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$157+ 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 4/12. Fares are subject to change and may not be available on all flights or dates of travel.
BIL — ORD
mar. 23 — mar. 301
dom. 3/23
dom. 3/30
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 marzo 18, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$229
(American Airlines)

One-way from

$157
(American Airlines)

Popular in

December

Cheapest in

May

Average price

$346

Good round-trip deal

$458 or less

Good one-way deal

$237 or less
Provider with most accurate pricing for Billings Logan Intl-Chicago (CHI) flight deals.
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Provider most trusted by Cheapflights users for Billings Logan Intl-Chicago (CHI) flights.
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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. 24% potential increase in price ($165 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($20 potential savings vs. average RT price).
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Average for round-trip flights in March 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 marzo 18, 2025.

This American Airlines deal was found by Cheapflights users on 3/18. 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.
mar. 6/1012:35 pmBIL - ORD
Nonstop2h 47mAmerican Airlines
mar. 7/18:27 pmORD - BIL
Nonstop3h 21mAmerican Airlines
Deal found 3/18$229
This United Airlines deal was found by Cheapflights users on 3/18. 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.
jue. 5/2912:30 pmBIL - ORD
Nonstop2h 55mUnited Airlines
sáb. 5/315:02 amORD - BIL
1 stop5h 35mUnited Airlines
Deal found 3/18$239
This Delta deal was found by Cheapflights users on 3/17. 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.
sáb. 8/165:45 amBIL - ORD
1 stop5h 36mDelta
mié. 8/206:59 pmORD - BIL
1 stop6h 17mDelta
Deal found 3/17$249
This Delta deal was found by Cheapflights users on 3/18. 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.
mié. 4/95:20 amBIL - MDW
2 stops11h 42mDelta
mar. 4/157:00 pmMDW - BIL
1 stop5h 12mDelta
Deal found 3/18$254
This Delta deal was found by Cheapflights users on 3/17. 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.
mar. 4/85:20 amBIL - STL
1 stop6h 59mDelta
mar. 4/155:34 pmSTL - BIL
1 stop6h 38mDelta
Deal found 3/17$313
This United Airlines deal was found by Cheapflights users on 3/17. 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.
sáb. 4/510:50 amBIL - STL
1 stop4h 41mUnited Airlines
vie. 4/118:48 amSTL - BIL
1 stop5h 30mUnited Airlines
Deal found 3/17$387
This Alaska Airlines deal was found by Cheapflights users on 3/18. 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.
vie. 4/253:47 pmBIL - ORD
2 stops13h 18mAlaska Airlines
lun. 4/286:58 pmORD - BIL
2 stops21h 09mAlaska Airlines
Deal found 3/18$433
This American Airlines deal was found by Cheapflights users on 3/17. 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.
mié. 4/22:00 pmBIL - MLI
1 stop6h 20mAmerican Airlines
dom. 4/66:30 amMLI - BIL
1 stop7h 58mAmerican Airlines
Deal found 3/17$465
This United Airlines deal was found by Cheapflights users on 3/17. 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.
mié. 4/22:30 pmBIL - MLI
1 stop5h 33mUnited Airlines
dom. 4/65:25 pmMLI - BIL
2 stops28h 33mUnited Airlines
Deal found 3/17$473

Find flights from Billings to Illinois within your budget

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 marzo 18, 2025.

Fly from

Billings

Fly to

Illinois

Route

Depart

Return

Price

BillingsChicago

BIL - ORD

BILORD

Billings Logan Intl

mar. 6/10

12:35 pm-4:22 pm

Nonstop2h 47m

Chicago O'Hare Intl

mar. 7/1

8:27 pm-10:48 pm

Nonstop3h 21m

$229

BillingsChicago

BIL - ORD

BILORD

Billings Logan Intl

jue. 5/29

12:30 pm-4:25 pm

Nonstop2h 55m

Chicago O'Hare Intl

sáb. 5/31

5:02 am-9:37 am

1 stop5h 35m

$239

BillingsChicago

BIL - ORD

BILORD

Billings Logan Intl

sáb. 8/16

5:45 am-12:21 pm

1 stop5h 36m

Chicago O'Hare Intl

mié. 8/20

6:59 pm-12:16 am

1 stop6h 17m

$249

BillingsChicago

BIL - MDW

BILMDW

Billings Logan Intl

mié. 4/9

5:20 am-6:02 pm

2 stops11h 42m

Chicago Midway

mar. 4/15

7:00 pm-11:12 pm

1 stop5h 12m

$254

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

mar. 4/8

5:20 am-1:19 pm

1 stop6h 59m

Lambert-St Louis

mar. 4/15

5:34 pm-11:12 pm

1 stop6h 38m

$313

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

sáb. 4/5

10:50 am-4:31 pm

1 stop4h 41m

Lambert-St Louis

vie. 4/11

8:48 am-1:18 pm

1 stop5h 30m

$387

BillingsChicago

BIL - ORD

BILORD

Billings Logan Intl

vie. 4/25

3:47 pm-6:05 am

2 stops13h 18m

Chicago O'Hare Intl

lun. 4/28

6:58 pm-3:07 pm

2 stops21h 09m

$433

BillingsMoline

BIL - MLI

BILMLI

Billings Logan Intl

mié. 4/2

2:00 pm-9:20 pm

1 stop6h 20m

Moline Quad-City

dom. 4/6

6:30 am-1:28 pm

1 stop7h 58m

$465

BillingsMoline

BIL - MLI

BILMLI

Billings Logan Intl

mié. 4/2

2:30 pm-9:03 pm

1 stop5h 33m

Moline Quad-City

dom. 4/6

5:25 pm-8:58 pm

2 stops28h 33m

$473

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

sáb. 4/12

2:02 pm-10:28 pm

1 stop7h 26m

$157

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/16

Showing 1-10 of 16 results
1
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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.

Travel insights for flights from Billings to Illinois

Get recent, data-driven insights about flights from Billings to Illinois including ideal travel times, pricing trends, and more.

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 $326). 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 marzo 18, 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.

Rainfall in Illinois by month

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

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

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

If weather is an important factor for your trip to Illinois, 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 23.0 F).

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 marzo 18, 2025.
See what other customers who have flown with Alaska Airlines, Delta and United 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.
Alaska Airlines
8.0
Very good
9,753 reviews

Boarding

8.2

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.9

Entertainment

7.1

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
9,753 reviews
Alaska Airlines
8.0
Very good
9,753 reviews

Boarding

8.2

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.9

Entertainment

7.1

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
7,908 reviews
Alaska Airlines
8.0
Very good
9,753 reviews

Boarding

8.2

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.9

Entertainment

7.1

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
8,611 reviews
Alaska Airlines
8.0
Very good
9,753 reviews

Boarding

8.2

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.9

Entertainment

7.1

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
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,753 reviews

Boarding

8.2

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.9

Entertainment

7.1

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 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.

  • 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 $157. However, be on the lookout for offers from Alaska 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 - Lambert-St Louis when deciding on the best route from Billings to Illinois.

  • What are the cheapest flights from Billings to Illinois?

    The cheapest flight price from Billings to Illinois is $219. On average you can expect to pay $664. The most popular route, (Billings Logan Intl - Chicago O'Hare Intl), can usually be booked for $249.

  • 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 $326). 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.

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Alternative routes for Billings to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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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 marzo 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$314Average$353FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$439Average$640FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$518Average$670FlexibilityNo cancel feeOn-time69%
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