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$119+ Cheap flights from Missoula (MSO) to Illinois

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 2/9. Fares are subject to change and may not be available on all flights or dates of travel.
MSO — ORD
Jan 14 — Jan 211
Wed 1/14
Wed 1/21
1 adult, Economy
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Cheap flight deals from Missoula to Illinois

Cheapest flights from Missoula to Illinois
Explore the most affordable flight options available from Missoula to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 15, 2025.

This United Airlines deal was found by Cheapflights users on 12/15. 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.
Thu 12/252:38 pmMSO - ORD
1 stop5h 41mUnited Airlines
Fri 1/23:42 pmORD - MSO
1 stop6h 59mUnited Airlines
Deal found 12/15$464
This Delta deal was found by Cheapflights users on 12/15. 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.
Thu 12/255:20 amMSO - ORD
2 stops13h 18mDelta
Fri 1/24:01 pmORD - MSO
1 stop5h 39mDelta
Deal found 12/15$544
This American Airlines deal was found by Cheapflights users on 12/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/271:18 pmMSO - ORD
Nonstop3h 32mAmerican Airlines
Sat 1/39:53 amORD - MSO
Nonstop3h 55mAmerican Airlines
Deal found 12/15$556
This United Airlines deal was found by Cheapflights users on 12/15. 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.
Thu 12/252:38 pmMSO - PIA
1 stop5h 09mUnited Airlines
Thu 1/13:30 pmPIA - MSO
2 stops31h 11mUnited Airlines
Deal found 12/15$573
This United Airlines deal was found by Cheapflights users on 12/14. 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 12/196:00 amMSO - ORD
1 stop6h 19mUnited Airlines
Fri 12/193:35 pmORD - MSO
2 stops25h 45mUnited Airlines
Deal found 12/14$575
This United Airlines deal was found by Cheapflights users on 12/13. 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 12/252:38 pmMSO - ORD
1 stop5h 41mUnited Airlines
Thu 1/12:31 pmORD - MSO
1 stop8h 10mUnited Airlines
Deal found 12/13$595
This American Airlines deal was found by Cheapflights users on 12/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/251:18 pmMSO - ORD
Nonstop3h 32mAmerican Airlines
Thu 1/18:58 pmORD - MSO
1 stop25h 26mAmerican Airlines
Deal found 12/13$605
This American Airlines deal was found by Cheapflights users on 12/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/251:18 pmMSO - ORD
Nonstop3h 32mAmerican Airlines
Fri 1/29:53 amORD - MSO
Nonstop3h 55mAmerican Airlines
Deal found 12/13$621
This United Airlines deal was found by Cheapflights users on 12/13. 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 12/276:00 amMSO - ORD
1 stop16h 00mUnited Airlines
Sat 1/310:56 amORD - MSO
1 stop6h 24mUnited Airlines
Deal found 12/13$637
This United Airlines deal was found by Cheapflights users on 12/13. 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.
Sun 12/282:38 pmMSO - STL
1 stop6h 44mUnited Airlines
Sat 1/38:15 amSTL - MSO
2 stops14h 26mUnited Airlines
Deal found 12/13$651
This Delta deal was found by Cheapflights users on 12/13. 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 12/258:10 amMSO - MDW
1 stop8h 09mDelta
Fri 1/26:00 amMDW - MSO
2 stops12h 35mDelta
Deal found 12/13$1,004
This United Airlines deal was found by Cheapflights users on 12/15. 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.
Wed 12/242:38 pmMSO - MLI
1 stop5h 19mUnited Airlines
Sun 12/281:00 pmMLI - MSO
2 stops28h 10mUnited Airlines
Deal found 12/15$1,156

Find flight deals from Missoula to Illinois

Keep the following information in mind while searching for Missoula to Illinois flight deals. Data was last updated December 15, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$265
(Delta)

One-way from

$119
(Kiwi.com)

Popular in

January

Cheapest in

July

Average price

$456

Good round-trip deal

$329 or less

Good one-way deal

$314 or less
Provider with most accurate pricing for Missoula Johnson-Bell Field-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Missoula Johnson-Bell Field-Chicago (CHI) flights.
Search Deals
From Missoula Johnson-Bell Field to Illinois
Search Deals
One-way flight from Missoula Johnson-Bell Field to Illinois
Search Deals
Highest demand for flights based on searches. 26% potential increase in price ($140 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($29 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Missoula Johnson-Bell Field to Illinois.
Search Deals
Price to beat on a one-way flight from Missoula Johnson-Bell Field to Illinois.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Missoula to Illinois 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 December 15, 2025.
Use the filters below to find and compare flights from Missoula to Illinois that are best for you.

Fly from

Missoula

Fly to

Illinois

Route

Depart

Return

Price

MissoulaChicago

MSO - ORD

MSOORD

Missoula Johnson-Bell Field

Wed 4/8

5:04 am-12:23 pm

1 stop6h 19m

Chicago O'Hare Intl

Wed 4/15

6:59 pm-12:24 am

1 stop6h 25m

$265

MissoulaChicago

MSO - ORD

MSOORD

Missoula Johnson-Bell Field

Wed 2/11

6:23 am-5:10 pm

1 stop9h 47m

Chicago O'Hare Intl

Fri 2/13

3:54 pm-11:59 pm

1 stop9h 05m

$268

MissoulaChicago

MSO - ORD

MSOORD

Missoula Johnson-Bell Field

Thu 1/22

5:15 pm-11:59 pm

1 stop5h 44m

Chicago O'Hare Intl

Sun 1/25

2:36 pm-9:51 pm

1 stop8h 15m

$269

MissoulaChicago

MSO - ORD

MSOORD

Missoula Johnson-Bell Field

Tue 2/24

6:23 am-4:33 pm

1 stop9h 10m

Chicago O'Hare Intl

Fri 2/27

3:54 pm-11:59 pm

1 stop9h 05m

$269

MissoulaChicago

MSO - ORD

MSOORD

Missoula Johnson-Bell Field

Fri 4/10

2:35 pm-9:13 pm

1 stop5h 38m

Chicago O'Hare Intl

Mon 4/13

2:18 pm-9:39 pm

1 stop8h 21m

$269

MissoulaChicago

MSO - ORD

MSOORD

Missoula Johnson-Bell Field

Wed 1/21

4:20 pm-11:50 pm

1 stop6h 30m

Chicago O'Hare Intl

Mon 1/26

8:00 am-3:31 pm

1 stop8h 31m

$269

MissoulaChicago

MSO - ORD

MSOORD

Missoula Johnson-Bell Field

Fri 4/24

5:16 pm-11:57 pm

1 stop5h 41m

Chicago O'Hare Intl

Mon 4/27

2:18 pm-9:39 pm

1 stop8h 21m

$269

MissoulaChicago

MSO - ORD

MSOORD

Missoula Johnson-Bell Field

Sat 2/14

6:23 am-2:11 pm

1 stop6h 48m

Chicago O'Hare Intl

Wed 2/18

3:54 pm-11:59 pm

1 stop9h 05m

$269

MissoulaChicago

MSO - ORD

MSOORD

Missoula Johnson-Bell Field

Sat 4/18

8:00 am-4:36 pm

2 stops7h 36m

Chicago O'Hare Intl

Wed 4/22

6:59 pm-12:24 am

1 stop6h 25m

$274

MissoulaChicago

MSO - ORD

MSOORD

Missoula Johnson-Bell Field

Wed 1/21

5:00 am-1:38 pm

1 stop7h 38m

Chicago O'Hare Intl

Mon 1/26

10:35 am-8:14 pm

2 stops10h 39m

$274

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/12

Showing 1-10 of 40 results
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Best time to book a flight from Missoula to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Missoula 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 Missoula to Illinois

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

Currently, August is the cheapest month in which you can book a flight from Missoula to Illinois (average of $191). Flying from Missoula to Illinois in February is currently the most expensive (average of $346). 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 MSO to IL?

Find hourly flight availability from Missoula to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 15, 2025.

It’s typically best to fly out from Missoula to Illinois in the afternoon. Doing so could potentially save you 67% on the flight price compared to flying at noon, which is usually more expensive.

How much does it cost to fly round-trip from Missoula to Illinois?

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated December 15, 2025.
Read reviews from past customers who have flown Alaska Airlines, Delta, and United Airlines from Missoula to Illinois. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,451 reviews

Boarding

8.1

Entertainment

7.0

Crew

8.5

Comfort

7.8

Overall

8.0

Food

7.1

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Alaska Airlines
8.0
Very good
11,451 reviews
Alaska Airlines
8.0
Very good
11,451 reviews

Boarding

8.1

Entertainment

7.0

Crew

8.5

Comfort

7.8

Overall

8.0

Food

7.1

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Delta
7.9
Good
8,007 reviews
Alaska Airlines
8.0
Very good
11,451 reviews

Boarding

8.1

Entertainment

7.0

Crew

8.5

Comfort

7.8

Overall

8.0

Food

7.1

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
United Airlines
7.4
Good
9,092 reviews
Alaska Airlines
8.0
Very good
11,451 reviews

Boarding

8.1

Entertainment

7.0

Crew

8.5

Comfort

7.8

Overall

8.0

Food

7.1

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
American Airlines
7.2
Good
11,052 reviews
Alaska Airlines
8.0
Very good
11,451 reviews

Boarding

8.1

Entertainment

7.0

Crew

8.5

Comfort

7.8

Overall

8.0

Food

7.1

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.

Related info for your journey

Find useful and relevant information for your journey from Missoula to Illinois. 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 from for flights from Missoula to Illinois?

    If you book a flight to Illinois from Missoula, you will be flying from Johnson-Bell Field, which is the city’s only airport. Missoula Johnson-Bell Field (MSO) is located 5.5 mi from the center of Missoula.

  • How long is the flight from Missoula to Illinois?

    Airlines like Delta, Alaska Airlines, and United Airlines fly from Missoula to Illinois in about 5h 10m. The time it takes to get you to your destination can typically vary by up to 4h 37m. There are 1284 mi between Missoula and Illinois. 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 Missoula to Illinois one-way?

    For one-way options, check prices for Alaska Airlines. According to our data, you can fly for as low as $105. Users have also found prices from $127 and $130 on Delta and American Airlines, respectively.

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

    The most popular route from Missoula to Illinois is Missoula Johnson-Bell Field - Chicago O'Hare Intl. You may also consider Missoula Johnson-Bell Field - Lambert-St Louis or Missoula Johnson-Bell Field - Chicago Midway.

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

    Before booking your flight to Illinois from Missoula, check out the most reliable airlines to get you to your destination on time: American Airlines (100%), Qatar Airways (100%), Alaska Airlines( 100%).

  • What are the cheapest flights from Missoula to Illinois?

    On average you can expect to pay $430 for a flight from Missoula to Illinois. The cheapest flight overall is $208 while the most popular route, (Missoula Johnson-Bell Field - Chicago O'Hare Intl) is currently priced at $269.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Missoula to Illinois 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 Missoula to Illinois?

    Currently, August is the cheapest month in which you can book a flight from Missoula to Illinois (average of $191). Flying from Missoula to Illinois in February is currently the most expensive (average of $346). 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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Alternative routes for Missoula to Illinois

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Top 4 airlines flying from Missoula to Illinois

Discover the top 4 airlines that operate flights from Missoula to Illinois. 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 December 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$191Average$344FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$268Average$412FlexibilityNo cancel feeOn-time69%
DeltaCheapest$288Average$362FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$349Average$469FlexibilityNo cancel feeOn-time75%

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