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$415+ Cheap flights from Butte (BTM) to Illinois

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/28. Fares are subject to change and may not be available on all flights or dates of travel.
BTM — ORD
Mar 10 — Mar 171
Tue 3/10
Tue 3/17
1 adult, Economy
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Cheap flight deals from Butte to Illinois

Cheapest flights from Butte to Illinois
Explore the most affordable flight options available from Butte to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 8, 2026.

This United Airlines deal was found by Cheapflights users on 2/6. 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.
Sat 2/2810:00 am
BTM
-
MLI
2 stops10h 27m
United Airlines
Tue 3/310:46 am
MLI
-
BTM
2 stops12h 40m
United Airlines
Deal found 2/6$415
This United Airlines deal was found by Cheapflights users on 2/7. 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 2/2410:00 am
BTM
-
ORD
1 stop7h 55m
United Airlines
Sat 2/288:07 pm
ORD
-
BTM
1 stop27h 19m
United Airlines
Deal found 2/7$430
This United Airlines deal was found by Cheapflights users on 2/4. 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.
Sat 2/2110:00 am
BTM
-
STL
1 stop9h 26m
United Airlines
Wed 2/256:00 pm
STL
-
BTM
1 stop5h 26m
United Airlines
Deal found 2/4$492
This United Airlines deal was found by Cheapflights users on 2/7. 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 3/910:00 am
BTM
-
MLI
2 stops27h 12m
United Airlines
Mon 3/167:22 pm
MLI
-
BTM
2 stops28h 04m
United Airlines
Deal found 2/7$527
This United Airlines deal was found by Cheapflights users on 2/6. 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 6/1710:00 am
BTM
-
ORD
1 stop22h 42m
United Airlines
Mon 6/225:00 am
ORD
-
BTM
1 stop18h 27m
United Airlines
Deal found 2/6$528
This United Airlines deal was found by Cheapflights users on 2/5. 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 2/2010:00 am
BTM
-
ORD
1 stop22h 38m
United Airlines
Tue 2/242:40 pm
ORD
-
BTM
1 stop8h 46m
United Airlines
Deal found 2/5$642
This Delta deal was found by Cheapflights users on 2/7. 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.
Sun 2/226:10 pm
BTM
-
MDW
2 stops14h 44m
Delta
Thu 2/266:00 am
MDW
-
BTM
2 stops12h 09m
Delta
Deal found 2/7$1,249
This Delta deal was found by Cheapflights users on 2/6. 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 6/176:10 pm
BTM
-
MDW
2 stops14h 41m
Delta
Mon 6/229:20 am
MDW
-
BTM
2 stops8h 35m
Delta
Deal found 2/6$1,824

Find flight deals from Butte to Illinois

Keep the following information in mind while searching for Butte to Illinois flight deals. Data was last updated February 8, 2026.

Round-trip from

$415
(United Airlines)
From Butte Silver Bow Co to Illinois
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Butte 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 8, 2026.
Use the filters below to find and compare flights from Butte to Illinois that are best for you.

Fly from

Butte

Fly to

Illinois

Route

Depart

Return

Price

ButteChicago

BTM - ORD

BTMORD

Butte Silver Bow Co

Tue 2/24

10:00 am-6:55 pm

1 stop7h 55m

Chicago O'Hare Intl

Sat 2/28

8:07 pm-10:26 pm

1 stop27h 19m

$430

ButteMoline

BTM - MLI

BTMMLI

Butte Silver Bow Co

Sat 2/28

10:00 am-9:27 pm

2 stops10h 27m

Moline Quad-City

Tue 3/3

8:49 am-10:26 pm

1 stop14h 37m

$443

ButteSt. Louis

BTM - STL

BTMSTL

Butte Silver Bow Co

Sat 2/21

10:00 am-8:26 pm

1 stop9h 26m

Lambert-St Louis

Wed 2/25

6:00 pm-10:26 pm

1 stop5h 26m

$492

ButteMoline

BTM - MLI

BTMMLI

Butte Silver Bow Co

Mon 3/9

10:00 am-2:12 pm

2 stops27h 12m

Moline Quad-City

Mon 3/16

7:22 pm-10:26 pm

2 stops28h 04m

$527

ButteChicago

BTM - ORD

BTMORD

Butte Silver Bow Co

Wed 6/17

10:00 am-9:42 am

1 stop22h 42m

Chicago O'Hare Intl

Mon 6/22

5:00 am-10:27 pm

1 stop18h 27m

$528

ButteChicago

BTM - ORD

BTMORD

Butte Silver Bow Co

Fri 2/20

10:00 am-9:38 am

1 stop22h 38m

Chicago O'Hare Intl

Tue 2/24

2:40 pm-10:26 pm

1 stop8h 46m

$642

ButteChicago

BTM - MDW

BTMMDW

Butte Silver Bow Co

Sun 2/22

6:10 pm-9:54 am

2 stops14h 44m

Chicago Midway

Thu 2/26

6:00 am-5:09 pm

2 stops12h 09m

$1,249

ButteChicago

BTM - MDW

BTMMDW

Butte Silver Bow Co

Wed 6/17

6:10 pm-9:51 am

2 stops14h 41m

Chicago Midway

Mon 6/22

9:20 am-4:55 pm

2 stops8h 35m

$1,824

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/7

Best time to book a flight from Butte to Illinois

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

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

Currently, October is the cheapest month in which you can book a flight from Butte to Illinois (average of $169). Flying from Butte to Illinois in November is currently the most expensive (average of $298). 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.

Related info for your journey

Find useful and relevant information for your journey from Butte 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 Butte to Illinois?

    Most people fly from Butte Silver Bow Co (BTM) if they book a flight from Butte to Illinois. Butte Silver Bow Co is conveniently located just 3.8 mi from Butte’s city center.

  • How long is the flight from Butte to Illinois?

    United Airlines and Delta can get you from Butte to Illinois in just under 7h 55m. Your travel time can differ by up to 6h 49m. There are 1247 mi between Butte and Illinois. This flight may include one or multiple stops.

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

    The most popular route from Butte to Illinois is Butte Silver Bow Co - Chicago O'Hare Intl. You may also consider Butte Silver Bow Co - Chicago Midway or Butte Silver Bow Co - Moline Quad-City.

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

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

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

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

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

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

    Currently, October is the cheapest month in which you can book a flight from Butte to Illinois (average of $169). Flying from Butte to Illinois in November is currently the most expensive (average of $298). 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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