HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Illinois

$126+ 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 3/9. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — ORD
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
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 February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$269
(Delta)

One-way from

$126
(Mytrip)

Popular in

November

Cheapest in

January

Average price

$409

Good round-trip deal

$460 or less

Good one-way deal

$216 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. 9% potential increase in price ($44 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 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 February 20, 2025.

This Delta deal was found by Cheapflights users on 2/19. 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.
Wed 4/21:20 pmBZN - ORD
1 stop7h 25mDelta
Mon 4/146:55 pmORD - BZN
1 stop6h 00mDelta
Deal found 2/19$269
This American Airlines deal was found by Cheapflights users on 2/20. 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.
Wed 11/51:47 pmBZN - STL
1 stop7h 42mAmerican Airlines
Mon 11/105:26 amSTL - BZN
1 stop8h 08mAmerican Airlines
Deal found 2/20$287
This United Airlines deal was found by Cheapflights users on 2/19. 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.
Fri 5/212:40 pmBZN - ORD
Nonstop3h 07mUnited Airlines
Sun 5/49:20 pmORD - BZN
Nonstop3h 25mUnited Airlines
Deal found 2/19$290
This Delta deal was found by Cheapflights users on 2/19. 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.
Wed 4/26:00 amBZN - MDW
1 stop7h 15mDelta
Mon 4/147:00 pmMDW - BZN
1 stop5h 55mDelta
Deal found 2/19$304
This Expedia deal was found by Cheapflights users on 2/19. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/152:55 pmBZN - ORD
1 stop8h 04mHawaiian Airlines
Sat 11/17:45 amORD - BZN
1 stop7h 20mHawaiian Airlines
Deal found 2/19$308
This Southwest deal was found by Cheapflights users on 2/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/222:20 pmBZN - MDW
2 stops9h 05mSouthwest
Thu 4/245:25 amMDW - BZN
1 stop5h 20mSouthwest
Deal found 2/20$314
This American Airlines deal was found by Cheapflights users on 2/20. 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 7/171:44 pmBZN - ORD
Nonstop3h 01mAmerican Airlines
Mon 7/219:45 amORD - BZN
Nonstop3h 31mAmerican Airlines
Deal found 2/20$344
This United Airlines deal was found by Cheapflights users on 2/19. 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.
Fri 3/72:35 pmBZN - STL
1 stop5h 59mUnited Airlines
Tue 3/111:05 pmSTL - BZN
2 stops9h 05mUnited Airlines
Deal found 2/19$350
This Delta deal was found by Cheapflights users on 2/19. 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.
Wed 11/57:25 amBZN - STL
2 stops9h 38mDelta
Mon 11/107:20 amSTL - BZN
1 stop6h 47mDelta
Deal found 2/19$356
This Alaska Airlines deal was found by Cheapflights users on 2/19. 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.
Thu 4/32:53 pmBZN - STL
1 stop8h 06mAlaska Airlines
Mon 4/73:11 pmSTL - BZN
2 stops23h 52mAlaska Airlines
Deal found 2/19$365
This Alaska Airlines deal was found by Cheapflights users on 2/19. 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.
Fri 2/282:53 pmBZN - ORD
1 stop8h 06mAlaska Airlines
Tue 3/47:45 amORD - BZN
1 stop7h 13mAlaska Airlines
Deal found 2/19$369
This Southwest deal was found by Cheapflights users on 2/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/1610:30 amBZN - ORD
2 stops10h 50mSouthwest
Mon 5/196:55 pmORD - BZN
1 stop5h 30mSouthwest
Deal found 2/19$394

Find flights from Bozeman to Illinois within your budget

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 February 20, 2025.

Fly from

Bozeman

Fly to

Illinois

Route

Depart

Return

Price

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Wed 4/2

1:20 pm-9:45 pm

1 stop7h 25m

Chicago O'Hare Intl

Mon 4/14

6:55 pm-11:55 pm

1 stop6h 00m

$269

BozemanSt. Louis

BZN - STL

BZNSTL

Bozeman Gallatin Field

Thu 4/3

3:10 pm-11:29 pm

1 stop7h 19m

Lambert-St Louis

Mon 4/7

6:00 am-12:51 pm

1 stop7h 51m

$287

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Fri 5/2

12:40 pm-4:47 pm

Nonstop3h 07m

Chicago O'Hare Intl

Sun 5/4

9:20 pm-11:45 pm

Nonstop3h 25m

$290

BozemanChicago

BZN - MDW

BZNMDW

Bozeman Gallatin Field

Wed 4/2

6:00 am-2:15 pm

1 stop7h 15m

Chicago Midway

Mon 4/14

7:00 pm-11:55 pm

1 stop5h 55m

$304

BozemanChicago

BZN - MDW

BZNMDW

Bozeman Gallatin Field

Tue 4/22

2:20 pm-12:25 am

2 stops9h 05m

Chicago Midway

Thu 4/24

5:25 am-9:45 am

1 stop5h 20m

$314

BozemanSt. Louis

BZN - STL

BZNSTL

Bozeman Gallatin Field

Fri 3/7

1:58 pm-10:03 pm

1 stop7h 05m

Lambert-St Louis

Tue 3/11

7:02 am-12:07 pm

1 stop6h 05m

$344

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Thu 7/17

1:44 pm-5:45 pm

Nonstop3h 01m

Chicago O'Hare Intl

Mon 7/21

9:45 am-12:16 pm

Nonstop3h 31m

$344

BozemanSt. Louis

BZN - STL

BZNSTL

Bozeman Gallatin Field

Fri 3/7

2:35 pm-9:34 pm

1 stop5h 59m

Lambert-St Louis

Tue 3/11

1:05 pm-9:10 pm

2 stops9h 05m

$350

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Wed 5/14

2:54 pm-11:59 pm

1 stop8h 05m

Chicago O'Hare Intl

Fri 5/16

7:00 am-1:10 pm

1 stop7h 10m

$364

BozemanSt. Louis

BZN - STL

BZNSTL

Bozeman Gallatin Field

Thu 4/3

2:53 pm-11:59 pm

1 stop8h 06m

Lambert-St Louis

Mon 4/7

3:11 pm-2:03 pm

2 stops23h 52m

$365

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

Showing 1-10 of 29 results
1
2
3

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.

Travel insights for flights from Bozeman to Illinois

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

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 February 20, 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.

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 February 20, 2025.

The most flights from BZN to USIL are scheduled on a Monday (7 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (2 on average).

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 February 20, 2025.
See what other customers who have flown with Southwest, Alaska Airlines 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.
Southwest
8.1
Very good
4,412 reviews

Entertainment

7.6

Crew

8.7

Food

7.1

Comfort

8.1

Overall

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
4,412 reviews
Southwest
8.1
Very good
4,412 reviews

Entertainment

7.6

Crew

8.7

Food

7.1

Comfort

8.1

Overall

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
9,691 reviews
Southwest
8.1
Very good
4,412 reviews

Entertainment

7.6

Crew

8.7

Food

7.1

Comfort

8.1

Overall

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
8,227 reviews
Southwest
8.1
Very good
4,412 reviews

Entertainment

7.6

Crew

8.7

Food

7.1

Comfort

8.1

Overall

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
2,317 reviews
Southwest
8.1
Very good
4,412 reviews

Entertainment

7.6

Crew

8.7

Food

7.1

Comfort

8.1

Overall

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
8,771 reviews
Southwest
8.1
Very good
4,412 reviews

Entertainment

7.6

Crew

8.7

Food

7.1

Comfort

8.1

Overall

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 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 Delta, with whom users have recently found tickets for as low as $135. However, be on the lookout for offers from Alaska Airlines and Southwest, 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 (82%), United Airlines (82%) or Emirates (82%) 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 $148. On average you can expect to pay $612. The most popular route, (Bozeman Gallatin Field - Chicago O'Hare Intl), can usually be booked for $269.

  • 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.
Bozeman to Seattle flights
Bozeman to Denver flights
Missoula to Seattle flights
Missoula to Denver flights
Bozeman to Los Angeles flights
Billings to Dallas/Fort Worth flights
Billings to Seattle flights
Kalispell to Seattle flights
Bozeman to Las Vegas flights
Bozeman to San Diego flights
Bozeman to Minneapolis flights
Bozeman to Sky Harbor Intl flights
Bozeman to San Francisco flights
Bozeman to Atlanta flights
Bozeman to Nashville flights
Billings to Hobby flights
Helena to Las Vegas flights
Kalispell to Denver flights
Billings to Sky Harbor Intl flights
Missoula to O'Hare Intl flights
Kalispell to O'Hare Intl flights
Billings to Las Vegas flights
Bozeman to Portland flights
Missoula to Salt Lake City flights
Bozeman to O'Hare Intl flights
Bozeman to Newark flights
Bozeman to Philadelphia flights
Missoula to Dallas/Fort Worth flights
Missoula to Orlando flights
Missoula to Minneapolis flights
Missoula to Las Vegas flights
Bozeman to Miami flights
Bozeman to Salt Lake City flights
Missoula to New Orleans flights
Bozeman to Dallas/Fort Worth flights
Billings to Austin flights
Bozeman to Boston flights
Billings to Denver flights
Bozeman to Dulles Intl flights
Bozeman to Hobby flights
Bozeman to Ontario flights
Kalispell to Austin flights
Bozeman to Honolulu flights
Bozeman to Orlando flights
Helena to Detroit flights
Billings to George Bush Intcntl flights
Bozeman to Kahului flights
Bozeman to John F Kennedy Intl flights
Bozeman to Detroit 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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$256Average$410FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$284Average$407FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$297Average$346FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$334Average$534FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$388Average$390FlexibilityNo 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.