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$99+ 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 8/29. Fares are subject to change and may not be available on all flights or dates of travel.
MSO — ORD
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap flight deals from Missoula to Illinois

Keep the following information in mind while searching for Missoula to Illinois flight deals. Data was last updated June 12, 2025.

Round-trip from

$221
(American Airlines)

One-way from

$99
(Mytrip)

Popular in

February

Cheapest in

November

Average price

$339

Good round-trip deal

$356 or less

Good one-way deal

$211 or less
From Missoula Johnson-Bell Field to Illinois
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One-way flight from Missoula Johnson-Bell Field to Illinois
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Highest demand for flights based on searches. 9% potential increase in price ($39 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Price to beat on a round-trip flight from Missoula Johnson-Bell Field to Illinois.
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Price to beat on a one-way flight from Missoula Johnson-Bell Field to Illinois.
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Find 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 June 12, 2025.

This American Airlines deal was found by Cheapflights users on 6/11. 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.
Fri 7/111:47 pmMSO - ORD
1 stop8h 59mAmerican Airlines
Sun 7/138:34 pmORD - MSO
Nonstop3h 55mAmerican Airlines
Deal found 6/11$221
This Delta deal was found by Cheapflights users on 6/11. 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 7/31:08 pmMSO - ORD
1 stop8h 01mDelta
Tue 7/87:20 pmORD - MSO
1 stop6h 04mDelta
Deal found 6/11$237
This Alaska Airlines deal was found by Cheapflights users on 6/12. 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.
Wed 8/272:14 pmMSO - ORD
1 stop6h 50mAlaska Airlines
Mon 9/16:20 amORD - MSO
1 stop9h 58mAlaska Airlines
Deal found 6/12$249
This Hawaiian Airlines deal was found by Cheapflights users on 6/11. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/154:14 pmMSO - ORD
1 stop6h 45mHawaiian Airlines
Tue 9/238:00 amORD - MSO
1 stop8h 18mHawaiian Airlines
Deal found 6/11$254
This United Airlines deal was found by Cheapflights users on 6/11. 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 7/185:20 pmMSO - ORD
1 stop6h 10mUnited Airlines
Wed 7/238:50 amORD - MSO
Nonstop3h 48mUnited Airlines
Deal found 6/11$261
This Delta deal was found by Cheapflights users on 6/10. 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 7/35:54 amMSO - MDW
2 stops11h 47mDelta
Sat 7/127:21 pmMDW - MSO
1 stop5h 22mDelta
Deal found 6/10$299
This Alaska Airlines deal was found by Cheapflights users on 6/12. 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.
Mon 9/154:14 pmMSO - STL
1 stop6h 45mAlaska Airlines
Tue 9/233:35 pmSTL - MSO
1 stop9h 52mAlaska Airlines
Deal found 6/12$350
This Mytrip deal was found by Cheapflights users on 6/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/255:44 pmMSO - STL
2 stops22h 20mMultiple Airlines
Sun 6/296:12 amSTL - MSO
2 stops34h 24mMultiple Airlines
Deal found 6/10$395
This Mytrip deal was found by Cheapflights users on 6/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/1712:24 pmMSO - ORD
2 stops16h 39mMultiple Airlines
Sun 7/204:36 pmORD - MSO
2 stops23h 54mMultiple Airlines
Deal found 6/10$410
This United Airlines deal was found by Cheapflights users on 6/10. 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 6/252:23 pmMSO - STL
1 stop5h 25mUnited Airlines
Sun 6/295:00 amSTL - MSO
1 stop7h 38mUnited Airlines
Deal found 6/10$411
This Delta deal was found by Cheapflights users on 6/12. 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.
Mon 9/156:10 pmMSO - STL
2 stops13h 00mDelta
Tue 9/231:30 pmSTL - MSO
2 stops12h 01mDelta
Deal found 6/12$415
This Mytrip deal was found by Cheapflights users on 6/11. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/2612:24 pmMSO - MLI
1 stop6h 36mAllegiant Air
Sun 6/2912:36 pmMLI - MSO
1 stop28h 00mAllegiant Air
Deal found 6/11$449

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 June 12, 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

Fri 7/11

1:47 pm-11:46 pm

1 stop8h 59m

Chicago O'Hare Intl

Sun 7/13

8:34 pm-11:29 pm

Nonstop3h 55m

$221

MissoulaChicago

MSO - ORD

MSOORD

Missoula Johnson-Bell Field

Thu 7/3

1:08 pm-10:09 pm

1 stop8h 01m

Chicago O'Hare Intl

Tue 7/8

7:20 pm-12:24 am

1 stop6h 04m

$237

MissoulaChicago

MSO - ORD

MSOORD

Missoula Johnson-Bell Field

Wed 8/27

2:14 pm-10:04 pm

1 stop6h 50m

Chicago O'Hare Intl

Mon 9/1

6:20 am-3:18 pm

1 stop9h 58m

$249

MissoulaChicago

MSO - ORD

MSOORD

Missoula Johnson-Bell Field

Fri 7/18

5:20 pm-12:30 am

1 stop6h 10m

Chicago O'Hare Intl

Wed 7/23

8:50 am-11:38 am

Nonstop3h 48m

$261

MissoulaChicago

MSO - MDW

MSOMDW

Missoula Johnson-Bell Field

Thu 7/3

5:54 am-6:41 pm

2 stops11h 47m

Chicago Midway

Sat 7/12

7:21 pm-11:43 pm

1 stop5h 22m

$299

MissoulaChicago

MSO - ORD

MSOORD

Missoula Johnson-Bell Field

Fri 8/8

4:13 pm-11:59 pm

1 stop6h 46m

Chicago O'Hare Intl

Sun 8/10

7:00 am-1:36 pm

1 stop7h 36m

$329

MissoulaSt. Louis

MSO - STL

MSOSTL

Missoula Johnson-Bell Field

Mon 9/15

4:14 pm-11:59 pm

1 stop6h 45m

Lambert-St Louis

Tue 9/23

3:35 pm-12:27 am

1 stop9h 52m

$350

MissoulaSt. Louis

MSO - STL

MSOSTL

Missoula Johnson-Bell Field

Wed 6/25

5:44 pm-5:04 pm

2 stops22h 20m

Lambert-St Louis

Sun 6/29

6:12 am-3:36 pm

2 stops34h 24m

$395

MissoulaChicago

MSO - ORD

MSOORD

Missoula Johnson-Bell Field

Thu 7/17

12:24 pm-6:03 am

2 stops16h 39m

Chicago O'Hare Intl

Sun 7/20

4:36 pm-3:30 pm

2 stops23h 54m

$410

MissoulaSt. Louis

MSO - STL

MSOSTL

Missoula Johnson-Bell Field

Wed 6/25

2:23 pm-8:48 pm

1 stop5h 25m

Lambert-St Louis

Sun 6/29

5:00 am-11:38 am

1 stop7h 38m

$411

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 30 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 $245). Flying from Missoula to Illinois in March is currently the most expensive (average of $321). 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 June 12, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Missoula to Illinois as you normally would.

Weekly flight availability from Missoula to Illinois

Explore weekly flight availability from Missoula to Illinois. 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 June 12, 2025.

The most flights from MSO to USIL are scheduled on a Wednesday (7 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (5 on average).

Rainfall in Illinois by month

Plan your trip to Illinois by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

Plan your trip to Illinois by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

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 June 12, 2025.
To help decide which airline to fly from Missoula to Illinois, see what other customers have to say about Alaska Airlines, Delta and Hawaiian Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Entertainment

7.1

Comfort

7.8

Food

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Entertainment

7.1

Comfort

7.8

Food

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,946 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Entertainment

7.1

Comfort

7.8

Food

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,494 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Entertainment

7.1

Comfort

7.8

Food

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Entertainment

7.1

Comfort

7.8

Food

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Allegiant Air
7.3
Good
725 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Entertainment

7.1

Comfort

7.8

Food

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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.

  • What are the cheapest airlines to fly from Missoula to Illinois one-way?

    For one-way options, check prices for Delta. According to our data, you can fly for as low as $119. Users have also found prices from $131 and $135 on American Airlines and Hawaiian 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 - Chicago Midway or Missoula Johnson-Bell Field - Lambert-St Louis.

  • What are the cheapest flights from Missoula to Illinois?

    On average you can expect to pay $678 for a flight from Missoula to Illinois. The cheapest flight overall is $167 while the most popular route, (Missoula Johnson-Bell Field - Chicago O'Hare Intl) is currently priced at $237.

  • 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 $245). Flying from Missoula to Illinois in March is currently the most expensive (average of $321). 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

See prices for flight routes from nearby airports that may be better suited for you.
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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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$230Average$371FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$238Average$424FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$267Average$448FlexibilityNo cancel feeOn-time75%
DeltaCheapest$288Average$370FlexibilityNo cancel feeOn-timeN/A

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