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$97+ Cheap flights from Bozeman (BZN) 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 2/19. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — ORD
Dec 20 — Dec 271
Sat 12/20
Sat 12/27
1 adult, Economy
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Cheap flight deals from Bozeman to Illinois

Keep the following information in mind while searching for Bozeman to Illinois flight deals. Data was last updated November 20, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$176
(Kiwi.com)

One-way from

$97
(Alaska Airlines)

Popular in

April

Cheapest in

October

Average price

$378

Good round-trip deal

$301 or less

Good one-way deal

$210 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 Bozeman Gallatin Field to Illinois
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One-way flight from Bozeman Gallatin Field to Illinois
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Highest demand for flights based on searches. 17% potential increase in price ($78 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Price to beat on a round-trip flight from Bozeman Gallatin Field to Illinois.
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Price to beat on a one-way flight from Bozeman Gallatin Field to Illinois.
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Find flight deals from Bozeman to Illinois

Cheapest flights from Bozeman to Illinois
Explore the most affordable flight options available from Bozeman to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 20, 2025.

This Kiwi.com deal was found by Cheapflights users on 11/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/112:58 pmBZN - ORD
1 stop8h 01mHawaiian Airlines
Sun 12/146:00 amORD - BZN
1 stop9h 04mHawaiian Airlines
Deal found 11/18$176
This American Airlines deal was found by Cheapflights users on 11/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/261:34 pmBZN - ORD
Nonstop3h 20mAmerican Airlines
Sat 1/38:25 amORD - BZN
Nonstop3h 44mAmerican Airlines
Deal found 11/19$189
This American Airlines deal was found by Cheapflights users on 11/20. 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 12/111:46 pmBZN - ORD
1 stop8h 40mAmerican Airlines
Mon 1/127:37 pmORD - BZN
Nonstop3h 25mAmerican Airlines
Deal found 11/20$199
This American Airlines deal was found by Cheapflights users on 11/18. 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.
Mon 12/293:44 pmBZN - ORD
1 stop6h 31mAmerican Airlines
Sun 1/47:36 amORD - BZN
1 stop8h 18mAmerican Airlines
Deal found 11/18$209
This Delta deal was found by Cheapflights users on 11/19. 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.
Thu 12/45:30 amBZN - ORD
1 stop6h 10mDelta
Mon 12/86:00 amORD - BZN
1 stop8h 12mDelta
Deal found 11/19$217
This United Airlines deal was found by Cheapflights users on 11/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/412:50 pmBZN - ORD
Nonstop2h 59mUnited Airlines
Mon 12/89:20 amORD - BZN
Nonstop3h 24mUnited Airlines
Deal found 11/19$219
This Delta deal was found by Cheapflights users on 11/19. 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.
Fri 12/52:36 pmBZN - MDW
1 stop8h 11mDelta
Tue 12/96:00 amMDW - BZN
1 stop8h 26mDelta
Deal found 11/19$228
This Delta deal was found by Cheapflights users on 11/19. 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.
Fri 12/55:30 amBZN - ORD
1 stop6h 10mDelta
Tue 12/96:45 amORD - BZN
1 stop7h 41mDelta
Deal found 11/19$228
This Alaska Airlines deal was found by Cheapflights users on 11/19. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/811:46 amBZN - ORD
1 stop9h 44mAlaska Airlines
Thu 12/115:51 pmORD - BZN
1 stop18h 15mAlaska Airlines
Deal found 11/19$237
This American Airlines deal was found by Cheapflights users on 11/18. 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.
Thu 12/41:46 pmBZN - STL
1 stop7h 39mAmerican Airlines
Mon 12/87:00 amSTL - BZN
1 stop6h 54mAmerican Airlines
Deal found 11/18$239
This United Airlines deal was found by Cheapflights users on 11/20. 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 12/52:42 pmBZN - STL
1 stop5h 15mUnited Airlines
Tue 12/910:00 amSTL - BZN
2 stops12h 39mUnited Airlines
Deal found 11/20$244
This Delta deal was found by Cheapflights users on 11/17. 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 12/167:25 amBZN - STL
2 stops10h 45mDelta
Wed 12/176:00 amSTL - BZN
2 stops9h 18mDelta
Deal found 11/17$254

Cheapflights Fare Finder

 
Customize your flight search to find flights from Bozeman 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 November 20, 2025.
Use the filters below to find and compare flights from Bozeman to Illinois that are best for you.

Fly from

Bozeman

Fly to

Illinois

Route

Depart

Return

Price

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Thu 12/11

2:58 pm-11:59 pm

1 stop8h 01m

Chicago O'Hare Intl

Sun 12/14

6:00 am-2:04 pm

1 stop9h 04m

$176

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Mon 12/29

7:15 am-11:34 am

Nonstop3h 19m

Chicago O'Hare Intl

Sun 1/4

7:58 pm-10:29 pm

Nonstop3h 31m

$189

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Fri 12/26

3:44 pm-11:15 pm

1 stop6h 31m

Chicago O'Hare Intl

Sat 1/3

8:25 am-11:09 am

Nonstop3h 44m

$199

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Sat 2/7

4:16 pm-11:59 pm

1 stop6h 43m

Chicago O'Hare Intl

Mon 2/9

2:36 pm-9:33 pm

1 stop7h 57m

$209

BozemanSt. Louis

BZN - STL

BZNSTL

Bozeman Gallatin Field

Fri 2/20

5:20 pm-12:50 am

1 stop6h 30m

Lambert-St Louis

Mon 2/23

5:40 am-10:20 am

1 stop5h 40m

$211

BozemanChicago

BZN - MDW

BZNMDW

Bozeman Gallatin Field

Fri 2/13

6:00 am-1:09 pm

1 stop6h 09m

Chicago Midway

Tue 2/17

1:49 pm-8:00 pm

1 stop7h 11m

$217

BozemanChicago

BZN - MDW

BZNMDW

Bozeman Gallatin Field

Thu 2/26

6:00 am-1:09 pm

1 stop6h 09m

Chicago Midway

Mon 3/2

1:49 pm-8:00 pm

1 stop7h 11m

$217

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Sat 2/7

5:15 am-12:44 pm

1 stop6h 29m

Chicago O'Hare Intl

Mon 2/9

2:20 pm-10:27 pm

1 stop9h 07m

$217

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Thu 1/29

5:15 am-12:41 pm

1 stop6h 26m

Chicago O'Hare Intl

Sun 2/1

7:30 am-2:20 pm

1 stop7h 50m

$217

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Fri 2/13

3:00 pm-11:55 pm

1 stop7h 55m

Chicago O'Hare Intl

Tue 2/17

7:40 am-2:20 pm

1 stop7h 40m

$217

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/19

Showing 1-10 of 52 results
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Best time to book a flight from Bozeman to Illinois

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

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

Currently, October is the cheapest month in which you can book a flight from Bozeman to Illinois (average of $169). Flying from Bozeman to Illinois in January is currently the most expensive (average of $606). 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 BZN to IL?

Find hourly flight availability from Bozeman 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 November 20, 2025.

When flying from Bozeman to Illinois, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 40% versus a flight in the morning.

Weekly flight availability from Bozeman to Illinois

Explore weekly flight availability from Bozeman to Illinois. 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 November 20, 2025.

The most flights from BZN to USIL are scheduled on a Tuesday (2 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (1 on average).

How much does it cost to fly round-trip from Bozeman to Illinois?

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 November 20, 2025.
Get a feel of what it's like to fly with Southwest, Delta, and United Airlines from Bozeman to Illinois by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,251 reviews

Boarding

8.1

Comfort

8.0

Food

7.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,251 reviews
Southwest
8.0
Very good
4,251 reviews

Boarding

8.1

Comfort

8.0

Food

7.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
7.9
Good
8,002 reviews
Southwest
8.0
Very good
4,251 reviews

Boarding

8.1

Comfort

8.0

Food

7.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
9,028 reviews
Southwest
8.0
Very good
4,251 reviews

Boarding

8.1

Comfort

8.0

Food

7.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
11,047 reviews
Southwest
8.0
Very good
4,251 reviews

Boarding

8.1

Comfort

8.0

Food

7.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

Find useful and relevant information for your journey from Bozeman to Illinois. 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 from for flights from Bozeman to Illinois?

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

  • How long is the flight from Bozeman to Illinois?

    Departing from Bozeman to Illinois will take you 3h 19m. The distance between Bozeman and Illinois is about 1182 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    The cheapest airline one-way is Alaska Airlines, with whom users have recently found tickets for as low as $97. However, be on the lookout for offers from Southwest and Delta, as they are both options that can get you from Bozeman to Illinois for a low price.

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

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

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

    No one likes to see their flight delayed. When booking a flight from Bozeman to Illinois consider choosing Lufthansa (88%), United Airlines (86%) or Emirates (84%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Bozeman to Illinois?

    The cheapest flight price from Bozeman to Illinois is $124. On average you can expect to pay $369. The most popular route, (Bozeman Gallatin Field - Chicago O'Hare Intl), can usually be booked for $176.

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

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

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

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

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

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

    Currently, October is the cheapest month in which you can book a flight from Bozeman to Illinois (average of $169). Flying from Bozeman to Illinois in January is currently the most expensive (average of $606). 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 Bozeman to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Bozeman to Illinois

Discover the top 3 airlines that operate flights from Bozeman 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 November 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$191Average$297FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$229Average$469FlexibilityNo cancel feeOn-time69%
DeltaCheapest$236Average$401FlexibilityNo cancel feeOn-timeN/A

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