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$349+ 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 1/28. Fares are subject to change and may not be available on all flights or dates of travel.
BTM — ORD
Dec 16 — Dec 231
Tue 12/16
Tue 12/23
1 adult, Economy
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Cheap flight deals from Butte to Illinois

Keep the following information in mind while searching for Butte to Illinois flight deals. Data was last updated November 16, 2025.

Round-trip from

$344
(United Airlines)
From Butte Silver Bow Co to Illinois
Search Deals

Find 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 November 16, 2025.

This United Airlines deal was found by Cheapflights users on 11/14. 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 12/1010:00 amBTM - ORD
1 stop7h 55mUnited Airlines
Thu 12/117:10 amORD - BTM
1 stop16h 19mUnited Airlines
Deal found 11/14$747
This United Airlines deal was found by Cheapflights users on 11/15. 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.
Sun 11/309:47 amBTM - ORD
1 stop22h 53mUnited Airlines
Thu 12/42:40 pmORD - BTM
1 stop8h 49mUnited Airlines
Deal found 11/15$876
This Delta deal was found by Cheapflights users on 11/15. 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 11/306:10 pmBTM - ORD
2 stops13h 31mDelta
Thu 12/45:30 amORD - BTM
2 stops12h 40mDelta
Deal found 11/15$1,304
This Delta deal was found by Cheapflights users on 11/15. 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 11/306:10 pmBTM - MDW
2 stops14h 42mDelta
Thu 12/46:00 amMDW - BTM
2 stops12h 10mDelta
Deal found 11/15$1,725

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 November 16, 2025.
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

ButteMoline

BTM - MLI

BTMMLI

Butte Silver Bow Co

Wed 1/28

9:14 am-9:36 pm

2 stops11h 22m

Moline Quad-City

Sat 1/31

10:47 am-10:45 pm

2 stops12h 58m

$349

ButteSt. Louis

BTM - STL

BTMSTL

Butte Silver Bow Co

Sat 1/10

9:14 am-8:58 pm

1 stop10h 44m

Lambert-St Louis

Wed 1/14

6:00 pm-10:45 pm

1 stop5h 45m

$422

ButteChicago

BTM - MDW

BTMMDW

Butte Silver Bow Co

Sat 4/25

6:10 pm-9:51 am

2 stops14h 41m

Chicago Midway

Wed 4/29

1:05 pm-5:05 pm

2 stops29h 00m

$694

ButteChicago

BTM - ORD

BTMORD

Butte Silver Bow Co

Wed 12/10

10:00 am-6:55 pm

1 stop7h 55m

Chicago O'Hare Intl

Thu 12/11

7:10 am-10:29 pm

1 stop16h 19m

$747

ButteChicago

BTM - ORD

BTMORD

Butte Silver Bow Co

Sun 11/30

9:47 am-9:40 am

1 stop22h 53m

Chicago O'Hare Intl

Thu 12/4

2:40 pm-10:29 pm

1 stop8h 49m

$876

ButteChicago

BTM - ORD

BTMORD

Butte Silver Bow Co

Sun 11/30

6:10 pm-8:41 am

2 stops13h 31m

Chicago O'Hare Intl

Thu 12/4

5:30 am-5:10 pm

2 stops12h 40m

$1,304

ButteChicago

BTM - MDW

BTMMDW

Butte Silver Bow Co

Sun 11/30

6:10 pm-9:52 am

2 stops14h 42m

Chicago Midway

Thu 12/4

6:00 am-5:10 pm

2 stops12h 10m

$1,725

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/15

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 11h 22m. Your travel time can differ by up to 3h 19m. There are 1137 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 - Lambert-St Louis.

  • 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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