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$105+ Cheap flights from Montana to Chicago (CHI)

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 6/3. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — CHI
Apr 5 — Apr 121
Sat 4/5
Sat 4/12
1 adult, Economy
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Cheap flight deals from Montana to Chicago

Keep the following information in mind while searching for Montana to Chicago flight deals. Data was last updated March 31, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$229
(American Airlines)

One-way from

$105
(Alaska Airlines)

Popular in

November

Cheapest in

January

Average price

$403

Good round-trip deal

$375 or less

Good one-way deal

$195 or less
Provider with most accurate pricing for Bozeman Gallatin Field-Chicago (CHI) flight deals.
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Provider most trusted by Cheapflights users for Bozeman Gallatin Field-Chicago (CHI) flights.
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From Montana to Chicago (CHI)
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One-way flight from Montana to Chicago (CHI)
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Highest demand for flights based on searches. 10% potential increase in price ($53 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Price to beat on a round-trip flight from Montana to Chicago (CHI).
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Price to beat on a one-way flight from Montana to Chicago (CHI).
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Find flight deals from Montana to Chicago

Cheapest flights from Montana to Chicago
Explore the most affordable flight options available from Montana to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 31, 2025.

This American Airlines deal was found by Cheapflights users on 3/30. 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 8/1412:35 pmBIL - ORD
Nonstop2h 58mAmerican Airlines
Sun 8/179:59 amORD - BIL
Nonstop3h 01mAmerican Airlines
Deal found 3/30$229
This United Airlines deal was found by Cheapflights users on 3/30. 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 9/115:20 pmMSO - ORD
1 stop5h 37mUnited Airlines
Sun 9/148:50 amORD - MSO
Nonstop3h 38mUnited Airlines
Deal found 3/30$239
This United Airlines deal was found by Cheapflights users on 3/29. 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 8/2912:00 pmBIL - ORD
Nonstop3h 00mUnited Airlines
Sun 8/317:15 amORD - BIL
1 stop6h 58mUnited Airlines
Deal found 3/29$239
This Delta deal was found by Cheapflights users on 3/30. 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 4/295:20 amBIL - ORD
1 stop6h 28mDelta
Tue 5/67:00 pmORD - BIL
1 stop6h 13mDelta
Deal found 3/30$249
This Delta deal was found by Cheapflights users on 3/30. 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 4/296:21 amBIL - MDW
1 stop7h 01mDelta
Tue 5/61:16 pmMDW - BIL
2 stops11h 57mDelta
Deal found 3/30$254
This Delta deal was found by Cheapflights users on 3/30. 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 6/121:08 pmMSO - ORD
1 stop8h 02mDelta
Tue 6/172:00 pmORD - MSO
2 stops10h 47mDelta
Deal found 3/30$260
This American Airlines deal was found by Cheapflights users on 3/31. 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 7/173:22 pmBZN - ORD
Nonstop3h 13mAmerican Airlines
Mon 7/2110:30 amORD - BZN
Nonstop3h 14mAmerican Airlines
Deal found 3/31$265
This American Airlines deal was found by Cheapflights users on 3/30. 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 7/35:38 amMSO - ORD
Nonstop3h 29mAmerican Airlines
Mon 7/78:38 pmORD - MSO
Nonstop3h 55mAmerican Airlines
Deal found 3/30$269
This Hawaiian Airlines deal was found by Cheapflights users on 3/29. 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.
Tue 4/229:30 amBZN - ORD
1 stop7h 31mHawaiian Airlines
Wed 4/236:00 amORD - BZN
1 stop8h 59mHawaiian Airlines
Deal found 3/29$269
This Delta deal was found by Cheapflights users on 3/30. 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 6/76:10 amBZN - ORD
1 stop4h 37mDelta
Sun 6/87:00 amORD - BZN
1 stop8h 43mDelta
Deal found 3/30$287
This Mytrip deal was found by Cheapflights users on 3/31. 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.
Fri 5/1610:05 pmMSO - ORD
2 stops34h 19mMultiple Airlines
Sun 5/189:02 pmORD - MSO
1 stop25h 18mMultiple Airlines
Deal found 3/31$289
This United Airlines deal was found by Cheapflights users on 3/30. 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 5/112:40 pmBZN - ORD
Nonstop3h 07mUnited Airlines
Sun 5/49:10 amORD - BZN
Nonstop3h 27mUnited Airlines
Deal found 3/30$289

Cheapflights Fare Finder

Customize your flight search to find flights from Montana to Chicago 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 March 31, 2025.
Use the filters below to find and compare flights from Montana to Chicago that are best for you.

Fly from

Montana

Fly to

Chicago

Route

Depart

Return

Price

BillingsChicago

BIL - ORD

BILORD

Billings Logan Intl

Thu 8/14

12:35 pm-4:33 pm

Nonstop2h 58m

Chicago O'Hare Intl

Sun 8/17

9:59 am-12:00 pm

Nonstop3h 01m

$229

MissoulaChicago

MSO - ORD

MSOORD

Missoula Johnson-Bell Field

Thu 9/11

5:20 pm-11:57 pm

1 stop5h 37m

Chicago O'Hare Intl

Sun 9/14

8:50 am-11:28 am

Nonstop3h 38m

$239

BillingsChicago

BIL - ORD

BILORD

Billings Logan Intl

Fri 8/29

12:00 pm-4:00 pm

Nonstop3h 00m

Chicago O'Hare Intl

Sun 8/31

7:15 am-1:13 pm

1 stop6h 58m

$239

BillingsChicago

BIL - ORD

BILORD

Billings Logan Intl

Tue 4/29

5:20 am-12:48 pm

1 stop6h 28m

Chicago O'Hare Intl

Tue 5/6

7:00 pm-12:13 am

1 stop6h 13m

$249

BillingsChicago

BIL - MDW

BILMDW

Billings Logan Intl

Tue 4/29

6:21 am-2:22 pm

1 stop7h 01m

Chicago Midway

Tue 5/6

1:16 pm-12:13 am

2 stops11h 57m

$254

MissoulaChicago

MSO - ORD

MSOORD

Missoula Johnson-Bell Field

Thu 6/12

1:08 pm-10:10 pm

1 stop8h 02m

Chicago O'Hare Intl

Tue 6/17

2:00 pm-11:47 pm

2 stops10h 47m

$260

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Thu 7/17

3:22 pm-7:35 pm

Nonstop3h 13m

Chicago O'Hare Intl

Mon 7/21

10:30 am-12:44 pm

Nonstop3h 14m

$265

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Tue 4/22

9:30 am-6:01 pm

1 stop7h 31m

Chicago O'Hare Intl

Wed 4/23

6:00 am-1:59 pm

1 stop8h 59m

$269

MissoulaChicago

MSO - ORD

MSOORD

Missoula Johnson-Bell Field

Thu 7/3

5:38 am-10:07 am

Nonstop3h 29m

Chicago O'Hare Intl

Mon 7/7

8:38 pm-11:33 pm

Nonstop3h 55m

$269

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Sat 6/7

6:10 am-11:47 am

1 stop4h 37m

Chicago O'Hare Intl

Sun 6/8

7:00 am-2:43 pm

1 stop8h 43m

$287

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/31

Showing 1-10 of 60 results
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Best time to book a flight from Montana to Chicago

Have a flexible travel schedule? Discover the best time to fly to Chicago 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.

Cheapflights Insights

Everything you need to know about your flight from Montana to Chicago

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

Currently, August is the cheapest month in which you can book a flight from Montana to Chicago (average of $245). Flying from Montana to Chicago in March is currently the most expensive (average of $323). 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 CHI?

Find hourly flight availability from Montana to Chicago. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 31, 2025.

When flying from Montana to Chicago, 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 Chicago by month

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

In terms of precipitation, rainfall in Chicago 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 Chicago when rainfall is around 1.7 in.

Temperature in Chicago by month

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

If weather is an important factor for your trip to Chicago, 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 Chicago

Get insights into the airlines that provide service to Chicago. 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 Chicago. Reviews last updated March 31, 2025.
To help decide which airline to fly from Montana to Chicago, see what other customers have to say about Alaska Airlines, Southwest and Delta. 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
9,818 reviews

Boarding

8.2

Overall

8.0

Comfort

7.9

Food

7.1

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
9,818 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Boarding

8.2

Overall

8.0

Comfort

7.9

Food

7.1

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Southwest
8.0
Very good
4,276 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Boarding

8.2

Overall

8.0

Comfort

7.9

Food

7.1

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,899 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Boarding

8.2

Overall

8.0

Comfort

7.9

Food

7.1

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Hawaiian Airlines
7.9
Good
2,342 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Boarding

8.2

Overall

8.0

Comfort

7.9

Food

7.1

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,614 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Boarding

8.2

Overall

8.0

Comfort

7.9

Food

7.1

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Related info for your journey

Find useful and relevant information for your journey from Montana to Chicago. 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 Chicago one-way?

    The cheapest airlines for a one-way flight from Montana to Chicago are Alaska Airlines ($105), American Airlines ($106), and Southwest ($116).

  • What are the most popular routes from Montana to Chicago?

    When deciding which route to take from Montana to Chicago consider Bozeman Gallatin Field - Chicago O'Hare Intl, Helena - Chicago O'Hare Intl or Missoula Johnson-Bell Field - Chicago O'Hare Intl as they are the most popular.

  • What are the most reliable airlines from Montana to Chicago?

    No one likes to see their flight delayed. When booking a flight from Montana to Chicago consider choosing SkyWest Airlines (86%), Qatar Airways (83%) or Lufthansa (82%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Montana to Chicago?

    On average you can expect to pay $1,121 for a flight from Montana to Chicago. The cheapest flight overall is $151 while the most popular route, (Bozeman Gallatin Field - Chicago O'Hare Intl) is currently priced at $242.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Montana to Chicago (average of $245). Flying from Montana to Chicago in March is currently the most expensive (average of $323). 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

Traveling to a place near Montana?

Book flights to Montana if you plan to visit one of these locations
Merrillville
New Buffalo
Hammond
Benton Harbor
Porter
Lansing
Valparaiso
Chesterton

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Alternative routes for Montana to Chicago

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Montana to Chicago

Discover the top 5 airlines that operate flights from Montana to Chicago. 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 March 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$205Average$453FlexibilityNo cancel feeOn-time75%
DeltaCheapest$216Average$413FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$229Average$454FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$238Average$543FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$388Average$418FlexibilityNo cancel feeOn-time63%
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