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$304+ Cheap flights from Butte (BTM) 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 4/5. Fares are subject to change and may not be available on all flights or dates of travel.
BTM — ORD
Mar 21 — Mar 281
Sat 3/21
Sat 3/28
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 19, 2026.

This United Airlines deal was found by Cheapflights users on 2/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/510:00 am
BTM
-
STL
1 stop5h 56m
United Airlines
Mon 3/92:50 pm
STL
-
BTM
1 stop8h 36m
United Airlines
Deal found 2/17$334
This United Airlines deal was found by Cheapflights users on 2/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/410:00 am
BTM
-
ORD
1 stop7h 55m
United Airlines
Sun 3/82:45 pm
ORD
-
BTM
1 stop8h 41m
United Airlines
Deal found 2/17$382
This United Airlines deal was found by Cheapflights users on 2/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/289:24 am
BTM
-
ORD
1 stop8h 30m
United Airlines
Sat 5/28:15 pm
ORD
-
BTM
1 stop27h 07m
United Airlines
Deal found 2/18$430
This Delta deal was found by Cheapflights users on 2/17. 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.
Wed 3/46:10 pm
BTM
-
ORD
2 stops13h 28m
Delta
Sun 3/87:10 am
ORD
-
BTM
2 stops10h 58m
Delta
Deal found 2/17$460
This United Airlines deal was found by Cheapflights users on 2/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/2510:00 am
BTM
-
STL
1 stop5h 58m
United Airlines
Sat 2/284:30 pm
STL
-
BTM
1 stop6h 56m
United Airlines
Deal found 2/18$484
This United Airlines deal was found by Cheapflights users on 2/16. 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 stop6h 05m
United Airlines
Sat 2/282:40 pm
ORD
-
BTM
1 stop8h 46m
United Airlines
Deal found 2/16$484
This United Airlines deal was found by Cheapflights users on 2/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/99:24 am
BTM
-
ORD
1 stop13h 04m
United Airlines
Sun 4/127:58 pm
ORD
-
BTM
2 stops27h 24m
United Airlines
Deal found 2/17$533
This United Airlines deal was found by Cheapflights users on 2/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/2710:00 am
BTM
-
MLI
2 stops10h 27m
United Airlines
Tue 3/35:22 pm
MLI
-
BTM
2 stops30h 04m
United Airlines
Deal found 2/17$538
This United Airlines deal was found by Cheapflights users on 2/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/510:00 am
BTM
-
ORD
1 stop7h 45m
United Airlines
Mon 3/98:10 pm
ORD
-
BTM
2 stops27h 16m
United Airlines
Deal found 2/18$548
This Delta deal was found by Cheapflights users on 2/17. 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.
Wed 3/46:10 pm
BTM
-
MDW
2 stops14h 44m
Delta
Sun 3/86:00 am
MDW
-
BTM
2 stops12h 08m
Delta
Deal found 2/17$730
This United Airlines deal was found by Cheapflights users on 2/16. 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
2 stops10h 05m
United Airlines
Wed 2/254:49 pm
STL
-
BTM
2 stops30h 37m
United Airlines
Deal found 2/16$782
This Delta deal was found by Cheapflights users on 2/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/56:10 pm
BTM
-
MDW
2 stops14h 44m
Delta
Mon 3/99:35 am
MDW
-
BTM
2 stops8h 33m
Delta
Deal found 2/18$1,039

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 19, 2026.

Round-trip from

$334
(United Airlines)

One-way from

$304
(Delta)
From Butte Silver Bow Co to Illinois
Search Deals
One-way flight 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 19, 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

ButteSt. Louis

BTM - STL

BTMSTL

Butte Silver Bow Co

Thu 3/5

10:00 am-4:56 pm

1 stop5h 56m

Lambert-St Louis

Mon 3/9

2:50 pm-10:26 pm

1 stop8h 36m

$334

ButteChicago

BTM - ORD

BTMORD

Butte Silver Bow Co

Wed 3/4

10:00 am-6:55 pm

1 stop7h 55m

Chicago O'Hare Intl

Sun 3/8

2:45 pm-10:26 pm

1 stop8h 41m

$382

ButteChicago

BTM - ORD

BTMORD

Butte Silver Bow Co

Tue 4/28

9:24 am-6:54 pm

1 stop8h 30m

Chicago O'Hare Intl

Sat 5/2

8:15 pm-10:22 pm

1 stop27h 07m

$430

ButteChicago

BTM - ORD

BTMORD

Butte Silver Bow Co

Wed 3/4

6:10 pm-8:38 am

2 stops13h 28m

Chicago O'Hare Intl

Sun 3/8

7:10 am-5:08 pm

2 stops10h 58m

$460

ButteChicago

BTM - ORD

BTMORD

Butte Silver Bow Co

Thu 4/9

9:24 am-11:28 pm

1 stop13h 04m

Chicago O'Hare Intl

Sun 4/12

7:58 pm-10:22 pm

2 stops27h 24m

$533

ButteChicago

BTM - ORD

BTMORD

Butte Silver Bow Co

Thu 3/5

10:00 am-6:45 pm

1 stop7h 45m

Chicago O'Hare Intl

Mon 3/9

8:10 pm-10:26 pm

2 stops27h 16m

$548

ButteChicago

BTM - MDW

BTMMDW

Butte Silver Bow Co

Wed 3/4

6:10 pm-9:54 am

2 stops14h 44m

Chicago Midway

Sun 3/8

6:00 am-5:08 pm

2 stops12h 08m

$730

ButteChicago

BTM - MDW

BTMMDW

Butte Silver Bow Co

Thu 3/5

6:10 pm-9:54 am

2 stops14h 44m

Chicago Midway

Mon 3/9

9:35 am-5:08 pm

2 stops8h 33m

$1,039

ButteChicago

BTM - MDW

BTMMDW

Butte Silver Bow Co

Mon 3/2

6:10 pm-9:54 am

2 stops14h 44m

Chicago Midway

Fri 3/6

9:34 am-5:09 pm

2 stops8h 35m

$1,204

ButteChicago

BTM - MDW

BTMMDW

Butte Silver Bow Co

Thu 4/9

6:10 pm-9:56 am

2 stops14h 46m

Chicago Midway

Sun 4/12

9:35 am-5:08 pm

2 stops8h 33m

$1,429

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/18

Showing 1-10 of 33 results
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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 5h 56m. Your travel time can differ by up to 7h 32m. There are 1228 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 - Lambert-St Louis 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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