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$125+ Cheap flights from Baton Rouge (BTR) 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 12/24. Fares are subject to change and may not be available on all flights or dates of travel.
BTR — ORD
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheap flight deals from Baton Rouge to Illinois

Cheapest flights from Baton Rouge to Illinois
Explore the most affordable flight options available from Baton Rouge to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

This United Airlines deal was found by Cheapflights users on 12/9. 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.
Wed 12/245:10 amBTR - STL
1 stop4h 39mUnited Airlines
Sat 1/174:42 pmSTL - BTR
1 stop4h 50mUnited Airlines
Deal found 12/9$229
This American Airlines deal was found by Cheapflights users on 12/9. 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.
Wed 12/242:18 pmBTR - STL
1 stop5h 04mAmerican Airlines
Fri 1/911:55 amSTL - BTR
1 stop6h 09mAmerican Airlines
Deal found 12/9$249
This American Airlines deal was found by Cheapflights users on 12/9. 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.
Mon 12/295:53 pmBTR - STL
1 stop5h 03mAmerican Airlines
Fri 1/25:16 amSTL - BTR
1 stop4h 23mAmerican Airlines
Deal found 12/9$264
This United Airlines deal was found by Cheapflights users on 12/9. 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.
Wed 12/2412:11 pmBTR - STL
2 stops10h 32mUnited Airlines
Fri 1/96:00 amSTL - BTR
1 stop7h 17mUnited Airlines
Deal found 12/9$280
This United Airlines deal was found by Cheapflights users on 12/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/265:10 amBTR - STL
1 stop4h 39mUnited Airlines
Thu 1/16:00 amSTL - BTR
1 stop5h 25mUnited Airlines
Deal found 12/11$295
This Delta deal was found by Cheapflights users on 12/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/177:39 amBTR - MDW
1 stop4h 16mDelta
Thu 1/86:45 amMDW - BTR
1 stop6h 45mDelta
Deal found 12/10$304
This United Airlines deal was found by Cheapflights users on 12/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/185:10 amBTR - ORD
1 stop4h 58mUnited Airlines
Tue 1/67:35 amORD - BTR
1 stop5h 42mUnited Airlines
Deal found 12/11$304
This American Airlines deal was found by Cheapflights users on 12/9. 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.
Sat 12/136:33 pmBTR - STL
1 stop4h 14mAmerican Airlines
Wed 12/317:00 amSTL - BTR
1 stop6h 48mAmerican Airlines
Deal found 12/9$309
This Delta deal was found by Cheapflights users on 12/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/146:59 pmBTR - MDW
1 stop4h 48mDelta
Wed 1/75:31 pmMDW - BTR
1 stop4h 30mDelta
Deal found 12/10$319
This United Airlines deal was found by Cheapflights users on 12/9. 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.
Fri 12/191:48 pmBTR - ORD
1 stop7h 38mUnited Airlines
Sat 1/107:35 amORD - BTR
1 stop5h 42mUnited Airlines
Deal found 12/9$333
This Delta deal was found by Cheapflights users on 12/11. 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.
Thu 12/186:59 pmBTR - MDW
1 stop4h 48mDelta
Wed 1/75:31 pmMDW - BTR
1 stop4h 30mDelta
Deal found 12/11$334
This United Airlines deal was found by Cheapflights users on 12/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/266:07 pmBTR - ORD
1 stop6h 07mUnited Airlines
Tue 12/302:17 pmORD - BTR
1 stop5h 06mUnited Airlines
Deal found 12/11$334

Find flight deals from Baton Rouge to Illinois

Keep the following information in mind while searching for Baton Rouge to Illinois flight deals. Data was last updated December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$209
(Delta)

One-way from

$125
(Delta)

Popular in

October

Cheapest in

August

Average price

$361
Provider with most accurate pricing for Baton Rouge Ryan-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Baton Rouge Ryan-Chicago (CHI) flights.
Search Deals
From Baton Rouge Ryan to Illinois
Search Deals
One-way flight from Baton Rouge Ryan to Illinois
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($7 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Baton Rouge 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 December 12, 2025.
Use the filters below to find and compare flights from Baton Rouge to Illinois that are best for you.

Fly from

Baton Rouge

Fly to

Illinois

Route

Depart

Return

Price

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Thu 1/15

5:51 pm-11:39 pm

1 stop5h 48m

Lambert-St Louis

Sun 1/18

7:10 am-1:30 pm

1 stop6h 20m

$209

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Wed 12/24

5:10 am-9:49 am

1 stop4h 39m

Lambert-St Louis

Sat 1/17

4:42 pm-9:32 pm

1 stop4h 50m

$229

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Thu 1/1

6:07 am-12:24 pm

1 stop6h 17m

Lambert-St Louis

Sat 1/17

5:00 pm-10:01 pm

1 stop5h 01m

$229

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Wed 1/7

2:29 pm-7:29 pm

1 stop5h 00m

Lambert-St Louis

Wed 1/21

3:54 pm-8:59 pm

1 stop5h 05m

$249

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Tue 1/20

6:00 am-11:03 am

1 stop5h 03m

Lambert-St Louis

Tue 1/20

5:04 pm-10:56 pm

1 stop5h 52m

$249

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Wed 1/7

3:30 pm-10:00 pm

1 stop6h 30m

Lambert-St Louis

Thu 1/22

6:00 am-1:17 pm

1 stop7h 17m

$249

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Wed 1/7

5:15 pm-10:00 pm

1 stop4h 45m

Lambert-St Louis

Wed 1/21

6:30 am-3:58 pm

2 stops9h 28m

$254

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Mon 12/29

5:53 pm-10:56 pm

1 stop5h 03m

Lambert-St Louis

Fri 1/2

5:16 am-9:39 am

1 stop4h 23m

$264

Baton RougeChicago

BTR - ORD

BTRORD

Baton Rouge Ryan

Tue 12/23

10:34 am-4:19 pm

1 stop5h 45m

Chicago O'Hare Intl

Fri 1/2

5:29 pm-9:53 pm

1 stop4h 24m

$304

Baton RougeChicago

BTR - ORD

BTRORD

Baton Rouge Ryan

Thu 12/18

5:10 am-10:08 am

1 stop4h 58m

Chicago O'Hare Intl

Tue 1/6

7:35 am-1:17 pm

1 stop5h 42m

$304

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/9

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

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

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

Currently, February is the cheapest month in which you can book a flight from Baton Rouge to Illinois (average of $57). Flying from Baton Rouge to Illinois in January is currently the most expensive (average of $174). 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 BTR to IL?

Find hourly flight availability from Baton Rouge 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 December 12, 2025.

A simple way to save on the total cost of your ticket is to fly from Baton Rouge to Illinois in the evening. If you’re flexible enough to do this you can expect to save up to 45% on your trip compared to booking a flight in the morning.

How much does it cost to fly round-trip from Baton Rouge to Illinois?

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 December 12, 2025.
See what other customers who have flown with Delta, United Airlines, and American Airlines from Baton Rouge 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
7.9
Good
8,007 reviews

Food

7.3

Boarding

8.1

Entertainment

7.9

Overall

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,007 reviews
Delta
7.9
Good
8,007 reviews

Food

7.3

Boarding

8.1

Entertainment

7.9

Overall

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,095 reviews
Delta
7.9
Good
8,007 reviews

Food

7.3

Boarding

8.1

Entertainment

7.9

Overall

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,050 reviews
Delta
7.9
Good
8,007 reviews

Food

7.3

Boarding

8.1

Entertainment

7.9

Overall

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

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

    If you book a flight to Illinois from Baton Rouge, you will be flying from Ryan, which is the city’s only airport. Baton Rouge Ryan (BTR) is located 5.8 mi from the center of Baton Rouge.

  • How long is the flight from Baton Rouge to Illinois?

    There are many flights that can get you from Baton Rouge to Illinois in 4h 39m. Fly via Delta, United Airlines, or American Airlines to get the fastest option. The distance from Baton Rouge to Illinois is about 569 mi. This flight may include one or multiple stops.

  • What are the most popular routes from Baton Rouge to Illinois?

    The most popular flight routes from Baton Rouge to Illinois are Baton Rouge Ryan - Lambert-St Louis, Baton Rouge Ryan - Chicago O'Hare Intl and Baton Rouge Ryan - Chicago Midway.

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

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

  • How can I find direct flights from Baton Rouge to Illinois?

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

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

    Yes. Cheapflights offers flight deals from Baton Rouge 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 Baton Rouge to Illinois?

    Currently, February is the cheapest month in which you can book a flight from Baton Rouge to Illinois (average of $57). Flying from Baton Rouge to Illinois in January is currently the most expensive (average of $174). 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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Top 3 airlines flying from Baton Rouge to Illinois

Discover the top 3 airlines that operate flights from Baton Rouge 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 December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$248Average$391FlexibilityNo cancel feeOn-time71%
DeltaCheapest$248Average$343FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$272Average$378FlexibilityNo cancel feeOn-time69%

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