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$37+ 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 6/15. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — CHI
may. 6 — may. 131
mar. 5/6
mar. 5/13
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 mayo 1, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$209
(American Airlines)

One-way from

$105
(Alaska Airlines)

Popular in

November

Cheapest in

January

Average price

$422

Good round-trip deal

$376 or less

Good one-way deal

$180 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. 11% potential increase in price ($57 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in May 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 mayo 1, 2025.

This American Airlines deal was found by Cheapflights users on 4/30. 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.
vie. 9/123:22 pmBZN - ORD
Nonstop3h 13mAmerican Airlines
lun. 9/1512:17 pmORD - BZN
Nonstop3h 15mAmerican Airlines
Deal found 4/30$197
This American Airlines deal was found by Cheapflights users on 4/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 8/166:00 amBIL - ORD
Nonstop2h 51mAmerican Airlines
mié. 8/208:46 pmORD - BIL
Nonstop3h 13mAmerican Airlines
Deal found 4/29$209
This American Airlines deal was found by Cheapflights users on 4/30. 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.
jue. 9/254:53 pmFCA - ORD
Nonstop3h 24mAmerican Airlines
lun. 9/299:56 amORD - FCA
Nonstop3h 39mAmerican Airlines
Deal found 4/30$211
This United Airlines deal was found by Cheapflights users on 4/29. 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.
jue. 6/54:21 pmBZN - ORD
1 stop5h 20mUnited Airlines
lun. 6/98:05 pmORD - BZN
Nonstop3h 24mUnited Airlines
Deal found 4/29$221
This United Airlines deal was found by Cheapflights users on 4/30. 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.
vie. 6/132:23 pmMSO - ORD
1 stop7h 18mUnited Airlines
dom. 6/159:02 amORD - MSO
Nonstop3h 48mUnited Airlines
Deal found 4/30$230
This Delta deal was found by Cheapflights users on 4/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 8/166:25 amBIL - ORD
1 stop7h 34mDelta
mié. 8/201:35 pmORD - BIL
2 stops9h 51mDelta
Deal found 4/29$234
This American Airlines deal was found by Cheapflights users on 4/30. 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.
mié. 7/165:05 amMSO - ORD
Nonstop3h 24mAmerican Airlines
dom. 7/208:34 pmORD - MSO
Nonstop3h 55mAmerican Airlines
Deal found 4/30$235
This Delta deal was found by Cheapflights users on 4/30. 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.
jue. 6/56:10 amBZN - MDW
1 stop6h 05mDelta
lun. 6/97:21 pmMDW - BZN
1 stop5h 35mDelta
Deal found 4/30$237
This Delta deal was found by Cheapflights users on 4/30. 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.
lun. 8/115:45 amBZN - ORD
1 stop5h 36mDelta
sáb. 8/169:30 amORD - BZN
1 stop5h 45mDelta
Deal found 4/30$237
This Alaska Airlines deal was found by Cheapflights users on 4/29. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 6/67:33 pmBZN - ORD
1 stop9h 07mAlaska Airlines
dom. 6/86:00 amORD - BZN
1 stop10h 05mAlaska Airlines
Deal found 4/29$240
This Delta deal was found by Cheapflights users on 4/30. 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.
lun. 6/25:25 amFCA - ORD
1 stop6h 18mDelta
mié. 6/47:30 amORD - FCA
1 stop6h 23mDelta
Deal found 4/30$245
This Delta deal was found by Cheapflights users on 4/30. 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.
mar. 6/175:54 amMSO - MDW
1 stop6h 12mDelta
sáb. 6/217:21 pmMDW - MSO
1 stop5h 25mDelta
Deal found 4/30$254

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 mayo 1, 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

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

vie. 9/12

3:22 pm-7:35 pm

Nonstop3h 13m

Chicago O'Hare Intl

lun. 9/15

12:17 pm-2:32 pm

Nonstop3h 15m

$197

BillingsChicago

BIL - ORD

BILORD

Billings Logan Intl

sáb. 8/16

6:00 am-9:51 am

Nonstop2h 51m

Chicago O'Hare Intl

mié. 8/20

8:46 pm-10:59 pm

Nonstop3h 13m

$209

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

jue. 6/5

4:21 pm-10:41 pm

1 stop5h 20m

Chicago O'Hare Intl

lun. 6/9

8:05 pm-10:29 pm

Nonstop3h 24m

$221

MissoulaChicago

MSO - ORD

MSOORD

Missoula Johnson-Bell Field

vie. 6/13

2:23 pm-10:41 pm

1 stop7h 18m

Chicago O'Hare Intl

dom. 6/15

9:02 am-11:50 am

Nonstop3h 48m

$230

BillingsChicago

BIL - ORD

BILORD

Billings Logan Intl

sáb. 8/16

6:25 am-2:59 pm

1 stop7h 34m

Chicago O'Hare Intl

mié. 8/20

1:35 pm-10:26 pm

2 stops9h 51m

$234

MissoulaChicago

MSO - ORD

MSOORD

Missoula Johnson-Bell Field

mié. 7/16

5:05 am-9:29 am

Nonstop3h 24m

Chicago O'Hare Intl

dom. 7/20

8:34 pm-11:29 pm

Nonstop3h 55m

$235

BozemanChicago

BZN - MDW

BZNMDW

Bozeman Gallatin Field

jue. 6/5

6:10 am-1:15 pm

1 stop6h 05m

Chicago Midway

lun. 6/9

7:21 pm-11:56 pm

1 stop5h 35m

$237

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

lun. 8/11

5:45 am-12:21 pm

1 stop5h 36m

Chicago O'Hare Intl

sáb. 8/16

9:30 am-2:15 pm

1 stop5h 45m

$237

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

vie. 6/6

7:33 pm-5:40 am

1 stop9h 07m

Chicago O'Hare Intl

dom. 6/8

6:00 am-3:05 pm

1 stop10h 05m

$240

KalispellChicago

FCA - ORD

FCAORD

Kalispell Glacier Park

lun. 6/2

11:53 am-9:40 pm

1 stop8h 47m

Chicago O'Hare Intl

mar. 6/3

7:30 am-12:53 pm

1 stop6h 23m

$245

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

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 $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 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 mayo 1, 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 mayo 1, 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
9,972 reviews

Comfort

7.9

Food

7.1

Crew

8.5

Entertainment

7.1

Boarding

8.1

Overall

8.0

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
9,972 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Comfort

7.9

Food

7.1

Crew

8.5

Entertainment

7.1

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,294 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Comfort

7.9

Food

7.1

Crew

8.5

Entertainment

7.1

Boarding

8.1

Overall

8.0

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
7,934 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Comfort

7.9

Food

7.1

Crew

8.5

Entertainment

7.1

Boarding

8.1

Overall

8.0

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
2,408 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Comfort

7.9

Food

7.1

Crew

8.5

Entertainment

7.1

Boarding

8.1

Overall

8.0

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
8,696 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Comfort

7.9

Food

7.1

Crew

8.5

Entertainment

7.1

Boarding

8.1

Overall

8.0

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 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), Southwest ($106), and American Airlines ($106).

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

    When deciding which route to take from Montana to Chicago consider Missoula Johnson-Bell Field - Chicago O'Hare Intl, Bozeman Gallatin Field - Chicago O'Hare Intl or Kalispell Glacier Park - 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 Lufthansa (80%), Emirates (77%) or SkyWest Airlines (71%) 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 $698 for a flight from Montana to Chicago. The cheapest flight overall is $116 while the most popular route, (Missoula Johnson-Bell Field - Chicago O'Hare Intl) is currently priced at $230.

  • 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 $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

Traveling to a place near Montana?

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

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Alternative routes for Montana to Chicago

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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 mayo 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$205Average$458FlexibilityNo cancel feeOn-time75%
DeltaCheapest$216Average$424FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$229Average$435FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$238Average$528FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$388Average$418FlexibilityNo cancel feeOn-time63%

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