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Billings

$97+ Cheap flights from Illinois to Billings (BIL)

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 11/27. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BIL
Nov 28 — Dec 51
Fri 11/28
Fri 12/5
1 adult, Economy
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Find flight deals from Illinois to Billings

Cheapest flights from Illinois to Billings
Explore the most affordable flight options available from Illinois to Billings. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 29, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/49:53 pmORD - BIL
1 stop14h 35mMultiple Airlines
Thu 12/1110:24 pmBIL - ORD
1 stop12h 18mMultiple Airlines
Deal found 10/27$219
This Kiwi.com deal was found by Cheapflights users on 10/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/812:59 pmORD - BIL
1 stop23h 13mMultiple Airlines
Thu 12/1110:24 pmBIL - ORD
1 stop12h 18mMultiple Airlines
Deal found 10/27$298
This Delta deal was found by Cheapflights users on 10/27. 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 12/312:50 pmMDW - BIL
2 stops11h 58mDelta
Wed 12/106:25 amBIL - MDW
1 stop5h 45mDelta
Deal found 10/27$320
This Delta deal was found by Cheapflights users on 10/27. 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 12/31:13 pmORD - BIL
2 stops11h 35mDelta
Wed 12/1011:47 amBIL - ORD
1 stop5h 58mDelta
Deal found 10/27$320
This Delta deal was found by Cheapflights users on 10/27. 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 12/49:34 amMDW - BIL
2 stops9h 08mDelta
Thu 12/116:25 amBIL - MDW
1 stop5h 45mDelta
Deal found 10/27$330
This Kiwi.com deal was found by Cheapflights users on 10/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/411:44 amORD - BIL
2 stops22h 28mMultiple Airlines
Sun 12/710:24 pmBIL - ORD
1 stop12h 18mMultiple Airlines
Deal found 10/29$331
This Delta deal was found by Cheapflights users on 10/28. 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 11/267:47 pmSTL - BIL
1 stop5h 23mDelta
Wed 12/311:47 amBIL - STL
1 stop6h 23mDelta
Deal found 10/28$333
This Delta deal was found by Cheapflights users on 10/27. 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 12/48:55 amORD - BIL
2 stops9h 47mDelta
Thu 12/1111:47 amBIL - ORD
2 stops11h 14mDelta
Deal found 10/27$335
This Delta deal was found by Cheapflights users on 10/29. 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 12/68:50 amORD - BIL
2 stops9h 52mDelta
Thu 12/116:25 amBIL - ORD
1 stop7h 34mDelta
Deal found 10/29$336
This Kiwi.com deal was found by Cheapflights users on 10/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/19:54 pmSTL - BIL
2 stops44h 30mMultiple Airlines
Thu 12/251:18 pmBIL - STL
1 stop29h 29mMultiple Airlines
Deal found 10/27$340
This Alaska Airlines deal was found by Cheapflights users on 10/27. 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.
Wed 12/310:00 amORD - BIL
1 stop15h 08mAlaska Airlines
Wed 12/102:02 pmBIL - ORD
1 stop7h 28mAlaska Airlines
Deal found 10/27$348
This United Airlines deal was found by Cheapflights users on 10/27. 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 11/259:00 amSTL - BIL
1 stop5h 23mUnited Airlines
Tue 12/22:40 pmBIL - STL
1 stop5h 17mUnited Airlines
Deal found 10/27$352

Cheap flight deals from Illinois to Billings

Keep the following information in mind while searching for Illinois to Billings flight deals. Data was last updated October 29, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$219
(Kiwi.com)

One-way from

$97
(Kiwi.com)

Popular in

March

Cheapest in

August

Average price

$300

Good round-trip deal

$254 or less
Provider with most accurate pricing for Chicago (CHI)-Billings Logan Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Billings Logan Intl flights.
Search Deals
From Illinois to Billings Logan Intl
Search Deals
One-way flight from Illinois to Billings Logan Intl
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($62 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($21 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals
Price to beat on a round-trip flight from Illinois to Billings Logan Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Billings 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 October 29, 2025.
Use the filters below to find and compare flights from Illinois to Billings that are best for you.

Fly from

Illinois

Fly to

Billings

Route

Depart

Return

Price

ChicagoBillings

ORD - BIL

ORDBIL

Chicago O'Hare Intl

Thu 12/4

3:47 pm-11:28 am

2 stops20h 41m

Billings Logan Intl

Thu 12/11

10:24 pm-11:42 am

1 stop12h 18m

$236

ChicagoBillings

ORD - BIL

ORDBIL

Chicago O'Hare Intl

Mon 12/8

12:59 pm-11:12 am

1 stop23h 13m

Billings Logan Intl

Thu 12/11

10:24 pm-11:42 am

1 stop12h 18m

$298

ChicagoBillings

ORD - BIL

ORDBIL

Chicago O'Hare Intl

Wed 12/3

1:13 pm-11:48 pm

2 stops11h 35m

Billings Logan Intl

Wed 12/10

11:47 am-6:45 pm

1 stop5h 58m

$320

ChicagoBillings

MDW - BIL

MDWBIL

Chicago Midway

Wed 12/3

12:50 pm-11:48 pm

2 stops11h 58m

Billings Logan Intl

Wed 12/10

6:25 am-1:10 pm

1 stop5h 45m

$320

ChicagoBillings

MDW - BIL

MDWBIL

Chicago Midway

Thu 12/4

9:34 am-5:42 pm

2 stops9h 08m

Billings Logan Intl

Thu 12/11

6:25 am-1:10 pm

1 stop5h 45m

$330

ChicagoBillings

ORD - BIL

ORDBIL

Chicago O'Hare Intl

Thu 12/4

11:44 am-9:12 am

2 stops22h 28m

Billings Logan Intl

Sun 12/7

10:24 pm-11:42 am

1 stop12h 18m

$331

ChicagoBillings

ORD - BIL

ORDBIL

Chicago O'Hare Intl

Sat 12/6

5:42 pm-11:48 pm

1 stop7h 06m

Billings Logan Intl

Thu 12/11

6:25 am-2:59 pm

1 stop7h 34m

$331

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Sat 12/13

9:00 am-3:26 pm

1 stop7h 26m

Billings Logan Intl

Thu 12/25

6:35 am-1:20 pm

1 stop5h 45m

$333

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Wed 11/26

7:47 pm-12:10 am

1 stop5h 23m

Billings Logan Intl

Wed 12/3

6:22 pm-1:01 am

1 stop5h 39m

$333

ChicagoBillings

ORD - BIL

ORDBIL

Chicago O'Hare Intl

Thu 12/4

8:55 am-5:42 pm

2 stops9h 47m

Billings Logan Intl

Thu 12/11

11:47 am-12:01 am

2 stops11h 14m

$335

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

Showing 1-10 of 46 results
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Best time to book a flight from Illinois to Billings

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

What is the cheapest time of day to fly from IL to BIL?

Find hourly flight availability from Illinois to Billings. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 29, 2025.

It’s typically best to fly out from Illinois to Billings in the evening. Doing so could potentially save you 38% on the flight price compared to flying in the afternoon, which is usually more expensive.

Related info for your journey

Find useful and relevant information for your journey from Illinois to Billings. 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 into for flights to Billings from Illinois?

    Located just 2.7 mi from the city center, Billings Logan Intl (BIL) is the airport most travelers will use when flying to Billings from Illinois.

  • How long is the flight from Illinois to Billings?

    Departing from Illinois to Billings will take you 5h 59m. Illinois and Billings are separated by a distance of 1010 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    While some choose either Lambert-St Louis - Billings Logan Intl or Chicago Midway - Billings Logan Intl, Chicago O'Hare Intl - Billings Logan Intl is the most popular route from Illinois to Billings.

  • What are the most reliable airlines from Illinois to Billings?

    Consider American Airlines (88%), Envoy Air (88%) or SkyWest Airlines (87%) when booking your flight. These represent the most reliable airlines when flying from Illinois to Billings.

  • What are the cheapest flights from Illinois to Billings?

    While on average a flight from Illinois to Billings is generally $371, our data shows the cheapest flight currently is $244. When looking at the most popular route, (Chicago O'Hare Intl - Billings Logan Intl), you can expect to pay $219 for that flight.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Illinois to Billings by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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Top 2 airlines flying from Illinois to Billings

Discover the top 2 airlines that operate flights from Illinois to Billings. 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 October 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$225Average$419FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$269Average$535FlexibilityNo cancel feeOn-time69%

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