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Missoula

$108+ Cheap flights from Illinois to Missoula (MSO)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/11. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — MSO
Dec 10 — Dec 171
Wed 12/10
Wed 12/17
1 adult, Economy
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Cheap flight deals from Illinois to Missoula

Keep the following information in mind while searching for Illinois to Missoula flight deals. Data was last updated November 10, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$258
(Alaska Airlines)

One-way from

$108
(Kiwi.com)

Popular in

December

Cheapest in

August

Average price

$356

Good round-trip deal

$220 or less
Provider with most accurate pricing for Chicago (CHI)-Missoula Johnson-Bell Field flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Missoula Johnson-Bell Field flights.
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From Illinois to Missoula Johnson-Bell Field
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One-way flight from Illinois to Missoula Johnson-Bell Field
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Highest demand for flights based on searches. 9% potential increase in price ($47 potential increase over avg. RT price).
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Cheapest flight prices on average. 7% potential price decrease ($29 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Price to beat on a round-trip flight from Illinois to Missoula Johnson-Bell Field.
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Find flight deals from Illinois to Missoula

Cheapest flights from Illinois to Missoula
Explore the most affordable flight options available from Illinois to Missoula. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 10, 2025.

This Kiwi.com deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/24:58 pmORD - MSO
1 stop20h 23mMultiple Airlines
Sat 12/69:02 pmMSO - ORD
2 stops32h 03mMultiple Airlines
Deal found 11/9$286
This Alaska Airlines deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/610:00 amORD - MSO
1 stop15h 26mAlaska Airlines
Sat 12/134:22 pmMSO - ORD
1 stop6h 37mAlaska Airlines
Deal found 11/8$298
This Kissandfly.com deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/247:00 amORD - MSO
1 stop6h 54mHawaiian Airlines
Wed 12/315:20 amMSO - ORD
1 stop6h 49mHawaiian Airlines
Deal found 11/9$305
This Alaska Airlines deal was found by Cheapflights users on 11/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/126:00 amORD - MSO
1 stop7h 32mAlaska Airlines
Mon 12/155:30 amMSO - ORD
1 stop6h 39mAlaska Airlines
Deal found 11/7$322
This Alaska Airlines deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/67:00 amSTL - MSO
1 stop9h 32mAlaska Airlines
Sat 12/136:29 amMSO - STL
1 stop6h 58mAlaska Airlines
Deal found 11/8$353
This Delta deal was found by Cheapflights users on 11/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/76:15 amSTL - MSO
1 stop7h 18mDelta
Sun 12/145:00 amMSO - STL
1 stop7h 30mDelta
Deal found 11/7$372
This Delta deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/67:20 amORD - MSO
1 stop6h 13mDelta
Sat 12/135:00 amMSO - ORD
2 stops10h 48mDelta
Deal found 11/8$376
This Delta deal was found by Cheapflights users on 11/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1212:50 pmMDW - MSO
2 stops12h 46mDelta
Mon 12/155:00 amMSO - MDW
2 stops12h 00mDelta
Deal found 11/7$381
This Alaska Airlines deal was found by Cheapflights users on 11/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/193:33 pmORD - MSO
1 stop9h 09mAlaska Airlines
Fri 12/266:00 amMSO - ORD
1 stop23h 29mAlaska Airlines
Deal found 11/7$386
This Delta deal was found by Cheapflights users on 11/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/105:08 pmMLI - MSO
2 stops32h 28mDelta
Sat 12/135:00 amMSO - MLI
2 stops10h 19mDelta
Deal found 11/7$388
This Alaska Airlines deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/236:00 amORD - MSO
1 stop18h 42mAlaska Airlines
Tue 1/66:00 amMSO - ORD
1 stop10h 12mAlaska Airlines
Deal found 11/9$401
This Kiwi.com deal was found by Cheapflights users on 11/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/71:16 pmSTL - MSO
1 stop21h 15mMultiple Airlines
Sun 12/1410:26 pmMSO - STL
2 stops47h 07mMultiple Airlines
Deal found 11/7$410

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated November 10, 2025.
Use the filters below to find and compare flights from Illinois to Missoula that are best for you.

Fly from

Illinois

Fly to

Missoula

Route

Depart

Return

Price

ChicagoMissoula

ORD - MSO

ORDMSO

Chicago O'Hare Intl

Sat 1/3

9:55 pm-7:10 pm

1 stop22h 15m

Missoula Johnson-Bell Field

Fri 1/9

10:53 am-9:01 pm

1 stop9h 08m

$274

ChicagoMissoula

ORD - MSO

ORDMSO

Chicago O'Hare Intl

Thu 2/26

7:45 am-1:52 pm

1 stop7h 07m

Missoula Johnson-Bell Field

Mon 3/2

6:30 pm-5:04 am

1 stop9h 34m

$290

ChicagoMissoula

ORD - MSO

ORDMSO

Chicago O'Hare Intl

Sat 12/6

10:00 am-12:26 am

1 stop15h 26m

Missoula Johnson-Bell Field

Sat 12/13

4:22 pm-11:59 pm

1 stop6h 37m

$298

ChicagoMissoula

ORD - MSO

ORDMSO

Chicago O'Hare Intl

Tue 12/2

4:58 pm-12:21 pm

1 stop20h 23m

Missoula Johnson-Bell Field

Sat 12/6

9:02 pm-11:42 am

1 stop13h 40m

$309

ChicagoMissoula

ORD - MSO

ORDMSO

Chicago O'Hare Intl

Fri 12/12

6:00 am-12:32 pm

1 stop7h 32m

Missoula Johnson-Bell Field

Mon 12/15

5:30 am-1:09 pm

1 stop6h 39m

$322

ChicagoMissoula

ORD - MSO

ORDMSO

Chicago O'Hare Intl

Sat 1/10

5:20 pm-11:35 pm

1 stop7h 15m

Missoula Johnson-Bell Field

Fri 1/16

5:00 am-12:41 pm

1 stop6h 41m

$331

ChicagoMissoula

ORD - MSO

ORDMSO

Chicago O'Hare Intl

Sat 4/25

7:15 am-12:33 pm

1 stop6h 18m

Missoula Johnson-Bell Field

Wed 4/29

5:40 am-12:21 pm

1 stop5h 41m

$331

ChicagoMissoula

ORD - MSO

ORDMSO

Chicago O'Hare Intl

Sat 4/25

5:00 pm-11:55 pm

1 stop7h 55m

Missoula Johnson-Bell Field

Wed 4/29

2:35 pm-11:58 pm

1 stop8h 23m

$331

St. LouisMissoula

STL - MSO

STLMSO

Lambert-St Louis

Sat 12/6

7:00 am-3:32 pm

1 stop9h 32m

Missoula Johnson-Bell Field

Sat 12/13

6:29 am-2:27 pm

1 stop6h 58m

$353

St. LouisMissoula

STL - MSO

STLMSO

Lambert-St Louis

Mon 4/20

7:00 am-1:43 pm

1 stop7h 43m

Missoula Johnson-Bell Field

Wed 4/22

6:35 am-2:11 pm

1 stop6h 36m

$371

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/8

Showing 1-10 of 41 results
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Best time to book a flight from Illinois to Missoula

Have a flexible travel schedule? Discover the best time to fly to Missoula from Illinois with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest month to book a flight from Illinois to Missoula?

Currently, October is the cheapest month in which you can book a flight from Illinois to Missoula (average of $217). Flying from Illinois to Missoula in January is currently the most expensive (average of $436). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IL to MSO?

Find hourly flight availability from Illinois to Missoula. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 10, 2025.

When flying from Illinois to Missoula, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 49% versus a flight in the morning.

Related info for your journey

Find useful and relevant information for your journey from Illinois to Missoula. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Missoula from Illinois?

    Missoula Johnson-Bell Field (MSO) is the airport you will fly into if you book a flight from Illinois to Missoula. It is only a 5.5 mi journey from Johnson-Bell Field (MSO) to Missoula’s city center.

  • How long is the flight from Illinois to Missoula?

    Airlines like Alaska Airlines, Delta, and United Airlines fly from Illinois to Missoula in about 7h 07m. The time it takes to get you to your destination can typically vary by up to 4h 21m. There are 1328 mi between Illinois and Missoula. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the most popular routes from Illinois to Missoula?

    The most popular flight routes from Illinois to Missoula are Chicago O'Hare Intl - Missoula Johnson-Bell Field, Chicago Midway - Missoula Johnson-Bell Field and Lambert-St Louis - Missoula Johnson-Bell Field.

  • What are the most reliable airlines from Illinois to Missoula?

    No one likes to see their flight delayed. When booking a flight from Illinois to Missoula consider choosing American Airlines (88%), Alaska Airlines (88%) or Envoy Air (88%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Illinois to Missoula?

    The cheapest flight price from Illinois to Missoula is $205. On average you can expect to pay $349. The most popular route, (Chicago O'Hare Intl - Missoula Johnson-Bell Field), can usually be booked for $274.

  • Can I find deals for flights from Illinois to Missoula that include hotel bookings?

    Yes. In addition to deals on Illinois to Missoula flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Missoula?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Missoula.

  • Can I find deals for business class flights from Illinois to Missoula?

    Yes. Cheapflights offers flight deals from Illinois to Missoula by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Illinois to Missoula?

    Currently, October is the cheapest month in which you can book a flight from Illinois to Missoula (average of $217). Flying from Illinois to Missoula in January is currently the most expensive (average of $436). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 4 airlines flying from Illinois to Missoula

Discover the top 4 airlines that operate flights from Illinois to Missoula. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated November 10, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$229Average$321FlexibilityNo cancel feeOn-time71%
DeltaCheapest$248Average$268FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$270Average$435FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$271Average$443FlexibilityNo cancel feeOn-time69%

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