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Cheap flights from Illinois to Missoula from $153

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Missoula departing on 8/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Illinois to Missoula

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
9:54 am - 12:42 pm
ORD
-
MSO
3h 48mnonstop
American Airlines Logo
1:25 pm - 12:18 am
MSO
-
ORD
9h 53m
1 stop
$319American Airlines
Tue, Aug 25 - Thu, Sep 3
Delta Logo
7:13 pm - 11:35 pm
MDW
-
MSO
5h 22m
1 stop
Delta Logo
6:00 am - 1:20 pm
MSO
-
MDW
6h 20m
1 stop
$329Delta
Sat, Sep 19 - Sat, Oct 3
Delta Logo
7:44 pm - 12:18 am
ORD
-
MSO
5h 34m
1 stop
Delta Logo
5:30 am - 11:59 am
MSO
-
ORD
5h 29m
1 stop
$329Delta
Mon, Aug 17 - Mon, Aug 24
Delta Logo
1:51 pm - 11:12 pm
MDW
-
MSO
10h 21m
2 stops
Delta Logo
6:00 am - 1:10 pm
MSO
-
MDW
6h 10m
1 stop
$334Delta
Sat, Aug 22 - Sat, Aug 29
Delta Logo
5:10 pm - 12:18 am
ORD
-
MSO
8h 08m
2 stops
Delta Logo
5:30 am - 11:55 am
MSO
-
ORD
5h 25m
1 stop
$334Delta
Thu, Sep 17 - Sun, Sep 27
United Airlines Logo
5:00 am - 9:57 am
ORD
-
MSO
5h 57m
1 stop
United Airlines Logo
12:21 pm - 4:52 pm
MSO
-
ORD
3h 31mnonstop
$357United Airlines
Fri, Sep 18 - Fri, Sep 25
United Airlines Logo
5:00 am - 9:57 am
ORD
-
MSO
5h 57m
1 stop
United Airlines Logo
5:19 pm - 11:59 pm
MSO
-
ORD
5h 40m
1 stop
$367United Airlines
Fri, Sep 18 - Fri, Sep 25
Multiple Airlines Logo
7:03 pm - 9:34 am
STL
-
MSO
15h 31m
1 stop
Multiple Airlines Logo
10:24 am - 8:57 am
MSO
-
STL
21h 33m
2 stops
$452Multiple Airlines
Wed, Jul 22 - Sun, Jul 26
Alaska Airlines Logo
6:35 am - 3:17 pm
STL
-
MSO
9h 42m
1 stop
Alaska Airlines Logo
4:16 pm - 11:59 pm
MSO
-
STL
6h 43m
1 stop
$461Alaska Airlines
Mon, Sep 7 - Mon, Sep 14
Alaska Airlines Logo
6:35 am - 3:17 pm
STL
-
MSO
9h 42m
1 stop
Alaska Airlines Logo
7:00 am - 8:52 pm
MSO
-
STL
12h 52m
2 stops
$486Alaska Airlines
Mon, Sep 7 - Mon, Sep 14

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American Airlines flights from Illinois to Missoula

Our best American Airlines deals on Illinois to Missoula flight tickets
American Airlines
Oct 1
ORD9:59 amChicago O'Hare Intl
3h 56m
MSO12:55 pmMissoula Johnson-Bell Field
Oct 4
MSO12:45 pmMissoula Johnson-Bell Field
3h 40m
ORD5:25 pmChicago O'Hare Intl
$309
American Airlines
Aug 25
ORD9:54 amChicago O'Hare Intl
3h 48m
MSO12:42 pmMissoula Johnson-Bell Field
Sep 3
MSO1:25 pmMissoula Johnson-Bell Field
9h 53m
1 stop
ORD12:18 amChicago O'Hare Intl
$319
American Airlines
Aug 25
ORD9:54 amChicago O'Hare Intl
3h 48m
MSO12:42 pmMissoula Johnson-Bell Field
Sep 3
MSO1:18 pmMissoula Johnson-Bell Field
3h 41m
ORD5:59 pmChicago O'Hare Intl
$348

Delta flights from Illinois to Missoula

Our best Delta deals on Illinois to Missoula flight tickets
Delta
Aug 17
ORD7:44 pmChicago O'Hare Intl
5h 34m
1 stop
MSO12:18 amMissoula Johnson-Bell Field
Aug 24
MSO5:30 amMissoula Johnson-Bell Field
5h 29m
1 stop
ORD11:59 amChicago O'Hare Intl
$329
Delta
Aug 22
MDW1:51 pmChicago Midway
10h 21m
2 stops
MSO11:12 pmMissoula Johnson-Bell Field
Aug 29
MSO6:00 amMissoula Johnson-Bell Field
6h 10m
1 stop
MDW1:10 pmChicago Midway
$334
Delta
Nov 23
ORD1:15 pmChicago O'Hare Intl
12h 16m
2 stops
MSO12:31 amMissoula Johnson-Bell Field
Nov 27
MSO12:50 pmMissoula Johnson-Bell Field
10h 00m
2 stops
ORD11:50 pmChicago O'Hare Intl
$339

momondo Fare Finder

 
Customize your flight search to find flights from Illinois to Missoula that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated June 30, 2026.
Use the filters below to find and compare flights from Illinois to Missoula that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoMissoula

ORD - MSO

ORDMSO

Chicago O'Hare Intl

Tue 8/25

9:54 am-12:42 pm

Nonstop3h 48m

Missoula Johnson-Bell Field

Thu 9/3

1:25 pm-12:18 am

1 stop9h 53m

$319

ChicagoMissoula

MDW - MSO

MDWMSO

Chicago Midway

Sat 9/19

7:13 pm-11:35 pm

1 stop5h 22m

Missoula Johnson-Bell Field

Sat 10/3

6:00 am-1:20 pm

1 stop6h 20m

$329

ChicagoMissoula

ORD - MSO

ORDMSO

Chicago O'Hare Intl

Mon 8/17

7:44 pm-12:18 am

1 stop5h 34m

Missoula Johnson-Bell Field

Mon 8/24

5:30 am-11:59 am

1 stop5h 29m

$329

ChicagoMissoula

MDW - MSO

MDWMSO

Chicago Midway

Sat 8/22

1:51 pm-11:12 pm

2 stops10h 21m

Missoula Johnson-Bell Field

Sat 8/29

6:00 am-1:10 pm

1 stop6h 10m

$334

ChicagoMissoula

ORD - MSO

ORDMSO

Chicago O'Hare Intl

Thu 9/17

5:10 pm-12:18 am

2 stops8h 08m

Missoula Johnson-Bell Field

Sun 9/27

5:30 am-11:55 am

1 stop5h 25m

$334
Quickest round-trip

ChicagoMissoula

ORD - MSO

ORDMSO

Chicago O'Hare Intl

Fri 9/18

5:00 am-9:57 am

1 stop5h 57m

Missoula Johnson-Bell Field

Fri 9/25

12:21 pm-4:52 pm

Nonstop3h 31m

$357

ChicagoMissoula

ORD - MSO

ORDMSO

Chicago O'Hare Intl

Fri 9/18

5:00 am-9:57 am

1 stop5h 57m

Missoula Johnson-Bell Field

Fri 9/25

5:19 pm-11:59 pm

1 stop5h 40m

$367

St. LouisMissoula

STL - MSO

STLMSO

Lambert-St Louis

Wed 7/22

7:03 pm-9:34 am

1 stop15h 31m

Missoula Johnson-Bell Field

Sun 7/26

10:24 am-8:57 am

2 stops21h 33m

$452

St. LouisMissoula

STL - MSO

STLMSO

Lambert-St Louis

Mon 9/7

6:35 am-3:17 pm

1 stop9h 42m

Missoula Johnson-Bell Field

Mon 9/14

4:16 pm-11:59 pm

1 stop6h 43m

$461

St. LouisMissoula

STL - MSO

STLMSO

Lambert-St Louis

Mon 9/7

6:35 am-3:17 pm

1 stop9h 42m

Missoula Johnson-Bell Field

Mon 9/14

7:00 am-8:52 pm

2 stops12h 52m

$486

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Missoula from

How to get the cheapest flight ticket from Illinois to Missoula

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Missoula?

The month of September is, on average, the cheapest month to fly to Missoula from Illinois, with most prices found around $191. If you are unable to visit Missoula during the month of September, then departing from Illinois during the month August is also very affordable. Most momondo users find prices during this month for around $193.

What is the cheapest day to depart on your flight to Missoula?

On average, the least expensive day to fly to Missoula from Illinois is on a Monday. momondo users have found tickets for Monday departures for as low as $393. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Thursday is the most expensive day to depart from Illinois because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $479.

What is the cheapest time of day to depart on your flight to Missoula?

The cheapest time of day to fly to Missoula is in the evening when flights can be purchased for as low as $390. Flights in the morning are often more expensive with an average ticket price of $438.

What is the cheapest Illinois to Missoula Johnson-Bell Field flight route?

Fly from Chicago O'Hare Intl to Missoula Johnson-Bell Field for the best Illinois - Missoula Johnson-Bell Field flight prices

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

You are more likely to see cheaper flights to Missoula from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Missoula for around $454 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Missoula from Illinois for as low as $291 on momondo.

What cabin class options are available on Illinois to Missoula flights?

There are 4 cabin classes available to choose from on Illinois to Missoula flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Illinois to Missoula flights?

You could potentially save up to 15% on your flight if you consider stops on a Illinois to Missoula flight.

Cheap Illinois to Missoula flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Missoula

Best Price Found

$235

Fastest flight time

3h 42m

Direct flights

Every day

Airports in Missoula

1 airport
The best one-way flight to Missoula from Illinois in the past 72 hours is $235. The best round-trip flight deal from Illinois to Missoula found on momondo in the last 72 hours is $393.
The fastest flight from Illinois to Missoula takes 3h 42m
Direct flights go from Illinois to Missoula every day.
There is 1 airport in Missoula. From Illinois there are direct flights to Missoula Johnson-Bell Field (MSO).
Search flight deals

Frequently asked questions about flying from Illinois to Missoula

  • When did momondo last update prices for flights from Illinois to Missoula Johnson-Bell Field Airport?

    Prices for flights from Illinois to Missoula Johnson-Bell Field Airport are updated daily.

  • How many operators does momondo search for flights from Illinois to Missoula Johnson-Bell Field Airport?

  • How old do you have to be to fly from Illinois to Missoula Johnson-Bell Field Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to Missoula Johnson-Bell Field Airport.

  • What documentation or ID do you need to fly to Missoula Johnson-Bell Field Airport?

    The required travel and health documents for your Missoula Johnson-Bell Field Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Missoula Johnson-Bell Field Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Illinois to Missoula?

Best airlines flying from Illinois to Missoula

Compare and see reviews for airlines that fly from Illinois to Missoula with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $249Free CancellationRating
7.1
11,762 reviews
Search American Airlines flights
United AirlinesPriceFrom $271Free CancellationRating
7.4
9,901 reviews
Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to Missoula?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Missoula from Illinois.

Can I find flights from Illinois to Missoula with flexible booking policies on momondo?

All flight searches from Illinois to Missoula on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Illinois to Missoula?

Once all potential Illinois to Missoula flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Illinois to Missoula right now. Can momondo alert me if prices change?

Price alerts on flights to Missoula from Illinois are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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