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$310+ 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 2/2. Fares are subject to change and may not be available on all flights or dates of travel.
BTM — ORD
Feb 5 — Feb 121
Thu 2/5
Thu 2/12
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 January 6, 2026.

Round-trip from

$365
(United Airlines)

One-way from

$310
(Delta)
From Butte Silver Bow Co to Illinois
Search Deals
One-way flight from Butte Silver Bow Co to Illinois
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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 January 6, 2026.

This United Airlines deal was found by Cheapflights users on 1/5. 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.
Wed 2/49:14 amBTM - STL
1 stop6h 41mUnited Airlines
Sat 2/74:15 pmSTL - BTM
1 stop7h 30mUnited Airlines
Deal found 1/5$365
This United Airlines deal was found by Cheapflights users on 1/6. 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.
Tue 1/279:14 amBTM - ORD
1 stop8h 32mUnited Airlines
Sat 1/313:59 pmORD - BTM
1 stop7h 46mUnited Airlines
Deal found 1/6$365
This United Airlines deal was found by Cheapflights users on 1/4. 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.
Wed 1/289:14 amBTM - MLI
2 stops11h 22mUnited Airlines
Sat 1/3110:47 amMLI - BTM
2 stops12h 58mUnited Airlines
Deal found 1/4$370
This Delta deal was found by Cheapflights users on 1/6. 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.
Sat 1/176:10 pmBTM - ORD
2 stops14h 57mDelta
Tue 1/205:30 amORD - BTM
2 stops12h 41mDelta
Deal found 1/6$385
This United Airlines deal was found by Cheapflights users on 1/6. 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.
Fri 1/239:14 amBTM - ORD
1 stop8h 32mUnited Airlines
Sat 1/313:59 pmORD - BTM
1 stop7h 46mUnited Airlines
Deal found 1/6$390
This United Airlines deal was found by Cheapflights users on 1/6. 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 1/219:14 amBTM - ORD
1 stop6h 50mUnited Airlines
Sat 1/243:59 pmORD - BTM
1 stop7h 46mUnited Airlines
Deal found 1/6$415
This United Airlines deal was found by Cheapflights users on 1/6. 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 1/249:14 amBTM - ORD
1 stop8h 32mUnited Airlines
Sat 1/313:59 pmORD - BTM
1 stop7h 46mUnited Airlines
Deal found 1/6$425
This United Airlines deal was found by Cheapflights users on 1/6. 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.
Fri 1/239:14 amBTM - ORD
1 stop8h 32mUnited Airlines
Tue 1/278:45 amORD - BTM
1 stop15h 00mUnited Airlines
Deal found 1/6$431
This Delta deal was found by Cheapflights users on 1/6. 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.
Sat 1/176:10 pmBTM - ORD
2 stops14h 57mDelta
Wed 1/218:50 amORD - BTM
2 stops9h 21mDelta
Deal found 1/6$435
This United Airlines deal was found by Cheapflights users on 1/6. 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 1/179:14 amBTM - ORD
1 stop8h 32mUnited Airlines
Sat 1/243:59 pmORD - BTM
1 stop7h 46mUnited Airlines
Deal found 1/6$450
This United Airlines deal was found by Cheapflights users on 1/6. 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.
Tue 1/279:14 amBTM - ORD
1 stop8h 32mUnited Airlines
Sun 2/112:53 pmORD - BTM
1 stop10h 52mUnited Airlines
Deal found 1/6$453
This United Airlines deal was found by Cheapflights users on 1/5. 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.
Tue 1/209:14 amBTM - STL
2 stops13h 45mUnited Airlines
Sat 1/244:15 pmSTL - BTM
1 stop7h 30mUnited Airlines
Deal found 1/5$459

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 January 6, 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

Tue 5/5

10:00 am-4:55 pm

1 stop5h 55m

Lambert-St Louis

Sat 5/9

6:00 pm-10:22 pm

1 stop5h 22m

$365

ButteSt. Louis

BTM - STL

BTMSTL

Butte Silver Bow Co

Wed 2/4

9:14 am-4:55 pm

1 stop6h 41m

Lambert-St Louis

Sat 2/7

4:15 pm-10:45 pm

1 stop7h 30m

$365

ButteChicago

BTM - ORD

BTMORD

Butte Silver Bow Co

Tue 1/27

9:14 am-6:46 pm

1 stop8h 32m

Chicago O'Hare Intl

Sat 1/31

3:59 pm-10:45 pm

1 stop7h 46m

$365

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

$370

ButteChicago

BTM - ORD

BTMORD

Butte Silver Bow Co

Thu 1/22

9:14 am-6:46 pm

1 stop8h 32m

Chicago O'Hare Intl

Sat 1/24

3:59 pm-10:45 pm

1 stop7h 46m

$415

ButteChicago

BTM - ORD

BTMORD

Butte Silver Bow Co

Sat 1/17

6:10 pm-10:07 am

2 stops14h 57m

Chicago O'Hare Intl

Fri 1/23

6:15 am-5:11 pm

2 stops11h 56m

$435

ButteChicago

BTM - ORD

BTMORD

Butte Silver Bow Co

Wed 1/28

9:14 am-9:45 am

2 stops23h 31m

Chicago O'Hare Intl

Sat 1/31

3:59 pm-10:45 pm

1 stop7h 46m

$450

ButteChicago

BTM - ORD

BTMORD

Butte Silver Bow Co

Sat 1/17

9:14 am-6:46 pm

1 stop8h 32m

Chicago O'Hare Intl

Sat 1/24

3:59 pm-10:45 pm

1 stop7h 46m

$450

ButteChicago

BTM - ORD

BTMORD

Butte Silver Bow Co

Thu 1/29

9:14 am-6:46 pm

1 stop8h 32m

Chicago O'Hare Intl

Sun 2/1

1:55 pm-10:45 pm

1 stop9h 50m

$453

ButteSt. Louis

BTM - STL

BTMSTL

Butte Silver Bow Co

Tue 1/20

9:14 am-11:59 pm

2 stops13h 45m

Lambert-St Louis

Sat 1/24

4:15 pm-10:45 pm

1 stop7h 30m

$459

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/6

Showing 1-10 of 27 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 55m. Your travel time can differ by up to 9h 02m. 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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