HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Illinois

$37+ 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 6/15. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — ORD
May 6 — May 131
Tue 5/6
Tue 5/13
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Bozeman to Illinois with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 May 1, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$211
(United Airlines)

One-way from

$105
(Alaska Airlines)

Popular in

November

Cheapest in

January

Average price

$422

Good round-trip deal

$402 or less

Good one-way deal

$180 or less
Provider with most accurate pricing for Bozeman Gallatin Field-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Bozeman Gallatin Field-Chicago (CHI) flights.
Search Deals
From Bozeman Gallatin Field to Illinois
Search Deals
One-way flight from Bozeman Gallatin Field to Illinois
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($57 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2025
Search Deals
Price to beat on a round-trip flight from Bozeman Gallatin Field to Illinois.
Search Deals
Price to beat on a one-way flight from Bozeman Gallatin Field to Illinois.
Search Deals

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 May 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.
Fri 9/123:22 pmBZN - ORD
Nonstop3h 13mAmerican Airlines
Mon 9/1512:17 pmORD - BZN
Nonstop3h 15mAmerican Airlines
Deal found 4/30$197
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.
Thu 6/54:21 pmBZN - ORD
1 stop5h 20mUnited Airlines
Mon 6/98:05 pmORD - BZN
Nonstop3h 24mUnited Airlines
Deal found 4/29$221
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.
Thu 6/56:10 amBZN - MDW
1 stop6h 05mDelta
Mon 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.
Mon 8/115:45 amBZN - ORD
1 stop5h 36mDelta
Sat 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.
Fri 6/67:33 pmBZN - ORD
1 stop9h 07mAlaska Airlines
Sun 6/86:00 amORD - BZN
1 stop10h 05mAlaska Airlines
Deal found 4/29$240
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/35:05 amBZN - MDW
2 stops6h 30mSouthwest
Fri 7/42:25 pmMDW - BZN
1 stop7h 15mSouthwest
Deal found 4/30$275
This Hawaiian 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/253:08 pmBZN - ORD
1 stop7h 51mHawaiian Airlines
Mon 9/296:20 amORD - BZN
1 stop8h 54mHawaiian Airlines
Deal found 4/29$277
This Delta deal was found by Cheapflights users on 4/28. 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 5/275:40 amBZN - STL
1 stop6h 54mDelta
Tue 6/37:19 pmSTL - BZN
1 stop5h 45mDelta
Deal found 4/28$285
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.
Wed 5/2112:40 pmBZN - MLI
1 stop7h 54mUnited Airlines
Fri 5/309:05 amMLI - BZN
2 stops13h 34mUnited Airlines
Deal found 4/29$300
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/99:39 amBZN - ORD
2 stops33h 24mMultiple Airlines
Wed 5/149:02 pmORD - BZN
1 stop17h 42mMultiple Airlines
Deal found 4/29$349
This United Airlines deal was found by Cheapflights users on 4/28. 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 5/267:30 amBZN - STL
1 stop6h 23mUnited Airlines
Mon 6/25:00 amSTL - BZN
1 stop5h 53mUnited Airlines
Deal found 4/28$367
This Alaska Airlines deal was found by Cheapflights users on 4/28. 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.
Fri 5/307:33 pmBZN - STL
2 stops13h 18mAlaska Airlines
Tue 6/106:28 amSTL - BZN
2 stops13h 10mAlaska Airlines
Deal found 4/28$396

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 May 1, 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

Fri 9/12

3:22 pm-7:35 pm

Nonstop3h 13m

Chicago O'Hare Intl

Mon 9/15

12:17 pm-2:32 pm

Nonstop3h 15m

$197

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Thu 6/5

4:21 pm-10:41 pm

1 stop5h 20m

Chicago O'Hare Intl

Mon 6/9

8:05 pm-10:29 pm

Nonstop3h 24m

$221

BozemanChicago

BZN - MDW

BZNMDW

Bozeman Gallatin Field

Thu 6/5

6:10 am-1:15 pm

1 stop6h 05m

Chicago Midway

Mon 6/9

7:21 pm-11:56 pm

1 stop5h 35m

$237

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Mon 8/11

5:45 am-12:21 pm

1 stop5h 36m

Chicago O'Hare Intl

Sat 8/16

9:30 am-2:15 pm

1 stop5h 45m

$237

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Fri 6/6

7:33 pm-5:40 am

1 stop9h 07m

Chicago O'Hare Intl

Sun 6/8

6:00 am-3:05 pm

1 stop10h 05m

$240

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Wed 5/28

8:00 am-5:02 pm

1 stop8h 02m

Chicago O'Hare Intl

Mon 6/2

6:00 am-3:05 pm

1 stop10h 05m

$269

BozemanChicago

BZN - MDW

BZNMDW

Bozeman Gallatin Field

Thu 7/3

5:05 am-12:35 pm

2 stops6h 30m

Chicago Midway

Fri 7/4

2:25 pm-8:40 pm

1 stop7h 15m

$275

BozemanSt. Louis

BZN - STL

BZNSTL

Bozeman Gallatin Field

Tue 5/27

5:40 am-1:34 pm

1 stop6h 54m

Lambert-St Louis

Tue 6/3

7:19 pm-12:04 am

1 stop5h 45m

$285

BozemanMoline

BZN - MLI

BZNMLI

Bozeman Gallatin Field

Wed 5/21

12:40 pm-9:34 pm

1 stop7h 54m

Moline Quad-City

Fri 5/30

9:05 am-9:39 pm

2 stops13h 34m

$300

BozemanSt. Louis

BZN - STL

BZNSTL

Bozeman Gallatin Field

Mon 5/26

7:30 am-2:53 pm

1 stop6h 23m

Lambert-St Louis

Mon 6/2

5:00 am-9:53 am

1 stop5h 53m

$367

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 34 results
1
2
3
4

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, August is the cheapest month in which you can book a flight from Bozeman to Illinois (average of $245). Flying from Bozeman to Illinois 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 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 May 1, 2025.

When flying from Bozeman to Illinois, 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 Illinois by month

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

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

Temperature in Illinois by month

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

If weather is an important factor for your trip to Illinois, 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 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 May 1, 2025.
See what other customers who have flown with Alaska Airlines, Southwest and Delta from Bozeman to Illinois have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,968 reviews

Entertainment

7.1

Food

7.1

Crew

8.5

Comfort

7.9

Overall

8.0

Boarding

8.2

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
9,968 reviews
Alaska Airlines
8.0
Very good
9,968 reviews

Entertainment

7.1

Food

7.1

Crew

8.5

Comfort

7.9

Overall

8.0

Boarding

8.2

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
9,968 reviews

Entertainment

7.1

Food

7.1

Crew

8.5

Comfort

7.9

Overall

8.0

Boarding

8.2

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
9,968 reviews

Entertainment

7.1

Food

7.1

Crew

8.5

Comfort

7.9

Overall

8.0

Boarding

8.2

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
9,968 reviews

Entertainment

7.1

Food

7.1

Crew

8.5

Comfort

7.9

Overall

8.0

Boarding

8.2

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
9,968 reviews

Entertainment

7.1

Food

7.1

Crew

8.5

Comfort

7.9

Overall

8.0

Boarding

8.2

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 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.

  • 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 $105. However, be on the lookout for offers from Southwest and American Airlines, 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 (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 Bozeman to Illinois?

    The cheapest flight price from Bozeman to Illinois is $116. On average you can expect to pay $698. The most popular route, (Bozeman Gallatin Field - Chicago O'Hare Intl), can usually be booked for $211.

  • 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, August is the cheapest month in which you can book a flight from Bozeman to Illinois (average of $245). Flying from Bozeman to Illinois 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Bozeman to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
Kalispell to Seattle flights
Bozeman to Newark flights
Bozeman to Seattle flights
Bozeman to John F Kennedy Intl flights
Kalispell to Portland flights
Billings to Seattle flights
Missoula to Seattle flights
Bozeman to Los Angeles flights
Missoula to O'Hare Intl flights
Missoula to Denver flights
Bozeman to Atlanta flights
Missoula to Minneapolis flights
Bozeman to Philadelphia flights
Bozeman to O'Hare Intl flights
Bozeman to Denver flights
Bozeman to Boston flights
Bozeman to LaGuardia flights
Bozeman to Las Vegas flights
Bozeman to Minneapolis flights
Bozeman to San Francisco flights
Great Falls to Seattle flights
Kalispell to O'Hare Intl flights
Billings to Dallas/Fort Worth flights
Missoula to Nashville flights
Bozeman to San Diego flights
Bozeman to Cincinnati flights
Kalispell to Denver flights
Missoula to John F Kennedy Intl flights
Billings to Portland flights
Bozeman to Dulles Intl flights
Billings to O'Hare Intl flights
Missoula to LaGuardia flights
Butte to Seattle flights
Missoula to Las Vegas flights
Bozeman to Orlando flights
Bozeman to Baltimore flights
Bozeman to Miami flights
Missoula to Dulles Intl flights
Kalispell to San Francisco flights
Bozeman to Salt Lake City flights
Billings to Minneapolis flights
Billings to Denver flights
Missoula to Dallas/Fort Worth flights
Kalispell to Minneapolis flights
Missoula to Salt Lake City flights
Bozeman to Dallas/Fort Worth flights
Kalispell to Boston flights
Billings to Baltimore flights
Missoula to Sacramento flights
Missoula to Boston flights

Top 5 airlines flying from Bozeman to Illinois

Discover the top 5 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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$216Average$410FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$284Average$382FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$297Average$349FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$322Average$497FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$388Average$418FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.