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Missoula

$132+ 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 12/11. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — MSO
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
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 September 17, 2025.

Round-trip from

$249
(American Airlines)

One-way from

$132
(Kiwi.com)

Popular in

December

Cheapest in

August

Average price

$358

Good round-trip deal

$339 or less
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. 16% potential increase in price ($88 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($28 potential savings vs. average RT price).
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Average for round-trip flights in September 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 September 17, 2025.

This United Airlines deal was found by Cheapflights users on 9/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/228:52 amORD - MSO
Nonstop3h 58mUnited Airlines
Sat 10/2512:31 pmMSO - ORD
Nonstop3h 34mUnited Airlines
Deal found 9/17$249
This United Airlines deal was found by Cheapflights users on 9/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/188:52 amORD - MSO
Nonstop3h 58mUnited Airlines
Fri 10/242:33 pmMSO - ORD
1 stop5h 57mUnited Airlines
Deal found 9/16$259
This Alaska Airlines deal was found by Cheapflights users on 9/16. 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.
Thu 10/166:00 amORD - MSO
1 stop7h 18mAlaska Airlines
Thu 10/234:12 pmMSO - ORD
1 stop6h 47mAlaska Airlines
Deal found 9/16$269
This Delta deal was found by Cheapflights users on 9/17. 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.
Tue 10/217:36 pmORD - MSO
1 stop5h 41mDelta
Sat 10/255:25 amMSO - ORD
2 stops10h 25mDelta
Deal found 9/17$274
This United Airlines deal was found by Cheapflights users on 9/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/165:01 amORD - MSO
1 stop5h 56mUnited Airlines
Fri 10/2412:31 pmMSO - ORD
Nonstop3h 34mUnited Airlines
Deal found 9/16$279
This Delta deal was found by Cheapflights users on 9/16. 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.
Thu 11/67:36 pmORD - MSO
1 stop5h 41mDelta
Sun 11/95:25 amMSO - ORD
2 stops12h 01mDelta
Deal found 9/16$286
This United Airlines deal was found by Cheapflights users on 9/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/308:52 amORD - MSO
Nonstop3h 58mUnited Airlines
Sat 10/412:31 pmMSO - ORD
Nonstop3h 34mUnited Airlines
Deal found 9/15$289
This United Airlines deal was found by Cheapflights users on 9/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/175:01 amORD - MSO
1 stop5h 56mUnited Airlines
Wed 10/2212:31 pmMSO - ORD
Nonstop3h 34mUnited Airlines
Deal found 9/16$304
This Alaska Airlines deal was found by Cheapflights users on 9/15. 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 9/3010:00 amORD - MSO
1 stop9h 00mAlaska Airlines
Sat 10/42:07 pmMSO - ORD
1 stop8h 52mAlaska Airlines
Deal found 9/15$308
This Delta deal was found by Cheapflights users on 9/15. 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 10/35:35 pmORD - MSO
1 stop7h 11mDelta
Sun 10/55:30 amMSO - ORD
1 stop5h 20mDelta
Deal found 9/15$309
This Delta deal was found by Cheapflights users on 9/15. 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.
Tue 9/301:22 pmORD - MSO
2 stops11h 24mDelta
Sat 10/45:45 amMSO - ORD
1 stop5h 15mDelta
Deal found 9/15$314
This United Airlines deal was found by Cheapflights users on 9/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/308:39 amPIA - MSO
1 stop8h 31mUnited Airlines
Sat 10/42:33 pmMSO - PIA
1 stop5h 32mUnited Airlines
Deal found 9/15$319

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 September 17, 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

Wed 10/22

8:52 am-11:50 am

Nonstop3h 58m

Missoula Johnson-Bell Field

Sat 10/25

6:25 am-1:12 pm

1 stop5h 47m

$259

ChicagoMissoula

ORD - MSO

ORDMSO

Chicago O'Hare Intl

Sat 10/18

8:52 am-11:50 am

Nonstop3h 58m

Missoula Johnson-Bell Field

Fri 10/24

2:33 pm-9:30 pm

1 stop5h 57m

$259

ChicagoMissoula

ORD - MSO

ORDMSO

Chicago O'Hare Intl

Fri 10/17

7:00 am-1:27 pm

1 stop7h 27m

Missoula Johnson-Bell Field

Tue 10/21

6:37 am-5:03 pm

1 stop9h 26m

$269

ChicagoMissoula

ORD - MSO

ORDMSO

Chicago O'Hare Intl

Thu 11/6

7:36 pm-12:17 am

1 stop5h 41m

Missoula Johnson-Bell Field

Sun 11/9

5:25 am-12:38 pm

1 stop6h 13m

$269

ChicagoMissoula

ORD - MSO

ORDMSO

Chicago O'Hare Intl

Thu 10/16

6:00 am-12:18 pm

1 stop7h 18m

Missoula Johnson-Bell Field

Thu 10/23

4:12 pm-11:59 pm

1 stop6h 47m

$269

ChicagoMissoula

ORD - MSO

ORDMSO

Chicago O'Hare Intl

Thu 10/16

5:01 am-9:57 am

1 stop5h 56m

Missoula Johnson-Bell Field

Fri 10/24

2:33 pm-10:39 pm

1 stop7h 06m

$269

ChicagoMissoula

ORD - MSO

ORDMSO

Chicago O'Hare Intl

Tue 10/21

7:50 am-12:27 pm

1 stop5h 37m

Missoula Johnson-Bell Field

Sat 10/25

5:25 am-4:50 pm

2 stops10h 25m

$274

ChicagoMissoula

ORD - MSO

ORDMSO

Chicago O'Hare Intl

Fri 10/17

5:01 am-9:57 am

1 stop5h 56m

Missoula Johnson-Bell Field

Wed 10/22

12:31 pm-5:05 pm

Nonstop3h 34m

$304

ChicagoMissoula

ORD - MSO

ORDMSO

Chicago O'Hare Intl

Thu 10/16

12:28 pm-9:36 pm

2 stops34h 08m

Missoula Johnson-Bell Field

Fri 10/24

10:26 pm-12:17 am

1 stop24h 51m

$309

ChicagoMissoula

ORD - MSO

ORDMSO

Chicago O'Hare Intl

Thu 11/20

1:55 pm-9:47 pm

1 stop8h 52m

Missoula Johnson-Bell Field

Sun 11/23

5:10 pm-11:59 pm

1 stop5h 49m

$317

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 51 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 $365). Flying from Illinois to Missoula in March is currently the most expensive (average of $505). 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 September 17, 2025.

When flying from Illinois to Missoula, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Illinois to Missoula

Explore weekly flight availability from Illinois to Missoula. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated September 17, 2025.

The most flights from USIL to MSO are scheduled on a Monday (6 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (6 on average).

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 United Airlines, Alaska Airlines, and Delta fly from Illinois to Missoula in about 3h 58m. The time it takes to get you to your destination can typically vary by up to 8h 37m. 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 cheapest airlines to fly from Illinois to Missoula one-way?

    $135 is the cheapest one-way deal found within the past few days, from Alaska Airlines. You may also be able to find cheap deals on Hawaiian Airlines and United Airlines, with prices starting from $185 and $191, respectively.

  • 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 Alaska Airlines (80%), United Airlines (76%) or American Airlines (75%) 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 $320. On average you can expect to pay $440. The most popular route, (Chicago O'Hare Intl - Missoula Johnson-Bell Field), can usually be booked for $259.

  • 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 $365). Flying from Illinois to Missoula in March is currently the most expensive (average of $505). 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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$229Average$509FlexibilityNo cancel feeOn-time71%
DeltaCheapest$248Average$321FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$267Average$422FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$271Average$477FlexibilityNo cancel feeOn-time69%

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