest ticket to Montana from Illinois found in the last 72 hours was to Billings, at $225 round-trip. The most popular route is Chicago Midway Airport (MDW) to Bozeman (BZN) and the cheapest round-trip airline ticket found on this route in the last 72 hours was $229.

  • What is the cheapest month to fly from Illinois to Montana?

    The cheapest month for flights from Illinois to Montana is February, when tickets cost $317 (return) on average. On the other hand, the most expensive months are March and November, when the average cost of round-trip tickets is $518 and $508 respectively.

  • How far in advance should I book a flight from Illinois to Montana?

    To get a below average price on the flight from Illinois to Montana, you should book around 7 weeks before departure. For the absolute cheapest price, our data suggests you should book 11 weeks before departure.

  • How long is the flight to Montana?

    An average nonstop flight from Illinois to Montana takes 8h 51m, covering a distance of 1184 miles. The shortest route is Chicago Midway Airport (MDW) to Bozeman (BZN) with an average flight time of 3h 10m.

  • What are the most popular destinations in Montana?

    Based on KAYAK flight searches, the most popular destination is Kalispell (38% of total searches to Montana). The next most popular destinations are Bozeman (33%) and Missoula (16%). Searches for flights to Billings (6%), to Helena (2%) and to West Yellowstone (2%) are also popular.

Reviews of the top 5 airlines serving from Illinois to Montana

 
Need help choosing which airline to fly with from Illinois to Montana? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
Alaska AirlinesOverall score based on 10000 reviews
7.1Food
8.5Crew
7.1Entertainment
8.1Boarding
7.8Comfort
Airline reviews

Flight was delayed which led to missed connection, but rebooked on a more direct flight at the last minute and arrived in Juneau on time with all our luggage. Little stressful and our family seating got split, but it all worked out in the end.

10.0 ExcellentJeffrey, Jun 2025HNL - KOA
Read more Alaska Airlines reviews

Flight was delayed which led to missed connection, but rebooked on a more direct flight at the last minute and arrived in Juneau on time with all our luggage. Little stressful and our family seating got split, but it all worked out in the end.

It was very good and comfortable, Crew was also great

The flight was delayed almost an hour. No wifi on flight.

Good experience, although it was a little cramped being a tall person. Otherwise everything went smoothly and professionally though

We have always flown with Alaska when we can. As they have great customer service. This trip we had to transfer to Air LINGUS in Denver to go to Dublin. That’s where things went bad! Our checked luggage didn’t arrive. The process to make a claim was way more complicated than it should be. It took 5 days to recover our luggage. The whole time we couldn’t talk to a real person who could tell us anything. The whole time Alaska blamed Air lingus and vis a versa. No one seemed want to help us. That was the worst part.

We were delayed. We spent more time waiting on the plane than actually flying (it’s only a 37 minute flight). Other than that, it was fine.

The setting on the loudspeaker was painful and the crew member who did the talking spoke very quickly and repetitively, with extra little jokes that were distracting and mostly unfunny. I doubt that the main messages penetrated the noise.

Only offered water, no snacks provided, and it was cold on the plane, everyone was wearing sweatshirt or jacket in June. I asked for blanket, but crew said they didnt have anything and would turn the heat up, that didn't happen, so for 6 hours I remained cold.

Delay of more than 3 hours I didnt recieve neither a voucher for food Attention disaster

Flight from New Orleans to Seattle to Anchorage was delayed for 3 hours My flight from Seattle to Anchorage was not rescheduled. I had to call the airlines to tell them to get a flight from Seattle to Anchorage they finally got me a flight If I hadn’t been aware of this problem I don’t know how long I would of waited in Seattle to get a flight to Anchorage!!!!!! Return trip from Anchorage to New Orleans in Seattle to New Orleans I was at the right gate when I realized something was wrong they had changed the gate without notifying the change l finally made it on time with minutes to spare & exhausted

Delayed flight. Nicest crew member was a SW pilot flying seated next to me who kindly move to seat the final passenger. Flight extra delayed. My cup of refreshment of ginger ale was so packed with ice it was literally 2 sips.

For my birthday trip this was my second time ever flying, this trip was the best.

after landing, we stay 2 hours on the taxi way before reaching the gate The airline and the crew were good though

No trays in our seats, we sat in first row, purchased a business class fare. Had to hold our drinks and snack in our hands. No plugs for our cell phones. Had to pay for it a drink cocktail each. Seats so uncomfortable.

Flight wasn’t even full, but too many carry-ons caused us to run out of bin space. New bag fee has folks who would usually check their bags carrying on. Watching Southwest morph into Spirit/Frontier is so sad to watch

Sat on tarmac for 2 hours and then missed my connecting flight

First time traveling on Southwest since bag fees were implemented. Usual good service. Just more expensive now.

Everything was on time. I was disappointed by the front section female, African American flight attendant. I did not see her name tag or would have identified by name not race. As passengers moved to the bathroom early in flight, she would say with a disdainful tone “I have to say the seat belt light is on” then go back to her book. Better trained flight attendants say something like be careful the seat belt light is on.

Cluster mess boarding. Can't wait for SWA reserved seating. Internet didn't seem to work on the plane.

Flights delayed by 4-6 hours. Boarding was a mess and unclear. Bags were not at arrival airport and had never even been put on the plane. No idea when I’ll get them. Don’t fly into Denver!

Crew was excellent. Comfort seats not as nice as other kinds of planes.

Not a "Delta" issue, but a JFK issue: We booked a connecting flight with 3 1/2 hours between to clearn immigration and customs. Our inbound flight (BCN to JFK) was on the taxiway 45 minutes which ate into our layover time. Immigtration was insanely quick with the CBP MPC app; however, clearing TSA (again, after we were ALREADY cleared in Spain on the inbound international flight) took over 95 minutes. This left us with 10 minutes before boarding the connecting flight (JFK to SAN) to walk to the far end of Terminal 4 and try to find food. We didn't find any food that could promise to serve us in under 10 minutes so we boarded the Delta flight after coming off a plance and an 8-hour flight knowing that we wouldn't be served any food on the next 5 1/2 hour flight. I feel like Delta needs to put pressure on the JFK TSA to open more screening stations (by our count, we saw only 5 scanners open and a line of - as we said - over 90 minutes. The insult is that we WERE ALREADY SCREENED through TSA, but as you come off one flight into the USA, you have to go through the whole process again. It seems like if you have a connecting flight, there should be a way to pass through immigration and customs without needing to return through TSA.

It was a great flight and the stewards and stewardess were all kind and accommodating!! The seats were comfortable and entertainment screen excellent!

There are 4 flights in consecutive gates with about the same departure time. Two flights were boarding at the same time. One was delayed or boarding would be happening at the same time. I am not sure what Delta and LAX need to do to have a better layout at the end of Terminal 2

Flight was an hour late, who knows why. It was OK, nothing outstanding.

Only not having an assigned seat was an issue. Rest was great

There was a security issue at the airport and we were unable to land. We circled endlessly and then landed at another airfield for fuel. We then circled the airport again, almost landed but didn’t fully touch down before circling again. I am thankful to the crew for keeping us safe- the issue was the airline and staff at the airport getting us seats on our connecting flights. That part was hours of searching for someone and getting in double my steps.

Boarding was organised and relaxed. Crew were fantastic! Seats were lacking padding causing butt pain and stiffness.

I like for how they process during check in. It was very smoothly.

The flight was scheduled for 2:30 PM. Early in the morning we got a text message saying the flight was delayed and rescheduled for 3:00 PM. We got to the airport with that in mind. Then we got a message during check-in at the flight was rescheduled again for 2:30 PM. We almost missed our flight. In fact, our bags Were told that they would not make it. At the end, everything worked out. But it is very stressful.

Evidently, my seat had the only broken TV. I couldn’t plug it in, get it to come on, or watch anything, and of course, no one could fix it while we were on the plane. The service was good and the boarding was quick

It was fine, definitely older planes with no charging or anything. There’s no entertainment set up on board, but it is nice that they allow you to access the in flight entertainment from your phone without having to pay for the Wi-Fi and they do offer free texting.

I was charged for my daughters bag when I am supposed to receive two free checked bags with my United Explorer card.

The schedule to Moline changed 5 times. The gate changed 6 times. That is a pathetic way to run an airline. No wonder that no one in our company flies on United Express to or from Moline. Changes happen most of the time. I learned my lesson on this trip…never again!

Flight was great. Efficient boarding. Short flight. Early arrival. Friendly flight crew. The entertainment system did not work well. Could not access it until the aircraft reached 10K feet or more. Lots of glitches.

A bit rush for transit. Food and entertainment are not available

Smooth boarding process. Early departure, smooth flight, early arrival. The entertainment package has very good recent movie options. The flight crew were friendly and professional.

My flight was scheduled for about 6:05 departure. There were 11 gate changes from 4-7pm and the flight was 3 hours delayed due to operational issues. The plane taxied around the airport for about half an hour before stopping to be de-iced. It would have been nice if we were alerted of the plan to de-ice prior to the 30 minute drive around the airport. The flight attendant was friendly, which was the only redeeming thing about this flight. As a former flight attendant for United, I was extremely disappointed.

Delays took 2hours and thirty minutes making me miss my connecting flight and make me sit in the Chicago airport for 9 hours

Had a short delay once we boarded the aircraft in Chicago, but it was fixed in no time flat then we were on our way. The pilot was able to make up the time lost and we landed 5 minute later then schedualed . Great service

I wish American Airlines would change the airline industry by loading the plane back to front instead of front to back. Planes would board so much more smoothly and quickly.

I have long legs, my foot was out in the aisle and when a flight attendant came walking by and I didn't notice, instead of saying "excuse me" or anything like that, she kicked my foot. Extremely rude

Excellent! The gate agents were kind enough to rebook me on an earlier flight saving me from a 6 hour layover. Even my luggage made it despite the fact that the connection was technically too narrow. The flight itself was very comfortable, roomy, and clean. Plenty of space for my carryon items with plugs to charge my phone. After a long international flight of 14 hours, this was an excellent way to end my travels!

Great experience. Flight boarded easily. Departed early. Smooth flight. Great arrival in DC--almost no taxing! Almost direct to gate from runway. Crew was terrific. Same cookies and beverages in main cabin. I did not use the entertainment system on this flight.

Most of the delay was due to weather which is not what was at issue here. One delay was due to a missing flashlight and in the end the flashlight was actually found on the plane. The entertainment system is very limited. Live TV options offer only a few channels that are not very appealing. Boarding and deplaning are always difficult. It just takes too much time to get on and off the plane. On the plus side, I missed my connecting flight, but was easily able to book a later flight from the app while enroute.

You were more on time than United. I'm so over united delays.

The meals were mediocre and the alcohol selection was poor. I enjoyed the selection of movies and other entertainment.

I chatted with the captain before the flight, and similarly during the welcome announcement, he warned of a turbulent flight that may impact the in-flight service. However, once at altitude, he announced that the weather changed and he immediately turned off the seatbelt sign. But it appeared the cabin crew had already decided to take off this flight. They remained seated and then just chatted in the galley. The flight was fully catered, but only first class received service.

My flight attendant was attentive! The elderly person next to me was flatulent and the flight attendant could see that I was in distress and brought me some face masks

My boarding pass wouldn't pull up in the app very easily and had to really dig through my email. That caused a delay in TSA..

Book cheap flights from Illinois to Montana

Recent round-trip flight deals

9/6Sat
1 stopHawaiian Airlines
7h 14mORD-BZN
9/13Sat
1 stopHawaiian Airlines
6h 49mBZN-ORD
$168
11/2Sun
1 stopHawaiian Airlines
7h 04mORD-BZN
11/11Tue
1 stopHawaiian Airlines
9h 23mBZN-ORD
$175
9/21Sun
nonstopAmerican Airlines
3h 52mORD-FCA
10/1Wed
nonstopAmerican Airlines
3h 33mFCA-ORD
$191
9/15Mon
nonstopAmerican Airlines
3h 42mORD-MSO
9/18Thu
nonstopAmerican Airlines
3h 31mMSO-ORD
$191
9/17Wed
nonstopUnited Airlines
3h 24mORD-BZN
9/24Wed
nonstopUnited Airlines
3h 05mBZN-ORD
$191
9/6Sat
1 stopAlaska Airlines
7h 14mORD-BZN
9/12Fri
1 stopAlaska Airlines
10h 40mBZN-ORD
$195
9/17Wed
nonstopUnited Airlines
3h 24mORD-BZN
9/24Wed
1 stopUnited Airlines
5h 51mBZN-ORD
$201
8/18Mon
1 stopAlaska Airlines
16h 04mSTL-BZN
8/25Mon
1 stopAlaska Airlines
7h 51mBZN-STL
$214
9/22Mon
1 stopDelta
6h 55mORD-BIL
9/27Sat
1 stopDelta
5h 28mBIL-ORD
$233
9/3Wed
1 stopDelta
5h 36mMDW-FCA
9/10Wed
1 stopDelta
5h 13mFCA-MDW
$237

Search by stops

Search by airline

Search by price

Recent one-way flight deals

7/18Fri
1 stopFrontier
7h 14mORD-MSO
$82
9/3Wed
nonstopUnited Airlines
3h 18mORD-BZN
$96
9/14Sun
nonstopSouthwest
3h 10mMDW-BZN
$96
9/11Thu
1 stopAlaska Airlines
11h 08mORD-BZN
$103
9/3Wed
1 stopSouthwest
8h 05mMDW-BZN
$106
8/27Wed
1 stopAlaska Airlines
8h 54mORD-BZN
$114
8/15Fri
nonstopAmerican Airlines
3h 14mORD-BZN
$115
9/8Mon
nonstopAmerican Airlines
3h 38mORD-FCA
$117
10/16Thu
1 stopDelta
10h 08mORD-BZN
$119
9/8Mon
1 stopDelta
5h 36mMDW-FCA
$119

Search by stops

Search by airline

Search by price

Last minute flights from Illinois to Montana

Last minute flight, train and bus deals

7/5Sat
nonstopSouthwest
3h 15mMDW-BZN
7/12Sat
nonstopSouthwest
2h 55mBZN-MDW
$304
7/5Sat
multi-stopSouthwest
7h 00mMDW-BZN
7/12Sat
nonstopSouthwest
2h 55mBZN-MDW
$314
7/5Sat
multi-stopDelta
6h 26mMDW-BZN
7/12Sat
multi-stopDelta
10h 40mBZN-MDW
$329
7/5Sat
multi-stopAmerican Airlines
6h 47mORD-BZN
7/12Sat
nonstopAmerican Airlines
3h 10mBZN-ORD
$353
7/2Wed
nonstopAmerican Airlines
3h 12mORD-BZN
7/13Sun
nonstopAmerican Airlines
3h 10mBZN-ORD
$398
7/3Thu
nonstopUnited Airlines
3h 24mORD-BZN
7/8Tue
multi-stopUnited Airlines
5h 46mBZN-ORD
$414
7/3Thu
nonstopUnited Airlines
3h 24mORD-BZN
7/7Mon
nonstopUnited Airlines
3h 06mBZN-ORD
$422
7/3Thu
multi-stopDelta
7h 40mORD-BZN
7/10Thu
multi-stopDelta
7h 49mBZN-ORD
$429
7/2Wed
multi-stopAlaska Airlines
9h 31mORD-BZN
7/8Tue
multi-stopAlaska Airlines
9h 15mBZN-ORD
$449
7/2Wed
multi-stopAlaska Airlines
9h 31mORD-BZN
7/5Sat
multi-stopAlaska Airlines
7h 59mBZN-ORD
$543

Search by stops

Search by airline

Search by price

Everything you need to know for your flight to Montana

Cabin class types available on flights to Illinois

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

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.