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$122+ 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 3/12. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BZN
Feb 27 — Mar 61
Thu 2/27
Thu 3/6
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 February 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$302
(Alaska Airlines)

One-way from

$122
(Mytrip)

Popular in

December

Cheapest in

April

Average price

$435

Good round-trip deal

$384 or less

Good one-way deal

$264 or less
Provider with most accurate pricing for Chicago (CHI)-Bozeman Gallatin Field flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Bozeman Gallatin Field flights.
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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. 4% potential increase in price ($23 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in February 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 February 22, 2025.

This American Airlines deal was found by Cheapflights users on 2/21. 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.
Sat 8/237:29 amSTL - BZN
1 stop7h 55mAmerican Airlines
Sat 8/307:42 amBZN - STL
1 stop5h 22mAmerican Airlines
Deal found 2/21$287
This Alaska Airlines deal was found by Cheapflights users on 2/21. 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 3/127:00 amSTL - BZN
1 stop8h 09mAlaska Airlines
Wed 4/211:24 amBZN - STL
1 stop11h 35mAlaska Airlines
Deal found 2/21$302
This United Airlines deal was found by Cheapflights users on 2/21. 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 3/79:15 amORD - BZN
Nonstop3h 32mUnited Airlines
Mon 3/108:23 amBZN - ORD
Nonstop3h 07mUnited Airlines
Deal found 2/21$304
This Alaska Airlines deal was found by Cheapflights users on 2/21. 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.
Sat 9/62:00 pmORD - BZN
1 stop9h 35mAlaska Airlines
Sat 9/138:00 amBZN - ORD
1 stop8h 50mAlaska Airlines
Deal found 2/21$308
This United Airlines deal was found by Cheapflights users on 2/21. 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 3/1211:05 amSTL - BZN
2 stops11h 05mUnited Airlines
Wed 4/22:10 pmBZN - STL
1 stop6h 40mUnited Airlines
Deal found 2/21$308
This Delta deal was found by Cheapflights users on 2/22. 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 8/199:30 amORD - BZN
1 stop5h 45mDelta
Sat 8/3011:37 amBZN - ORD
1 stop5h 28mDelta
Deal found 2/22$309
This Delta deal was found by Cheapflights users on 2/22. 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 3/142:55 pmMDW - BZN
2 stops9h 37mDelta
Thu 3/206:00 amBZN - MDW
1 stop7h 15mDelta
Deal found 2/22$309
This Mytrip deal was found by Cheapflights users on 2/21. 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.
Wed 4/210:01 amORD - BZN
2 stops24h 30mMultiple Airlines
Tue 4/82:53 pmBZN - ORD
3 stops41h 31mMultiple Airlines
Deal found 2/21$313
This American Airlines deal was found by Cheapflights users on 2/21. 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.
Fri 3/75:00 amORD - BZN
1 stop8h 08mAmerican Airlines
Mon 3/103:50 pmBZN - ORD
1 stop7h 28mAmerican Airlines
Deal found 2/21$324
This Hawaiian Airlines deal was found by Cheapflights users on 2/21. 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.
Mon 9/152:55 pmSTL - BZN
1 stop8h 40mHawaiian Airlines
Tue 9/308:00 amBZN - STL
1 stop9h 37mHawaiian Airlines
Deal found 2/21$326
This Southwest deal was found by Cheapflights users on 2/21. 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 3/147:00 amMDW - BZN
1 stop9h 05mSouthwest
Thu 3/205:15 amBZN - MDW
1 stop5h 20mSouthwest
Deal found 2/21$334
This United Airlines deal was found by Cheapflights users on 2/21. 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 3/78:40 amMLI - BZN
1 stop7h 51mUnited Airlines
Sun 3/97:20 amBZN - MLI
2 stops12h 41mUnited Airlines
Deal found 2/21$345

Find flights from Illinois to Bozeman within your budget

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 February 22, 2025.

Fly from

Illinois

Fly to

Bozeman

Route

Depart

Return

Price

St. LouisBozeman

STL - BZN

STLBZN

Lambert-St Louis

Wed 3/12

7:00 am-2:09 pm

1 stop8h 09m

Bozeman Gallatin Field

Wed 4/2

11:24 am-11:59 pm

1 stop11h 35m

$302

ChicagoBozeman

ORD - BZN

ORDBZN

Chicago O'Hare Intl

Fri 3/7

9:15 am-11:47 am

Nonstop3h 32m

Bozeman Gallatin Field

Mon 3/10

8:23 am-12:30 pm

Nonstop3h 07m

$304

St. LouisBozeman

STL - BZN

STLBZN

Lambert-St Louis

Wed 3/12

11:05 am-9:10 pm

2 stops11h 05m

Bozeman Gallatin Field

Wed 4/2

2:10 pm-9:50 pm

1 stop6h 40m

$308

ChicagoBozeman

ORD - BZN

ORDBZN

Chicago O'Hare Intl

Tue 8/19

9:30 am-2:15 pm

1 stop5h 45m

Bozeman Gallatin Field

Sat 8/30

11:37 am-6:05 pm

1 stop5h 28m

$309

ChicagoBozeman

MDW - BZN

MDWBZN

Chicago Midway

Fri 3/14

2:55 pm-11:32 pm

2 stops9h 37m

Bozeman Gallatin Field

Thu 3/20

6:00 am-2:15 pm

1 stop7h 15m

$309

ChicagoBozeman

ORD - BZN

ORDBZN

Chicago O'Hare Intl

Wed 4/2

10:01 am-9:31 am

2 stops24h 30m

Bozeman Gallatin Field

Tue 4/8

2:53 pm-9:24 am

3 stops41h 31m

$313

ChicagoBozeman

MDW - BZN

MDWBZN

Chicago Midway

Thu 4/24

2:40 pm-11:25 pm

2 stops9h 45m

Bozeman Gallatin Field

Mon 4/28

6:00 am-1:45 pm

1 stop6h 45m

$314

ChicagoBozeman

ORD - BZN

ORDBZN

Chicago O'Hare Intl

Fri 3/7

5:00 am-12:08 pm

1 stop8h 08m

Bozeman Gallatin Field

Mon 3/10

3:50 pm-12:18 am

1 stop7h 28m

$324

MolineBozeman

MLI - BZN

MLIBZN

Moline Quad-City

Fri 3/7

8:40 am-3:31 pm

1 stop7h 51m

Bozeman Gallatin Field

Sun 3/9

7:20 am-9:01 pm

2 stops12h 41m

$345

ChicagoBozeman

ORD - BZN

ORDBZN

Chicago O'Hare Intl

Thu 4/17

7:00 am-1:59 pm

1 stop7h 59m

Bozeman Gallatin Field

Thu 4/24

2:54 pm-11:59 pm

1 stop8h 05m

$348

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/22

Showing 1-10 of 36 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.

Travel insights for flights from Illinois to Bozeman

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

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 June is currently the most expensive (average of $520). 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 February 22, 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.

Weekly flight availability from Illinois to Bozeman

Explore weekly flight availability from Illinois to Bozeman. 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 February 22, 2025.

The most flights from USIL to BZN are scheduled on a Wednesday (5 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (2 on average).

Rainfall in Bozeman by month

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

In terms of precipitation, rainfall in Bozeman ranges from 0.4 - 2.0 inches per month. May is typically the wettest month, when rainfall can reach 2.0 in. January is typically the driest time to visit Bozeman when rainfall is around 0.4 in.

Temperature in Bozeman by month

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

If weather is an important factor for your trip to Bozeman, 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 64.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 15.8 F).

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 February 22, 2025.
To help decide which airline to fly from Illinois to Bozeman, see what other customers have to say about Southwest, Alaska Airlines and Delta. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,395 reviews

Crew

8.7

Overall

8.1

Entertainment

7.6

Food

7.1

Comfort

8.1

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Southwest
8.1
Very good
4,395 reviews
Southwest
8.1
Very good
4,395 reviews

Crew

8.7

Overall

8.1

Entertainment

7.6

Food

7.1

Comfort

8.1

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Alaska Airlines
8.0
Very good
9,700 reviews
Southwest
8.1
Very good
4,395 reviews

Crew

8.7

Overall

8.1

Entertainment

7.6

Food

7.1

Comfort

8.1

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Delta
8.0
Very good
8,212 reviews
Southwest
8.1
Very good
4,395 reviews

Crew

8.7

Overall

8.1

Entertainment

7.6

Food

7.1

Comfort

8.1

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Hawaiian Airlines
7.9
Good
2,314 reviews
Southwest
8.1
Very good
4,395 reviews

Crew

8.7

Overall

8.1

Entertainment

7.6

Food

7.1

Comfort

8.1

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

United Airlines
7.4
Good
8,759 reviews
Southwest
8.1
Very good
4,395 reviews

Crew

8.7

Overall

8.1

Entertainment

7.6

Food

7.1

Comfort

8.1

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

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 $133. Delta flights start at $135 while deals on American Airlines start at $155 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 Envoy Air (71%), American Airlines (68%) and Alaska Airlines (68%).

  • What are the cheapest flights from Illinois to Bozeman?

    The cheapest flight price from Illinois to Bozeman is $144. On average you can expect to pay $740. The most popular route, (Chicago O'Hare Intl - Bozeman Gallatin Field), can usually be booked for $237.

  • 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 June is currently the most expensive (average of $520). 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 6 airlines flying from Illinois to Bozeman

Discover the top 6 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 February 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
Sun Country AirCheapest$175Average$245FlexibilityNo cancel feeOn-time83%
American AirlinesCheapest$289Average$435FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$291Average$504FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$296Average$475FlexibilityNo cancel feeOn-time63%
DeltaCheapest$304Average$451FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$341Average$478FlexibilityNo cancel feeOn-time69%
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