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Bozeman

$91+ Cheap flights from Illinois to Bozeman (BZN)

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 9/16. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BZN
Jul 6 — Jul 131
Sun 7/6
Sun 7/13
1 adult, Economy
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Cheap flight deals from Illinois to Bozeman

Keep the following information in mind while searching for Illinois to Bozeman flight deals. Data was last updated July 1, 2025.

Round-trip from

$214
(Alaska Airlines)

One-way from

$91
(Trip.com)

Popular in

December

Cheapest in

April

Average price

$390

Good round-trip deal

$255 or less

Good one-way deal

$144 or less
From Illinois to Bozeman Gallatin Field
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One-way flight from Illinois to Bozeman Gallatin Field
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Highest demand for flights based on searches. 9% potential increase in price ($42 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Price to beat on a round-trip flight from Illinois to Bozeman Gallatin Field.
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Price to beat on a one-way flight from Illinois to Bozeman Gallatin Field.
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Find flight deals from Illinois to Bozeman

Cheapest flights from Illinois to Bozeman
Explore the most affordable flight options available from Illinois to Bozeman. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 1, 2025.

This Alaska Airlines deal was found by Cheapflights users on 6/29. 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.
Mon 8/187:32 pmSTL - BZN
1 stop16h 04mAlaska Airlines
Mon 8/253:08 pmBZN - STL
1 stop7h 51mAlaska Airlines
Deal found 6/29$214
This Southwest deal was found by Cheapflights users on 6/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/84:40 pmSTL - BZN
1 stop6h 55mSouthwest
Thu 9/117:25 amBZN - STL
1 stop7h 35mSouthwest
Deal found 6/30$215
This United Airlines deal was found by Cheapflights users on 6/29. 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.
Tue 8/195:15 amSTL - BZN
2 stops10h 17mUnited Airlines
Tue 8/2610:37 amBZN - STL
1 stop4h 56mUnited Airlines
Deal found 6/29$220
This American Airlines deal was found by Cheapflights users on 6/30. 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 8/141:36 pmORD - BZN
Nonstop3h 14mAmerican Airlines
Thu 8/214:54 pmBZN - ORD
Nonstop3h 09mAmerican Airlines
Deal found 6/30$230
This Alaska Airlines deal was found by Cheapflights users on 7/1. 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 9/38:00 amORD - BZN
1 stop7h 14mAlaska Airlines
Mon 9/88:00 amBZN - ORD
1 stop7h 49mAlaska Airlines
Deal found 7/1$232
This Mytrip deal was found by Cheapflights users on 7/1. 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 8/286:00 amORD - BZN
1 stop14h 09mMultiple Airlines
Sun 8/314:58 pmBZN - ORD
1 stop10h 52mMultiple Airlines
Deal found 7/1$234
This Southwest deal was found by Cheapflights users on 6/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/256:55 pmORD - BZN
1 stop5h 40mSouthwest
Wed 9/312:55 pmBZN - ORD
2 stops9h 10mSouthwest
Deal found 6/30$235
This Southwest deal was found by Cheapflights users on 6/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/259:00 amMDW - BZN
1 stop5h 50mSouthwest
Wed 9/36:00 amBZN - MDW
2 stops8h 10mSouthwest
Deal found 6/30$235
This Hawaiian Airlines deal was found by Cheapflights users on 6/30. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/58:00 amORD - BZN
1 stop7h 14mHawaiian Airlines
Sat 9/135:22 amBZN - ORD
1 stop6h 49mHawaiian Airlines
Deal found 6/30$236
This United Airlines deal was found by Cheapflights users on 6/30. 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.
Mon 8/119:20 amORD - BZN
Nonstop3h 27mUnited Airlines
Thu 8/144:32 pmBZN - ORD
1 stop6h 58mUnited Airlines
Deal found 6/30$239
This Delta deal was found by Cheapflights users on 6/30. 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 9/63:50 pmORD - BZN
2 stops8h 23mDelta
Sat 9/135:30 amBZN - ORD
1 stop5h 23mDelta
Deal found 6/30$242
This Delta deal was found by Cheapflights users on 7/1. 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.
Fri 9/57:17 pmMDW - BZN
1 stop4h 44mDelta
Tue 9/97:35 amBZN - MDW
2 stops9h 02mDelta
Deal found 7/1$242

Cheapflights Fare Finder

Customize your flight search to find flights from Illinois to Bozeman 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 July 1, 2025.
Use the filters below to find and compare flights from Illinois to Bozeman that are best for you.

Fly from

Illinois

Fly to

Bozeman

Route

Depart

Return

Price

St. LouisBozeman

STL - BZN

STLBZN

Lambert-St Louis

Mon 8/18

7:32 pm-10:36 am

1 stop16h 04m

Bozeman Gallatin Field

Mon 8/25

3:08 pm-11:59 pm

1 stop7h 51m

$214

St. LouisBozeman

STL - BZN

STLBZN

Lambert-St Louis

Mon 9/8

4:40 pm-10:35 pm

1 stop6h 55m

Bozeman Gallatin Field

Thu 9/11

7:25 am-4:00 pm

1 stop7h 35m

$215

St. LouisBozeman

STL - BZN

STLBZN

Lambert-St Louis

Tue 8/19

5:15 am-2:32 pm

2 stops10h 17m

Bozeman Gallatin Field

Tue 8/26

10:37 am-4:33 pm

1 stop4h 56m

$220

ChicagoBozeman

ORD - BZN

ORDBZN

Chicago O'Hare Intl

Thu 8/14

1:36 pm-3:50 pm

Nonstop3h 14m

Bozeman Gallatin Field

Thu 8/21

4:54 pm-9:03 pm

Nonstop3h 09m

$230

ChicagoBozeman

ORD - BZN

ORDBZN

Chicago O'Hare Intl

Wed 9/3

8:00 am-2:14 pm

1 stop7h 14m

Bozeman Gallatin Field

Mon 9/8

8:00 am-4:49 pm

1 stop7h 49m

$232

ChicagoBozeman

ORD - BZN

ORDBZN

Chicago O'Hare Intl

Thu 8/28

6:00 am-7:09 pm

1 stop14h 09m

Bozeman Gallatin Field

Sun 8/31

4:58 pm-4:50 am

1 stop10h 52m

$234

ChicagoBozeman

ORD - BZN

ORDBZN

Chicago O'Hare Intl

Mon 8/25

6:55 pm-11:35 pm

1 stop5h 40m

Bozeman Gallatin Field

Wed 9/3

12:55 pm-11:05 pm

2 stops9h 10m

$235

ChicagoBozeman

MDW - BZN

MDWBZN

Chicago Midway

Mon 8/25

9:00 am-1:50 pm

1 stop5h 50m

Bozeman Gallatin Field

Wed 9/3

6:00 am-3:10 pm

2 stops8h 10m

$235

ChicagoBozeman

ORD - BZN

ORDBZN

Chicago O'Hare Intl

Fri 9/5

8:00 am-2:14 pm

1 stop7h 14m

Bozeman Gallatin Field

Sat 9/13

5:22 am-1:11 pm

1 stop6h 49m

$236

ChicagoBozeman

ORD - BZN

ORDBZN

Chicago O'Hare Intl

Mon 8/11

9:20 am-11:47 am

Nonstop3h 27m

Bozeman Gallatin Field

Thu 8/14

4:32 pm-12:30 am

1 stop6h 58m

$239

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/30

Showing 1-10 of 43 results
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Best time to book a flight from Illinois to Bozeman

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

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

Currently, October is the cheapest month in which you can book a flight from Illinois to Bozeman (average of $371). Flying from Illinois to Bozeman in May is currently the most expensive (average of $478). 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 IL to BZN?

Find hourly flight availability from Illinois to Bozeman. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 1, 2025.

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

Reviews of airlines servicing Bozeman

Get insights into the airlines that provide service to Bozeman. 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 Bozeman. Reviews last updated July 1, 2025.
Read through reviews of airlines operating flights from Illinois to Bozeman, such as 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
10,000 reviews

Entertainment

7.1

Food

7.1

Overall

8.0

Crew

8.5

Comfort

7.8

Boarding

8.1

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

Entertainment

7.1

Food

7.1

Overall

8.0

Crew

8.5

Comfort

7.8

Boarding

8.1

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
4,273 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Overall

8.0

Crew

8.5

Comfort

7.8

Boarding

8.1

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
7,973 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Overall

8.0

Crew

8.5

Comfort

7.8

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.8
Good
2,539 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Overall

8.0

Crew

8.5

Comfort

7.8

Boarding

8.1

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
8,858 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Overall

8.0

Crew

8.5

Comfort

7.8

Boarding

8.1

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 Illinois to Bozeman. 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 into for flights to Bozeman from Illinois?

    Bozeman Gallatin Field (BZN), located 8.7 mi from the city center, is the airport you fly into when you book flights from Illinois to Bozeman.

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

    To fly one-way, consider booking your trip with Hawaiian Airlines, which is currently one of the cheapest options available, starting at $91. American Airlines flights start at $96 while deals on Southwest start at $96 one-way.

  • What are the most popular routes from Illinois to Bozeman?

    When deciding which route to take from Illinois to Bozeman consider Chicago O'Hare Intl - Bozeman Gallatin Field, Chicago Midway - Bozeman Gallatin Field or Lambert-St Louis - Bozeman Gallatin Field as they are the most popular.

  • What are the most reliable airlines from Illinois to Bozeman?

    The top 3 most reliable airlines when flying from Illinois to Bozeman are SkyWest Airlines (95%), United Airlines (90%) and Alaska Airlines (85%).

  • What are the cheapest flights from Illinois to Bozeman?

    The cheapest flight price from Illinois to Bozeman is $114. On average you can expect to pay $278. The most popular route, (Chicago O'Hare Intl - Bozeman Gallatin Field), can usually be booked for $175.

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

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

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

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

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

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

    Currently, October is the cheapest month in which you can book a flight from Illinois to Bozeman (average of $371). Flying from Illinois to Bozeman in May is currently the most expensive (average of $478). 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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Top 5 airlines flying from Illinois to Bozeman

Discover the top 5 airlines that operate flights from Illinois to Bozeman. 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 July 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$225Average$442FlexibilityNo cancel feeOn-time71%
DeltaCheapest$236Average$336FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$289Average$563FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$291Average$504FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$296Average$481FlexibilityNo cancel feeOn-time63%

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