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$132+ Cheap flights from Billings (BIL) 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 12/11. Fares are subject to change and may not be available on all flights or dates of travel.
BIL — ORD
oct. 11 — oct. 181
sáb. 10/11
sáb. 10/18
1 adult, Economy
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Cheap flight deals from Billings to Illinois

Keep the following information in mind while searching for Billings to Illinois flight deals. Data was last updated septiembre 11, 2025.

Round-trip from

$229
(American Airlines)

One-way from

$132
(Kiwi.com)

Popular in

November

Cheapest in

October

Average price

$443

Good round-trip deal

$371 or less

Good one-way deal

$219 or less
From Billings Logan Intl to Illinois
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One-way flight from Billings Logan Intl to Illinois
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Highest demand for flights based on searches. 21% potential increase in price ($115 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($24 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Billings Logan Intl to Illinois.
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Price to beat on a one-way flight from Billings Logan Intl to Illinois.
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Find flight deals from Billings to Illinois

Cheapest flights from Billings to Illinois
Explore the most affordable flight options available from Billings to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on septiembre 11, 2025.

This American Airlines deal was found by Cheapflights users on 9/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/2512:20 pmBIL - ORD
Nonstop2h 57mAmerican Airlines
mié. 10/299:40 amORD - BIL
Nonstop3h 10mAmerican Airlines
Deal found 9/10$229
This American Airlines deal was found by Cheapflights users on 9/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/212:19 pmBIL - ORD
Nonstop2h 54mAmerican Airlines
dom. 10/58:39 pmORD - BIL
Nonstop3h 00mAmerican Airlines
Deal found 9/9$252
This Delta deal was found by Cheapflights users on 9/11. 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.
sáb. 10/256:25 amBIL - ORD
1 stop4h 03mDelta
mié. 10/291:25 pmORD - BIL
2 stops10h 00mDelta
Deal found 9/11$254
This United Airlines deal was found by Cheapflights users on 9/9. 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.
mié. 9/2412:00 pmBIL - ORD
Nonstop3h 00mUnited Airlines
dom. 9/288:55 amORD - BIL
Nonstop3h 21mUnited Airlines
Deal found 9/9$259
This Kiwi.com deal was found by Cheapflights users on 9/9. 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.
jue. 10/29:35 pmBIL - ORD
1 stop22h 24mMultiple Airlines
dom. 10/51:03 pmORD - BIL
1 stop21h 09mMultiple Airlines
Deal found 9/9$286
This American Airlines deal was found by Cheapflights users on 9/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/266:00 amBIL - ORD
Nonstop2h 53mAmerican Airlines
mar. 9/309:40 amORD - BIL
Nonstop3h 09mAmerican Airlines
Deal found 9/11$294
This Delta deal was found by Cheapflights users on 9/11. 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.
sáb. 10/256:25 amBIL - MDW
1 stop5h 43mDelta
mié. 10/291:08 pmMDW - BIL
2 stops10h 17mDelta
Deal found 9/11$299
This Delta deal was found by Cheapflights users on 9/9. 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.
dom. 10/56:25 amBIL - MDW
1 stop5h 38mDelta
mar. 10/77:10 pmMDW - BIL
1 stop5h 08mDelta
Deal found 9/9$331
This Delta deal was found by Cheapflights users on 9/11. 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.
sáb. 11/226:25 amBIL - MDW
1 stop5h 42mDelta
lun. 11/247:02 pmMDW - BIL
1 stop5h 17mDelta
Deal found 9/11$339
This United Airlines deal was found by Cheapflights users on 9/9. 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.
sáb. 10/42:30 pmBIL - MLI
1 stop5h 24mUnited Airlines
mar. 10/79:00 amMLI - BIL
1 stop5h 18mUnited Airlines
Deal found 9/9$356
This Delta deal was found by Cheapflights users on 9/11. 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.
sáb. 11/86:25 amBIL - MDW
1 stop5h 43mDelta
lun. 11/107:02 pmMDW - BIL
1 stop5h 17mDelta
Deal found 9/11$364
This American Airlines deal was found by Cheapflights users on 9/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/412:19 pmBIL - MLI
1 stop7h 06mAmerican Airlines
mar. 10/76:00 amMLI - BIL
1 stop6h 50mAmerican Airlines
Deal found 9/10$369

Cheapflights Fare Finder

 
Customize your flight search to find flights from Billings 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 septiembre 11, 2025.
Use the filters below to find and compare flights from Billings to Illinois that are best for you.

Fly from

Billings

Fly to

Illinois

Route

Depart

Return

Price

BillingsChicago

BIL - ORD

BILORD

Billings Logan Intl

sáb. 10/25

12:20 pm-4:17 pm

Nonstop2h 57m

Chicago O'Hare Intl

mié. 10/29

9:40 am-11:50 am

Nonstop3h 10m

$229

BillingsChicago

BIL - ORD

BILORD

Billings Logan Intl

mié. 9/24

12:00 pm-4:00 pm

Nonstop3h 00m

Chicago O'Hare Intl

dom. 9/28

8:55 am-11:16 am

Nonstop3h 21m

$259

BillingsChicago

BIL - ORD

BILORD

Billings Logan Intl

sáb. 10/25

5:25 am-4:50 pm

2 stops10h 25m

Chicago O'Hare Intl

mié. 10/29

1:25 pm-10:25 pm

2 stops10h 00m

$259

BillingsChicago

BIL - ORD

BILORD

Billings Logan Intl

jue. 2/26

5:40 am-12:26 pm

1 stop5h 46m

Chicago O'Hare Intl

lun. 3/2

7:00 pm-10:50 pm

1 stop4h 50m

$279

BillingsChicago

BIL - MDW

BILMDW

Billings Logan Intl

jue. 2/26

6:15 am-6:34 pm

2 stops11h 19m

Chicago Midway

lun. 3/2

6:45 pm-10:50 pm

1 stop5h 05m

$284

BillingsChicago

BIL - MDW

BILMDW

Billings Logan Intl

sáb. 10/25

6:25 am-1:08 pm

1 stop5h 43m

Chicago Midway

mié. 10/29

1:08 pm-10:25 pm

2 stops10h 17m

$299

BillingsChicago

BIL - ORD

BILORD

Billings Logan Intl

sáb. 11/22

6:25 am-11:35 am

1 stop4h 10m

Chicago O'Hare Intl

lun. 11/24

2:30 pm-11:19 pm

2 stops9h 49m

$299

BillingsChicago

BIL - ORD

BILORD

Billings Logan Intl

sáb. 10/4

6:00 am-9:53 am

Nonstop2h 53m

Chicago O'Hare Intl

dom. 10/12

9:40 am-11:50 am

Nonstop3h 10m

$300

BillingsChicago

BIL - MDW

BILMDW

Billings Logan Intl

dom. 10/5

6:25 am-1:03 pm

1 stop5h 38m

Chicago Midway

mar. 10/7

7:10 pm-11:18 pm

1 stop5h 08m

$331

BillingsChicago

BIL - MDW

BILMDW

Billings Logan Intl

sáb. 11/22

6:25 am-1:07 pm

1 stop5h 42m

Chicago Midway

lun. 11/24

7:02 pm-11:19 pm

1 stop5h 17m

$339

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 42 results
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Best time to book a flight from Billings to Illinois

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

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

Currently, August is the cheapest month in which you can book a flight from Billings to Illinois (average of $245). Flying from Billings to Illinois in March is currently the most expensive (average of $321). 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.

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

Find hourly flight availability from Billings to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated septiembre 11, 2025.

When flying from Billings to Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Billings to Illinois

Explore weekly flight availability from Billings to Illinois. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated septiembre 11, 2025.

The most flights from BIL to USIL are scheduled on a Monday (4 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (4 on average).

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated septiembre 11, 2025.
See what other customers who have flown with Delta, United Airlines, and American Airlines from Billings to Illinois have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,960 reviews

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,960 reviews
Delta
8.0
Very good
7,960 reviews

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,937 reviews
Delta
8.0
Very good
7,960 reviews

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,960 reviews

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

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

    Billings Logan Intl (BIL) is the airport you will fly out of if you book a flight from Billings to Illinois. It is only a 2.7 mi journey to Billings Logan Intl (BIL) from Billings’s city center.

  • How long is the flight from Billings to Illinois?

    Airlines like American Airlines, United Airlines, and Delta fly from Billings to Illinois in about 2h 57m. The time it takes to get you to your destination can typically vary by up to 7h 28m. The distance from Billings to Illinois is about 1057 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Billings to Illinois one-way?

    The cheapest airline one-way is American Airlines, with whom users have recently found tickets for as low as $167. However, be on the lookout for offers from United Airlines and Delta, as they are both options that can get you from Billings to Illinois for a low price.

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

    Most travelers choose Billings Logan Intl - Chicago O'Hare Intl, Billings Logan Intl - Chicago Midway or Billings Logan Intl - Evansville Dress Regional when deciding on the best route from Billings to Illinois.

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

    The top 3 most reliable airlines when flying from Billings to Illinois are American Airlines (75%), Envoy Air (75%) and SkyWest Airlines (75%).

  • What are the cheapest flights from Billings to Illinois?

    The cheapest flight price from Billings to Illinois is $175. On average you can expect to pay $398. The most popular route, (Billings Logan Intl - Chicago O'Hare Intl), can usually be booked for $261.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Billings to Illinois (average of $245). Flying from Billings to Illinois in March is currently the most expensive (average of $321). 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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Alternative routes for Billings to Illinois

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Top 3 airlines flying from Billings to Illinois

Discover the top 3 airlines that operate flights from Billings to Illinois. 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 septiembre 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$225Average$385FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$239Average$542FlexibilityNo cancel feeOn-time69%
DeltaCheapest$314Average$380FlexibilityNo cancel feeOn-timeN/A

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