Illinois

$109+ 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 1/18. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — ORD
Dec 24 — Dec 311
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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 December 19, 2024.

Round-trip from

$223
(American Airlines)

One-way from

$109
(American Airlines)
From Montana to Illinois
One-way flight from Montana to Illinois

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 December 19, 2024.

This American Airlines deal was found by Cheapflights users on 12/18. 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.
Tue 12/312:00 pmBZN - ORD
Nonstop3h 06mAmerican Airlines
Thu 1/239:45 amORD - BZN
Nonstop3h 27mAmerican Airlines
Deal found 12/18$288
This Delta deal was found by Cheapflights users on 12/18. 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 12/2512:10 pmBZN - ORD
1 stop8h 29mDelta
Thu 1/27:05 pmORD - BZN
1 stop6h 33mDelta
Deal found 12/18$327
This United Airlines deal was found by Cheapflights users on 12/18. 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 12/2512:47 pmBZN - ORD
Nonstop3h 04mUnited Airlines
Thu 1/212:46 pmORD - BZN
Nonstop3h 37mUnited Airlines
Deal found 12/18$328
This Delta deal was found by Cheapflights users on 12/18. 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 12/225:30 amBZN - MDW
2 stops9h 54mDelta
Sun 1/126:59 pmMDW - BZN
1 stop5h 39mDelta
Deal found 12/18$363
This Alaska Airlines deal was found by Cheapflights users on 12/18. 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 12/315:55 pmBZN - ORD
1 stop9h 45mAlaska Airlines
Thu 1/237:45 amORD - BZN
1 stop7h 12mAlaska Airlines
Deal found 12/18$393
This Delta deal was found by Cheapflights users on 12/19. 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.
Tue 12/248:05 amMSO - ORD
1 stop8h 04mDelta
Mon 1/64:15 pmORD - MSO
1 stop5h 12mDelta
Deal found 12/19$423
This Southwest deal was found by Cheapflights users on 12/18. 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.
Thu 12/1911:30 amBZN - ORD
2 stops9h 30mSouthwest
Sat 12/217:30 amORD - BZN
2 stops11h 40mSouthwest
Deal found 12/18$518
This United deal was found by Cheapflights users on 12/18. 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 12/2512:46 pmFCA - ORD
Nonstop3h 33mUnited Airlines
Wed 1/19:15 pmORD - FCA
2 stops25h 53mUnited Airlines
Deal found 12/18$535
This Southwest deal was found by Cheapflights users on 12/18. 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.
Thu 12/192:55 pmBZN - MDW
1 stop7h 35mSouthwest
Sat 12/2110:45 pmMDW - BZN
1 stop12h 05mSouthwest
Deal found 12/18$538
This Delta deal was found by Cheapflights users on 12/18. 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 12/195:30 amBZN - STL
1 stop8h 19mDelta
Thu 1/95:00 pmSTL - BZN
1 stop6h 56mDelta
Deal found 12/18$599
This United deal was found by Cheapflights users on 12/18. 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.
Thu 12/193:35 pmBZN - STL
1 stop7h 53mUnited Airlines
Thu 1/91:02 pmSTL - BZN
2 stops21h 36mUnited Airlines
Deal found 12/18$659
This Alaska Airlines deal was found by Cheapflights users on 12/18. 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 12/256:00 amMSO - ORD
1 stop9h 50mAlaska Airlines
Mon 12/307:00 amORD - MSO
2 stops17h 59mAlaska Airlines
Deal found 12/18$700

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 2,558,603 searches. Data last updated December 19, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Sat 1/18

1:02 pm-5:05 pm

Nonstop3h 03m

Chicago O'Hare Intl

Sun 1/19

9:45 am-12:12 pm

Nonstop3h 27m

$223

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Sat 1/18

2:44 pm-11:59 pm

1 stop8h 15m

Chicago O'Hare Intl

Sun 1/19

9:15 am-11:49 am

Nonstop3h 34m

$233

BozemanChicago

BZN - MDW

BZNMDW

Bozeman Gallatin Field

Sat 1/18

11:55 am-10:20 pm

1 stop9h 25m

Chicago Midway

Mon 1/20

6:00 am-2:11 pm

1 stop9h 11m

$242

MissoulaChicago

MSO - ORD

MSOORD

Missoula Johnson-Bell Field

Thu 1/9

7:30 am-3:30 pm

1 stop7h 00m

Chicago O'Hare Intl

Sat 1/18

4:15 pm-10:08 pm

1 stop6h 53m

$242

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Sat 1/18

5:40 am-5:29 pm

2 stops10h 49m

Chicago O'Hare Intl

Mon 1/20

6:15 am-12:53 pm

1 stop7h 38m

$247

MissoulaChicago

MSO - ORD

MSOORD

Missoula Johnson-Bell Field

Thu 1/9

5:03 pm-11:59 pm

1 stop5h 56m

Chicago O'Hare Intl

Mon 1/13

2:39 pm-9:42 pm

1 stop8h 03m

$268

KalispellChicago

FCA - ORD

FCAORD

Kalispell Glacier Park

Fri 1/17

3:00 pm-9:58 pm

1 stop5h 58m

Chicago O'Hare Intl

Sun 1/19

6:15 am-1:53 pm

1 stop8h 38m

$268

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Fri 1/10

11:26 am-11:59 pm

1 stop11h 33m

Chicago O'Hare Intl

Mon 1/13

5:28 pm-11:56 pm

1 stop7h 28m

$273

MissoulaChicago

MSO - MDW

MSOMDW

Missoula Johnson-Bell Field

Thu 1/9

7:30 am-6:14 pm

2 stops9h 44m

Chicago Midway

Mon 1/13

1:26 pm-8:27 pm

1 stop8h 01m

$283

MissoulaChicago

MSO - ORD

MSOORD

Missoula Johnson-Bell Field

Mon 1/6

2:38 pm-11:59 pm

1 stop8h 21m

Chicago O'Hare Intl

Wed 1/8

6:55 pm-3:32 pm

1 stop21h 37m

$288

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

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 December 19, 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.

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 December 19, 2024.
Peruse reviews from past customers who have flown with American Airlines, United Airlines and Alaska 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.
8.1
Very good
4,836 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Boarding

8.2

Crew

8.7

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

8.1
Very good
4,836 reviews
8.1
Very good
4,836 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Boarding

8.2

Crew

8.7

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

8.0
Very good
9,552 reviews
8.1
Very good
4,836 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Boarding

8.2

Crew

8.7

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

8.0
Very good
8,600 reviews
8.1
Very good
4,836 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Boarding

8.2

Crew

8.7

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

7.4
Good
9,048 reviews
8.1
Very good
4,836 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Boarding

8.2

Crew

8.7

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

7.2
Good
10,000 reviews
8.1
Very good
4,836 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Boarding

8.2

Crew

8.7

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

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 American Airlines, with whom users have recently found tickets for as low as $109. However, be on the lookout for offers from Alaska Airlines and Delta, 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.

See more FAQs

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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.

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 2,558,603 searches. Data last updated December 19, 2024.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$216Average$437FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$229Average$497FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$238Average$533FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$257Average$423FlexibilityNo cancel feeOn-time75%
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