$114 Find Cheap Flights from Missoula to Illinois

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Missoula to Illinois departing on 3/4. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Missoula to Illinois, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Missoula to Illinois, as well as popular online travel agencies
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Cheap Flights from Missoula to Illinois

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Chicago
Chicagononstop$249
Moline
Moline2 stops$428
Peoria
Peoria2 stops$428
St. Louis
St. Louis1 stop$257
Chicago
Chicagononstop$249
Moline
Moline2 stops$428
Peoria
Peoria2 stops$428
St. Louis
St. Louis1 stop$257

Book Cheap Missoula to Illinois Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Missoula to Illinois that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Missoula to Illinois

Thu, May 28 - Tue, Jun 2
United Airlines Logo
12:31 pm - 5:03 pm
MSO
-
ORD
3h 32mnonstop
United Airlines Logo
8:40 am - 11:35 am
ORD
-
MSO
3h 55mnonstop
$249United Airlines
Fri, Feb 20 - Tue, Mar 3
Alaska Airlines Logo
6:23 am - 4:33 pm
MSO
-
ORD
9h 10m
1 stop
Alaska Airlines Logo
5:29 pm - 11:59 pm
ORD
-
MSO
7h 30m
1 stop
$253Alaska Airlines
Wed, Mar 4 - Sat, Mar 7
Delta Logo
6:10 pm - 12:25 am
MSO
-
STL
5h 15m
1 stop
Delta Logo
7:00 am - 12:26 pm
STL
-
MSO
6h 26m
1 stop
$257Delta
Thu, May 28 - Tue, Jun 2
United Airlines Logo
5:27 pm - 12:44 am
MSO
-
ORD
6h 17m
1 stop
United Airlines Logo
8:40 am - 11:35 am
ORD
-
MSO
3h 55mnonstop
$259United Airlines
Fri, Mar 27 - Sun, Apr 5
United Airlines Logo
5:16 pm - 11:52 pm
MSO
-
ORD
5h 36m
1 stop
United Airlines Logo
7:00 am - 1:36 pm
ORD
-
MSO
7h 36m
1 stop
$261United Airlines
Wed, Mar 4 - Sat, Mar 7
Delta Logo
7:30 am - 2:54 pm
MSO
-
STL
6h 24m
1 stop
Delta Logo
3:40 pm - 11:30 pm
STL
-
MSO
8h 50m
2 stops
$262Delta
Mon, Feb 23 - Tue, Mar 3
Alaska Airlines Logo
6:23 am - 2:11 pm
MSO
-
ORD
6h 48m
1 stop
Alaska Airlines Logo
5:29 pm - 11:59 pm
ORD
-
MSO
7h 30m
1 stop
$287Alaska Airlines
Sat, Jul 11 - Tue, Jul 14
American Airlines Logo
6:45 am - 4:03 pm
MSO
-
MLI
8h 18m
1 stop
American Airlines Logo
4:33 pm - 10:34 pm
MLI
-
MSO
7h 01m
1 stop
$570American Airlines
Fri, Jul 10 - Mon, Jul 13
American Airlines Logo
2:08 pm - 11:25 pm
MSO
-
MLI
8h 17m
1 stop
American Airlines Logo
4:33 pm - 10:34 pm
MLI
-
MSO
7h 01m
1 stop
$670American Airlines
Sat, Apr 4 - Sat, Apr 11
Allegiant Air Logo
6:20 pm - 11:28 am
MSO
-
PIA
16h 08m
1 stop
Allegiant Air Logo
4:48 pm - 10:58 am
PIA
-
MSO
19h 10m
1 stop
$685Allegiant Air
Booking Insights

KAYAK's insights & trends for Missoula to Illinois flights

Get data-powered insights and trends into flights from Missoula to Illinois to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest Missoula to Illinois flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Illinois from Missoula found in the last 72 hours was to Chicago, at $263 round-trip. The most popular route is from Missoula (MSO) to Chicago O'Hare Intl Airport (ORD), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $263.

Can I save money by flying with a layover from Missoula to Illinois?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $361, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from Missoula to Illinois?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Missoula to Illinois, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Missoula to Illinois is July, when tickets cost $310 (return) on average. On the other hand, the most expensive months are January and February, when the average cost of round-trip tickets is $725 and $551 respectively.

What’s the cheapest day of the week to fly from Missoula to Illinois?

The average price of all round-trip flights from Missoula to Illinois clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Illinois on a Wednesday and more expensive on a Monday. On your return trip to Missoula, you should consider flying back on a Monday, and avoid Sundays for better deals.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Missoula to Illinois, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Missoula to Illinois, you should book around 3 weeks before departure, which saves you about 41% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 14 weeks before departure.

Good to know

Low seasonMarch
Cheapest flight$114
Best time to beat the crowds but there is an average 5% increase in price.
Most popular time to fly and prices are also 17% lower on average.
Flight from Missoula to Chicago O'Hare Airport

FAQs - booking Illinois flights

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

    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 Missoula to Illinois.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Missoula to Illinois 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 Missoula to Illinois?

    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 Missoula to Illinois 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 Missoula to Illinois?

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

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

    The cheapest time of day to fly to Illinois is generally in the morning, when round-trip flights cost $473 on average. The most expensive time of day to fly to Illinois is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $550.

Top tips for finding cheap flights to Illinois

  • Looking for a cheap flight? 25% of our users found tickets from Missoula to the following destinations at these prices or less: Chicago $255 one-way - $360 round-trip

Reviews of the top 4 airlines serving from Missoula to Illinois

 
See real verified KAYAK customer reviews for airlines flying from Missoula to Illinois. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Missoula to Illinois? 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 11819 reviews
8.1Boarding
7.1Food
7.8Comfort
8.5Crew
7.0Entertainment
Airline reviews

Worst first/business class I have ever flown after 75 years on planes. Barely acceptable seats, terrible food, uninterested attendants, unavailable WiFi. I’ll never fly this airline again.

4.0 OkayJerry, Jan 2026
SAN - ORD
Read more Alaska Airlines reviews

Worst first/business class I have ever flown after 75 years on planes. Barely acceptable seats, terrible food, uninterested attendants, unavailable WiFi. I’ll never fly this airline again.

No communication with delayed and canceled flights. Completely in the dark for the whole experience.

Honestly the bathroom cabinet under sink fell out and was completely broken. The floor or walkway was worn out and it smelled wierd. But the seats were terrible for comfort. I truly hope that my trip home in February is better.

We sat on the tarmac for so long when we got to SeaTac that half the plane missed their connections.

Poor, no one with Alaska Airlines is in a hurry to do anything. Slow, lack of intent, inconsistent.

Dropping off of the checked bags took way longer than it should have. The agent for the pre-tagged and ready to drop off line was gone and didn't come back for about 15 minutes. The other bag check lines were barely moving. Agents were standing around and not much was getting done. Everything else about the flight was great.

I liked that the crew was friendly, we left and arrived at near scheduled times, plenty of on-board crew to handle the cabin service for the flight and I found the price of my airline ticket to be excellent!

Had no way to see what gate came in on or what gate connecting flight would take off.

The small ej plane didn’t have any entertainment aside from the stuff on the Alaska website that has to be accessed from your own device. But everything else was just great.

Check in online didn't accept my confirmation number so i could only check in with assistance at the airport and ended up with s creepy middle seat.

I didn't take this flight. I changed the flight. Why am I getting surveys and notifications on flights that I change. Seems like a defect with Kayak.

Delta One is extraordinary. I fly business when somebody hires me. I just wonder why there is such a chasm between business class and the insanely inhumane and nonsensical coach. The seats are not large enough to fit even my tiny wife. We fly 10% of what we did because we don’t want to pay 5-10 k but for $400 it’s unbearable. It seems like the accountants took over and made stupid decisions. Screw in 20 extra seats and make it so unbearable that people fly 90% less. Just put the damn price up and put some proper chairs in. But business, yay.

Timing, quality of service, promptness and courtesy of the staff

It was last minute due to weather - considering - it was amazing! Good smiles, friendly staff and they were making sure we knew what was going on when and where.

delta last minute gave me a boarding pass for a different flight with no confirmation that they were changing it

The service from the flight attendants were of supreme quality. They greeted and treated everyone with a wide smile. This is totally absent nowadays. Kudos to them!!!!

Excellent flight and got us around tough weather. Only issue was seat TV did not work and crew tried to reboot.

Very large passenger too space from my own seat. Arm board couldn’t be lowered because of his size. It wads very uncomfortable trip, as the flight was full couldn’t move anywhere having back pain because of the position in which I was the entire flight.

was sitting in the jet bridge for 10 minutes in -20 degree weather waiting for my bag

Outdated equipment in disrepair, wifi inoperable. Broken seats, taped air vents, generally poor condition, the 717 showed its age and lack of upkeep.

Seated dude next to me even though lots of empty rows. But main thing was we sat on the tarmac after landing for 30 minutes because of, in the words of the dude who sat next to me, “operational incompetence”. We got changing directions about where to pick up gate checked bags. Pilot and flight attendant were awesome though.

It was a pretty standard flight... until the almost hour and a half spent on the taxi way. I get that the weather has been poor but the delay had nothing to do with the weather and more to do with a plane with several issues tying up the gate. I get that that happens from time to time but this has been EVERY flight I've been on for the past 5 years and I fly 3 to 5 times a year. This isn't just United... it's American, it's Delta. It's an issue with the entire industry. I work for UPS and packages on a cargo plane get better service than people do these days. Anymore I HATE flying.

Perfect flight. Smooth flight. Arrived 20 minutes early at destination. Excellent service.

The flights were on time which was great give. It was holiday travel season and there’d been some weather issues. The only complaint and this is every time with United is the terrible seat design. The head rest is not built for comfort and having my neck bent forward for a cross country trip reminded me while I try not to take United flights as a rule.

Everything was absolutely wonderful from check in to baggage claim. Staff was very professional and sweet. Will definitely recommend United to family and friends.

They did the one thing that really matters - got to Chicago early.

The flight was on time. I generally don’t drink or eat on short flights and the seats were good and the flight attendants were friendly. That’s all I expect

It was nice to have gotten up upgraded to first class with a meal on a three hour flight

Very bad! They kept delaying my flight and wouldn’t do anything about it

Door to door, the crew and staff were amazing. It was a stressful travel day with delays, but they were focused on customers and doing what they could to get us to our destinations.

Update to handle the delay was very bad, crews no smiles or welcome or thanks. Don’t care attitude

Pilot navigated severe weather/snow storm with skill. Described his intentions clearly

Little warm on the plane and delayed for an hour

So excited very proud first of all I wanna thank kayak all updates very professional and fast alart And amazing cabin crew so nice to me they deserve big salute

The boarding process needs to be fixed. The zone don't work, especially when there is hardly anyone in zones 3, 4,and 5, leaving the majority of the passengers backed up in the aisle, especially because passengers seated near the front are blocking passengers who are seated in the rear of the plane. It would also help if the size of carry on bags was more strictly enforced.

Awful. They won’t help me with anything. I booked on American but they abdicated to Iberia. The ticket was overpriced. Everything negative

I enjoyed the extra leg room compared to other airlines. The first stewards made my daughter’s birthday special by giving her an extra snack. Then the last one coming home from Chicago to Appleton made our night really enjoyable Thanks for making our trip enjoyable

It was good..clean, comfy seat. Friendly warm welcoming crew. Was able to check my cabin luggage at the gate which I was able to pickup in a decent time from baggage claim. The app gave all updates from delays to baggage claim info. Overall smooth flight.

It was a typical flight. We had a delay which seems to be the normality now. And we had no in flight service due to conditions.

After we landed we sat on the tarmac for 1.5 hours waiting to get to our gate. Ridiculous.

Everything you need to know for your flight from Missoula to Illinois

Information on your arrival and departure airports