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Billings

$150+ 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 7/14. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BIL
Jun 23 — Jun 301
Mon 6/23
Mon 6/30
1 adult, Economy
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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 June 18, 2025.

Round-trip from

$191
(American Airlines)

One-way from

$150
(Mytrip)

Popular in

September

Cheapest in

May

Average price

$393

Good round-trip deal

$360 or less

Good one-way deal

$283 or less
From Illinois to Billings Logan Intl
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One-way flight from Illinois to Billings Logan Intl
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Highest demand for flights based on searches. 20% potential increase in price ($124 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Price to beat on a round-trip flight from Illinois to Billings Logan Intl.
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Price to beat on a one-way flight from Illinois to Billings Logan Intl.
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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 June 18, 2025.

This American Airlines deal was found by Cheapflights users on 6/17. 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.
Sun 8/108:46 pmORD - BIL
Nonstop3h 14mAmerican Airlines
Fri 8/155:49 amBIL - ORD
Nonstop2h 50mAmerican Airlines
Deal found 6/17$191
This United Airlines deal was found by Cheapflights users on 6/17. 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 8/105:00 amORD - BIL
1 stop5h 38mUnited Airlines
Fri 8/155:55 pmBIL - ORD
1 stop5h 35mUnited Airlines
Deal found 6/17$211
This Delta deal was found by Cheapflights users on 6/17. 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 8/57:20 pmORD - BIL
1 stop5h 47mDelta
Tue 8/125:25 amBIL - ORD
1 stop5h 33mDelta
Deal found 6/17$248
This Delta deal was found by Cheapflights users on 6/17. 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 7/31:09 pmMDW - BIL
2 stops11h 03mDelta
Wed 7/166:20 amBIL - MDW
1 stop5h 46mDelta
Deal found 6/17$258
This Mytrip deal was found by Cheapflights users on 6/17. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/13:18 pmORD - BIL
1 stop7h 18mMultiple Airlines
Fri 8/810:26 pmBIL - ORD
1 stop14h 47mMultiple Airlines
Deal found 6/17$272
This Delta deal was found by Cheapflights users on 6/16. 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 7/75:37 pmSTL - BIL
1 stop6h 33mDelta
Tue 7/155:20 amBIL - STL
1 stop7h 06mDelta
Deal found 6/16$323
This Alaska Airlines deal was found by Cheapflights users on 6/17. 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 10/292:00 pmORD - BIL
2 stops11h 07mAlaska Airlines
Mon 11/37:22 pmBIL - ORD
1 stop25h 17mAlaska Airlines
Deal found 6/17$350
This American Airlines deal was found by Cheapflights users on 6/16. 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 8/15:27 pmSTL - BIL
1 stop5h 44mAmerican Airlines
Wed 8/65:49 amBIL - STL
1 stop11h 34mAmerican Airlines
Deal found 6/16$366
This Hawaiian Airlines deal was found by Cheapflights users on 6/16. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1310:00 amORD - BIL
1 stop9h 42mHawaiian Airlines
Tue 11/182:00 pmBIL - ORD
1 stop8h 59mHawaiian Airlines
Deal found 6/16$369
This American Airlines deal was found by Cheapflights users on 6/16. 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.
Wed 8/610:07 amPIA - BIL
1 stop13h 53mAmerican Airlines
Wed 8/135:49 amBIL - PIA
1 stop15h 06mAmerican Airlines
Deal found 6/16$378
This United Airlines deal was found by Cheapflights users on 6/16. 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 7/65:15 amSTL - BIL
1 stop5h 23mUnited Airlines
Tue 7/155:55 pmBIL - STL
1 stop5h 04mUnited Airlines
Deal found 6/16$442
This United Airlines deal was found by Cheapflights users on 6/17. 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 7/235:25 pmPIA - BIL
2 stops28h 38mUnited Airlines
Tue 7/292:35 pmBIL - PIA
1 stop5h 21mUnited Airlines
Deal found 6/17$479

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 June 18, 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 8/10

8:46 pm-11:00 pm

Nonstop3h 14m

Billings Logan Intl

Fri 8/15

5:49 am-9:39 am

Nonstop2h 50m

$191

ChicagoBillings

ORD - BIL

ORDBIL

Chicago O'Hare Intl

Sun 8/10

5:00 am-9:38 am

1 stop5h 38m

Billings Logan Intl

Fri 8/15

5:55 pm-12:30 am

1 stop5h 35m

$211

ChicagoBillings

ORD - BIL

ORDBIL

Chicago O'Hare Intl

Tue 8/5

7:20 pm-12:07 am

1 stop5h 47m

Billings Logan Intl

Tue 8/12

5:25 am-11:58 am

1 stop5h 33m

$248

ChicagoBillings

MDW - BIL

MDWBIL

Chicago Midway

Thu 7/3

1:09 pm-11:12 pm

2 stops11h 03m

Billings Logan Intl

Wed 7/16

6:20 am-1:06 pm

1 stop5h 46m

$258

ChicagoBillings

ORD - BIL

ORDBIL

Chicago O'Hare Intl

Fri 8/1

3:18 pm-9:36 pm

1 stop7h 18m

Billings Logan Intl

Fri 8/8

10:26 pm-2:13 pm

1 stop14h 47m

$272

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Mon 7/7

5:37 pm-11:10 pm

1 stop6h 33m

Billings Logan Intl

Tue 7/15

5:20 am-1:26 pm

1 stop7h 06m

$323

ChicagoBillings

ORD - BIL

ORDBIL

Chicago O'Hare Intl

Wed 10/29

2:00 pm-12:07 am

2 stops11h 07m

Billings Logan Intl

Mon 11/3

7:22 pm-9:39 pm

1 stop25h 17m

$350

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Fri 8/1

5:27 pm-10:11 pm

1 stop5h 44m

Billings Logan Intl

Wed 8/6

5:49 am-6:23 pm

1 stop11h 34m

$366

ChicagoBillings

ORD - BIL

ORDBIL

Chicago O'Hare Intl

Thu 11/13

10:00 am-6:42 pm

1 stop9h 42m

Billings Logan Intl

Tue 11/18

2:00 pm-11:59 pm

1 stop8h 59m

$369

PeoriaBillings

PIA - BIL

PIABIL

Greater Peoria

Wed 8/6

10:07 am-11:00 pm

1 stop13h 53m

Billings Logan Intl

Wed 8/13

5:49 am-9:55 pm

1 stop15h 06m

$378

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/15

Showing 1-10 of 22 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 June 18, 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.

Weekly flight availability from Illinois to Billings

Explore weekly flight availability from Illinois to Billings. 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 June 18, 2025.

The most flights from USIL to BIL are scheduled on a Monday (4 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (2 on average).

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 June 18, 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
10,000 reviews

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,964 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.8
Good
2,507 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,810 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 $162 on Delta. Other airlines that offer cheap prices include Alaska Airlines from $209 and American Airlines from $225 one-way.

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

    While some choose either Greater Peoria - 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 (81%), Envoy Air (81%) or Qatar Airways (80%) 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 $364, our data shows the cheapest flight currently is $195. When looking at the most popular route, (Chicago O'Hare Intl - Billings Logan Intl), you can expect to pay $211 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, January 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 $513). 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 Illinois to Billings

See prices for flight routes from nearby airports that may be better suited for you.
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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 June 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$248Average$334FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$296Average$408FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$306Average$568FlexibilityNo cancel feeOn-time69%

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