HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Billings

$149+ 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 6/14. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BIL
Apr 2 — Apr 91
Wed 4/2
Wed 4/9
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Illinois to Billings with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 March 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$239
(United Airlines)

One-way from

$149
(American Airlines)

Popular in

March

Cheapest in

February

Average price

$717

Good round-trip deal

$390 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
High demand for flights, 8% potential price rise
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2025
Search Deals
Price to beat on a round-trip flight from Illinois to Billings Logan Intl.
Search Deals

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 March 28, 2025.

This United Airlines deal was found by Cheapflights users on 3/27. 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.
Sun 6/155:02 amORD - BIL
1 stop5h 35mUnited Airlines
Tue 7/1512:50 pmBIL - ORD
Nonstop2h 55mUnited Airlines
Deal found 3/27$239
This American Airlines deal was found by Cheapflights users on 3/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/199:40 amORD - BIL
Nonstop3h 11mAmerican Airlines
Wed 9/2412:23 pmBIL - ORD
Nonstop2h 47mAmerican Airlines
Deal found 3/27$289
This American Airlines deal was found by Cheapflights users on 3/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/107:20 amSTL - BIL
1 stop5h 41mAmerican Airlines
Tue 6/172:00 pmBIL - STL
1 stop5h 59mAmerican Airlines
Deal found 3/27$313
This Delta deal was found by Cheapflights users on 3/27. 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.
Tue 6/102:00 pmORD - BIL
2 stops10h 03mDelta
Tue 6/175:30 amBIL - ORD
1 stop5h 23mDelta
Deal found 3/27$314
This Delta deal was found by Cheapflights users on 3/27. 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.
Tue 6/102:15 pmSTL - BIL
2 stops9h 48mDelta
Tue 6/176:27 pmBIL - STL
1 stop5h 09mDelta
Deal found 3/27$332
This Trip.com deal was found by Cheapflights users on 3/27. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/36:00 amORD - BIL
1 stop7h 49mHawaiian Airlines
Sat 5/173:45 pmBIL - ORD
1 stop7h 11mHawaiian Airlines
Deal found 3/27$337
This Alaska Airlines deal was found by Cheapflights users on 3/27. 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.
Sat 5/39:00 amORD - BIL
1 stop15h 59mAlaska Airlines
Sat 5/177:24 pmBIL - ORD
1 stop9h 16mAlaska Airlines
Deal found 3/27$346
This Delta deal was found by Cheapflights users on 3/27. 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.
Mon 6/97:25 pmMDW - BIL
1 stop4h 38mDelta
Tue 6/176:26 amBIL - MDW
1 stop5h 51mDelta
Deal found 3/27$374
This United Airlines deal was found by Cheapflights users on 3/27. 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.
Fri 8/89:00 amPIA - BIL
1 stop7h 24mUnited Airlines
Mon 8/1112:50 pmBIL - PIA
1 stop7h 42mUnited Airlines
Deal found 3/27$389
This United Airlines deal was found by Cheapflights users on 3/27. 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.
Fri 6/134:32 pmSTL - BIL
1 stop7h 15mUnited Airlines
Fri 6/2012:30 pmBIL - STL
1 stop7h 45mUnited Airlines
Deal found 3/27$411
This American Airlines deal was found by Cheapflights users on 3/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/246:31 pmMLI - BIL
1 stop5h 25mAmerican Airlines
Fri 7/412:23 pmBIL - MLI
1 stop4h 39mAmerican Airlines
Deal found 3/27$429
This United Airlines deal was found by Cheapflights users on 3/27. 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.
Mon 6/235:35 pmMLI - BIL
2 stops17h 02mUnited Airlines
Tue 7/812:50 pmBIL - MLI
1 stop7h 47mUnited Airlines
Deal found 3/27$468

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 March 28, 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

Sun 6/15

5:02 am-9:37 am

1 stop5h 35m

Billings Logan Intl

Tue 7/15

12:50 pm-4:45 pm

Nonstop2h 55m

$239

ChicagoBillings

ORD - BIL

ORDBIL

Chicago O'Hare Intl

Wed 6/11

8:35 pm-10:56 pm

Nonstop3h 21m

Billings Logan Intl

Wed 6/18

12:35 pm-4:22 pm

Nonstop2h 47m

$300

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Tue 6/10

7:20 am-12:01 pm

1 stop5h 41m

Billings Logan Intl

Tue 6/17

2:00 pm-8:59 pm

1 stop5h 59m

$313

ChicagoBillings

ORD - BIL

ORDBIL

Chicago O'Hare Intl

Tue 6/10

2:00 pm-11:03 pm

2 stops10h 03m

Billings Logan Intl

Tue 6/17

5:30 am-11:53 am

1 stop5h 23m

$314

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Tue 6/10

2:15 pm-11:03 pm

2 stops9h 48m

Billings Logan Intl

Tue 6/17

6:27 pm-12:36 am

1 stop5h 09m

$332

ChicagoBillings

ORD - BIL

ORDBIL

Chicago O'Hare Intl

Sat 5/3

6:00 am-12:49 pm

1 stop7h 49m

Billings Logan Intl

Sat 5/17

3:45 pm-11:56 pm

1 stop7h 11m

$337

ChicagoBillings

ORD - BIL

ORDBIL

Chicago O'Hare Intl

Sat 5/3

9:00 am-11:59 pm

1 stop15h 59m

Billings Logan Intl

Sat 5/17

7:24 pm-5:40 am

1 stop9h 16m

$346

ChicagoBillings

MDW - BIL

MDWBIL

Chicago Midway

Mon 6/9

7:25 pm-11:03 pm

1 stop4h 38m

Billings Logan Intl

Tue 6/17

6:26 am-1:17 pm

1 stop5h 51m

$374

PeoriaBillings

PIA - BIL

PIABIL

Greater Peoria

Fri 8/8

9:00 am-3:24 pm

1 stop7h 24m

Billings Logan Intl

Mon 8/11

12:50 pm-9:32 pm

1 stop7h 42m

$389

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Fri 6/13

4:32 pm-10:47 pm

1 stop7h 15m

Billings Logan Intl

Fri 6/20

12:30 pm-9:15 pm

1 stop7h 45m

$411

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Showing 1-10 of 21 results
1
2
3

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 March 28, 2025.

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

Rainfall in Billings by month

Plan your trip to Billings by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Billings ranges from 0.5 - 2.2 inches per month. May is typically the wettest month, when rainfall can reach 2.2 in. January is typically the driest time to visit Billings when rainfall is around 0.5 in.

Temperature in Billings by month

Plan your trip to Billings by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Billings, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 26.6 F).

Reviews of airlines servicing Billings

Get insights into the airlines that provide service to Billings. 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 Billings. Reviews last updated March 28, 2025.
See what other customers who have flown with Alaska Airlines, Delta and Hawaiian Airlines from Illinois to Billings 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.
Alaska Airlines
8.0
Very good
9,798 reviews

Comfort

7.9

Crew

8.5

Food

7.1

Entertainment

7.1

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
9,798 reviews
Alaska Airlines
8.0
Very good
9,798 reviews

Comfort

7.9

Crew

8.5

Food

7.1

Entertainment

7.1

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,897 reviews
Alaska Airlines
8.0
Very good
9,798 reviews

Comfort

7.9

Crew

8.5

Food

7.1

Entertainment

7.1

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Hawaiian Airlines
7.9
Good
2,336 reviews
Alaska Airlines
8.0
Very good
9,798 reviews

Comfort

7.9

Crew

8.5

Food

7.1

Entertainment

7.1

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,603 reviews
Alaska Airlines
8.0
Very good
9,798 reviews

Comfort

7.9

Crew

8.5

Food

7.1

Entertainment

7.1

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Allegiant Air
7.3
Good
731 reviews
Alaska Airlines
8.0
Very good
9,798 reviews

Comfort

7.9

Crew

8.5

Food

7.1

Entertainment

7.1

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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.

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

    One-way options have recently been found by users for as low as $149 on American Airlines. Other airlines that offer cheap prices include Delta from $159 and United Airlines from $199 one-way.

  • 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 cheapest flights from Illinois to Billings?

    While on average a flight from Illinois to Billings is generally $454, our data shows the cheapest flight currently is $257. When looking at the most popular route, (Chicago O'Hare Intl - Billings Logan Intl), you can expect to pay $299 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.

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

    Currently, February is the cheapest month in which you can book a flight from Illinois to Billings (average of $396). Flying from Illinois to Billings in June is currently the most expensive (average of $590). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Illinois to Billings

See prices for flight routes from nearby airports that may be better suited for you.
Newark to Bozeman flights
John F Kennedy Intl to Bozeman flights
O'Hare Intl to Kalispell flights
O'Hare Intl to Bozeman flights
LaGuardia to Bozeman flights
Minneapolis to Bozeman flights
Boston to Bozeman flights
Los Angeles to Kalispell flights
Dulles Intl to Bozeman flights
Los Angeles to Bozeman flights
San Francisco to Bozeman flights
Atlanta to Bozeman flights
San Francisco to Kalispell flights
Dallas/Fort Worth to Kalispell flights
Dallas/Fort Worth to Bozeman flights
Denver to Bozeman flights
Denver to Kalispell flights
John F Kennedy Intl to Kalispell flights
Newark to Kalispell flights
Minneapolis to Kalispell flights
Reagan-National to Bozeman flights
Baltimore to Bozeman flights
LaGuardia to Kalispell flights
Charlotte to Bozeman flights
O'Hare Intl to Missoula flights
Hobby to Bozeman flights
John F Kennedy Intl to Missoula flights
Philadelphia to Bozeman flights
Newark to Missoula flights
Seattle to Bozeman flights
Detroit to Kalispell flights
Raleigh to Bozeman flights
Cleveland to Bozeman flights
Dulles Intl to Kalispell flights
Minneapolis to Missoula flights
San Diego to Kalispell flights
Seattle to Kalispell flights
Dulles Intl to Missoula flights
Portland to Missoula flights
Midway to Bozeman flights
Portland to Bozeman flights
Seattle to Billings flights
Midway to Kalispell flights
Los Angeles to Missoula flights
Boston to Kalispell flights
Grand Rapids to Bozeman flights
Detroit to Bozeman flights
Austin to Kalispell flights
Hobby to Kalispell flights
LaGuardia to Missoula flights

Top 3 airlines flying from Illinois to Billings

Discover the top 3 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 March 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$248Average$334FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$288Average$573FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$334Average$594FlexibilityNo cancel feeOn-time71%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.