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$110+ Cheap flights from Montana 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 1/30. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — ORD
Nov 25 — Dec 21
Mon 11/25
Mon 12/2
1 adult, Economy
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Cheap flight deals from Montana to Illinois

Discover tips and strategies to find the most affordable flight options for your journey from Montana (USMT) to Illinois (USIL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated November 20, 2024.

Find flight deals from Montana to Illinois

Cheapest flights from Montana to Illinois
Explore the most affordable flight options available from Montana to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 20, 2024.

This Delta deal was found by Cheapflights users on 11/19. 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 12/212:00 pmBZN - ORD
1 stop7h 52mDelta
Wed 1/15:50 pmORD - BZN
1 stop6h 46mDelta
Deal found 11/19$332
This Delta deal was found by Cheapflights users on 11/20. 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 12/146:20 amBIL - ORD
1 stop7h 23mDelta
Mon 12/165:25 pmORD - BIL
1 stop6h 57mDelta
Deal found 11/20$335
This United deal was found by Cheapflights users on 11/19. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/185:06 pmMSO - ORD
1 stop6h 16mUnited Airlines
Sun 1/127:10 amORD - MSO
1 stop7h 19mUnited Airlines
Deal found 11/19$348
This Mytrip deal was found by Cheapflights users on 11/19. 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.
Mon 12/91:53 pmBIL - ORD
2 stops14h 37mMultiple Airlines
Tue 12/109:10 pmORD - BIL
1 stop15h 34mMultiple Airlines
Deal found 11/19$356
This American Airlines deal was found by Cheapflights users on 11/19. 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.
Sun 12/222:00 pmBZN - ORD
Nonstop3h 06mAmerican Airlines
Sun 1/129:45 amORD - BZN
Nonstop3h 27mAmerican Airlines
Deal found 11/19$379
This Delta deal was found by Cheapflights users on 11/20. 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 12/2212:30 pmBZN - MDW
1 stop8h 36mDelta
Sun 1/121:26 pmMDW - BZN
2 stops10h 30mDelta
Deal found 11/20$394
This Southwest deal was found by Cheapflights users on 11/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/275:15 amBZN - ORD
1 stop8h 10mSouthwest
Sun 1/52:55 pmORD - BZN
2 stops8h 30mSouthwest
Deal found 11/19$403
This Alaska Airlines deal was found by Cheapflights users on 11/20. 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.
Sun 12/86:59 pmMSO - ORD
1 stop9h 57mAlaska Airlines
Sun 12/156:32 amORD - MSO
1 stop8h 14mAlaska Airlines
Deal found 11/20$413
This American Airlines deal was found by Cheapflights users on 11/20. 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.
Wed 12/41:33 pmMSO - ORD
1 stop9h 16mAmerican Airlines
Mon 12/96:00 amORD - MSO
1 stop8h 21mAmerican Airlines
Deal found 11/20$418
This Mytrip deal was found by Cheapflights users on 11/20. 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.
Tue 11/2610:12 pmFCA - ORD
1 stop12h 40mMultiple Airlines
Wed 12/46:33 pmORD - FCA
2 stops27h 34mMultiple Airlines
Deal found 11/20$420
This Alaska Airlines deal was found by Cheapflights users on 11/19. 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 12/162:46 pmBIL - ORD
1 stop21h 16mAlaska Airlines
Tue 1/143:03 pmORD - BIL
1 stop8h 41mAlaska Airlines
Deal found 11/19$424
This Mytrip deal was found by Cheapflights users on 11/20. 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.
Mon 12/210:09 pmMSO - ORD
2 stops24h 29mMultiple Airlines
Sat 12/79:10 pmORD - MSO
1 stop13h 28mMultiple Airlines
Deal found 11/20$427

Find flights from Montana to Illinois within your budget

Customize your flight search to find flights from Montana 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 2,629,791 searches. Data last updated November 20, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

MissoulaChicago

MSO - ORD

MSOORD

Missoula Johnson-Bell Field

Mon 1/13

2:38 pm-11:59 pm

1 stop8h 21m

Chicago O'Hare Intl

Thu 1/16

7:45 am-1:42 pm

1 stop6h 57m

$268

MissoulaChicago

MSO - ORD

MSOORD

Missoula Johnson-Bell Field

Fri 1/31

5:40 am-12:45 pm

1 stop6h 05m

Chicago O'Hare Intl

Mon 2/3

7:20 pm-12:41 am

1 stop6h 21m

$278

MissoulaChicago

MSO - MDW

MSOMDW

Missoula Johnson-Bell Field

Fri 1/31

8:00 am-6:14 pm

2 stops9h 14m

Chicago Midway

Mon 2/3

1:26 pm-8:27 pm

1 stop8h 01m

$283

MissoulaChicago

MSO - ORD

MSOORD

Missoula Johnson-Bell Field

Fri 4/4

5:32 pm-11:57 pm

1 stop5h 25m

Chicago O'Hare Intl

Sun 4/6

5:00 am-10:02 am

1 stop6h 02m

$288

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Sat 12/21

2:00 pm-10:52 pm

1 stop7h 52m

Chicago O'Hare Intl

Wed 1/1

5:50 pm-11:36 pm

1 stop6h 46m

$332

BillingsChicago

BIL - ORD

BILORD

Billings Logan Intl

Sat 12/14

6:20 am-2:43 pm

1 stop7h 23m

Chicago O'Hare Intl

Mon 12/16

5:25 pm-11:22 pm

1 stop6h 57m

$335

MissoulaChicago

MSO - ORD

MSOORD

Missoula Johnson-Bell Field

Mon 1/13

5:36 pm-9:00 pm

2 stops26h 24m

Chicago O'Hare Intl

Thu 1/16

9:18 pm-8:52 pm

2 stops24h 34m

$337

KalispellChicago

FCA - ORD

FCAORD

Kalispell Glacier Park

Fri 1/17

5:25 am-1:47 pm

1 stop7h 22m

Chicago O'Hare Intl

Sun 1/19

5:00 pm-11:11 pm

1 stop7h 11m

$354

BillingsChicago

BIL - ORD

BILORD

Billings Logan Intl

Mon 12/9

1:53 pm-5:30 am

2 stops14h 37m

Chicago O'Hare Intl

Tue 12/10

9:10 pm-11:44 am

1 stop15h 34m

$356

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Sun 12/22

2:00 pm-6:06 pm

Nonstop3h 06m

Chicago O'Hare Intl

Sun 1/12

9:45 am-12:12 pm

Nonstop3h 27m

$379

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/19

Showing 1-10 of 54 results
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Best time to book a flight from Montana to Illinois

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

Travel insights for flights from Montana to Illinois

Get recent, data-driven insights about flights from Montana to Illinois including ideal travel times, pricing trends, and more.

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

Currently, September is the cheapest month in which you can book a flight from Montana to Illinois (average of $232). Flying from Montana to Illinois in June is currently the most expensive (average of $308). 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 MT to IL?

Find hourly flight availability from Montana 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 November 20, 2024.

When flying from Montana to Illinois, 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 Montana to Illinois

Explore weekly flight availability from Montana 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 November 20, 2024.

The most flights from USMT to USIL are scheduled on a Monday (3 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (3 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 November 20, 2024.
Peruse reviews from past customers who have flown with United Airlines, Alaska Airlines and American Airlines from Montana to Illinois to help guide your decision. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
5,014 reviews

Overall

8.1

Entertainment

7.7

Comfort

8.1

Food

7.2

Boarding

8.2

Crew

8.7

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Southwest
8.1
Very good
5,014 reviews
Southwest
8.1
Very good
5,014 reviews

Overall

8.1

Entertainment

7.7

Comfort

8.1

Food

7.2

Boarding

8.2

Crew

8.7

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Alaska Airlines
8.0
Very good
9,461 reviews
Southwest
8.1
Very good
5,014 reviews

Overall

8.1

Entertainment

7.7

Comfort

8.1

Food

7.2

Boarding

8.2

Crew

8.7

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Delta
8.0
Very good
8,756 reviews
Southwest
8.1
Very good
5,014 reviews

Overall

8.1

Entertainment

7.7

Comfort

8.1

Food

7.2

Boarding

8.2

Crew

8.7

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

United Airlines
7.4
Good
9,171 reviews
Southwest
8.1
Very good
5,014 reviews

Overall

8.1

Entertainment

7.7

Comfort

8.1

Food

7.2

Boarding

8.2

Crew

8.7

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
5,014 reviews

Overall

8.1

Entertainment

7.7

Comfort

8.1

Food

7.2

Boarding

8.2

Crew

8.7

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Related info for your journey

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

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

    The cheapest airline one-way is Delta, with whom users have recently found tickets for as low as $118. However, be on the lookout for offers from American Airlines and Alaska Airlines, as they are both options that can get you from Montana to Illinois for a low price.

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

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

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

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

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

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

    Currently, September is the cheapest month in which you can book a flight from Montana to Illinois (average of $232). Flying from Montana to Illinois in June is currently the most expensive (average of $308). 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.

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Alternative routes for Montana 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 Montana to Illinois

Discover the top 4 airlines that operate flights from Montana 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 2,629,791 searches. Data last updated November 20, 2024.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$217Average$426FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$229Average$473FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$238Average$544FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$257Average$423FlexibilityNo cancel feeOn-time75%
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