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$239+ 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 11/26. Fares are subject to change and may not be available on all flights or dates of travel.
BTR — ORD
Nov 28 — Dec 51
Fri 11/28
Fri 12/5
1 adult, Economy
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Cheap 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 October 29, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$249
(Delta)

One-way from

$239
(Delta)

Popular in

December

Cheapest in

August

Average price

$382
Provider with most accurate pricing for Baton Rouge Ryan-Chicago (CHI) flight deals.
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Provider most trusted by Cheapflights users for Baton Rouge Ryan-Chicago (CHI) flights.
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From Baton Rouge Ryan to Illinois
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One-way flight from Baton Rouge Ryan to Illinois
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Highest demand for flights based on searches. 2% potential increase in price ($7 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find 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 October 29, 2025.

This Delta deal was found by Cheapflights users on 10/28. 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 12/97:39 amBTR - MDW
1 stop4h 16mDelta
Sat 12/1311:05 amMDW - BTR
1 stop5h 21mDelta
Deal found 10/28$249
This Delta deal was found by Cheapflights users on 10/28. 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 12/910:32 amBTR - ORD
1 stop6h 13mDelta
Sat 12/134:20 pmORD - BTR
1 stop4h 52mDelta
Deal found 10/28$249
This Delta deal was found by Cheapflights users on 10/27. 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.
Sat 12/276:59 pmBTR - STL
1 stop4h 43mDelta
Mon 1/57:10 amSTL - BTR
1 stop6h 22mDelta
Deal found 10/27$249
This American Airlines deal was found by Cheapflights users on 10/28. 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 12/107:20 amBTR - STL
2 stops8h 09mAmerican Airlines
Wed 12/178:13 amSTL - BTR
1 stop5h 41mAmerican Airlines
Deal found 10/28$254
This United Airlines deal was found by Cheapflights users on 10/27. 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.
Tue 11/113:56 pmBTR - ORD
1 stop5h 21mUnited Airlines
Sat 11/156:00 amORD - BTR
1 stop5h 23mUnited Airlines
Deal found 10/27$259
This Delta deal was found by Cheapflights users on 10/28. 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 11/127:39 amBTR - STL
1 stop5h 21mDelta
Sun 11/161:55 pmSTL - BTR
1 stop6h 02mDelta
Deal found 10/28$259
This American Airlines deal was found by Cheapflights users on 10/29. 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 11/246:33 pmBTR - ORD
1 stop5h 14mAmerican Airlines
Fri 11/285:00 amORD - BTR
1 stop7h 29mAmerican Airlines
Deal found 10/29$269
This Delta deal was found by Cheapflights users on 10/28. 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 11/197:39 amBTR - MDW
1 stop4h 13mDelta
Sat 11/224:28 pmMDW - BTR
1 stop5h 24mDelta
Deal found 10/28$274
This Delta deal was found by Cheapflights users on 10/28. 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 11/266:55 pmBTR - ORD
1 stop5h 07mDelta
Sat 11/295:23 amORD - BTR
1 stop4h 27mDelta
Deal found 10/28$274
This United Airlines deal was found by Cheapflights users on 10/29. 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 11/145:07 amBTR - PIA
2 stops7h 32mUnited Airlines
Wed 11/191:20 pmPIA - BTR
2 stops9h 24mUnited Airlines
Deal found 10/29$274
This Delta deal was found by Cheapflights users on 10/27. 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.
Thu 12/256:07 amBTR - STL
1 stop6h 17mDelta
Mon 1/57:10 amSTL - BTR
1 stop6h 22mDelta
Deal found 10/27$274
This Delta deal was found by Cheapflights users on 10/27. 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 11/117:39 amBTR - MDW
1 stop4h 13mDelta
Sat 11/1510:47 amMDW - BTR
1 stop5h 37mDelta
Deal found 10/27$279

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 October 29, 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 RougeChicago

BTR - MDW

BTRMDW

Baton Rouge Ryan

Fri 1/23

6:18 am-12:01 pm

1 stop5h 43m

Chicago Midway

Sun 1/25

6:00 am-12:50 pm

1 stop6h 50m

$249

Baton RougeChicago

BTR - ORD

BTRORD

Baton Rouge Ryan

Mon 1/19

5:15 pm-12:28 am

1 stop7h 13m

Chicago O'Hare Intl

Sun 1/25

5:40 am-11:25 am

1 stop5h 45m

$249

Baton RougeChicago

BTR - MDW

BTRMDW

Baton Rouge Ryan

Tue 12/9

7:39 am-11:55 am

1 stop4h 16m

Chicago Midway

Sat 12/13

11:05 am-4:26 pm

1 stop5h 21m

$249

Baton RougeChicago

BTR - ORD

BTRORD

Baton Rouge Ryan

Mon 1/19

5:15 pm-12:28 am

1 stop7h 13m

Chicago O'Hare Intl

Wed 2/11

8:54 am-3:58 pm

1 stop7h 04m

$249

Baton RougeChicago

BTR - ORD

BTRORD

Baton Rouge Ryan

Sat 2/14

5:00 pm-11:54 pm

1 stop6h 54m

Chicago O'Hare Intl

Tue 2/17

9:30 am-3:56 pm

1 stop6h 26m

$249

Baton RougeChicago

BTR - ORD

BTRORD

Baton Rouge Ryan

Wed 11/19

6:09 pm-12:15 am

1 stop6h 06m

Chicago O'Hare Intl

Sat 11/22

5:10 pm-10:44 pm

1 stop5h 34m

$249

Baton RougeChicago

BTR - ORD

BTRORD

Baton Rouge Ryan

Tue 12/9

10:32 am-3:20 pm

1 stop4h 48m

Chicago O'Hare Intl

Sat 12/13

9:49 am-4:26 pm

1 stop6h 37m

$249

Baton RougeChicago

BTR - ORD

BTRORD

Baton Rouge Ryan

Fri 1/23

1:37 pm-6:49 pm

1 stop5h 12m

Chicago O'Hare Intl

Sun 1/25

9:52 am-3:15 pm

1 stop5h 23m

$249

Baton RougeChicago

BTR - ORD

BTRORD

Baton Rouge Ryan

Sat 12/27

6:07 am-11:29 am

1 stop5h 22m

Chicago O'Hare Intl

Sat 1/3

12:35 pm-6:18 pm

1 stop5h 43m

$249

Baton RougeMoline

BTR - MLI

BTRMLI

Baton Rouge Ryan

Sat 2/21

5:00 pm-10:34 pm

1 stop5h 34m

Moline Quad-City

Tue 2/24

5:00 pm-10:04 pm

1 stop5h 04m

$249

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 46 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, March is the cheapest month in which you can book a flight from Baton Rouge to Illinois (average of $58). Flying from Baton Rouge to Illinois in January is currently the most expensive (average of $168). 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 October 29, 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 October 29, 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
7,992 reviews

Entertainment

7.9

Boarding

8.2

Food

7.3

Overall

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Delta
7.9
Good
7,992 reviews
Delta
7.9
Good
7,992 reviews

Entertainment

7.9

Boarding

8.2

Food

7.3

Overall

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
United Airlines
7.4
Good
8,999 reviews
Delta
7.9
Good
7,992 reviews

Entertainment

7.9

Boarding

8.2

Food

7.3

Overall

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
American Airlines
7.2
Good
11,032 reviews
Delta
7.9
Good
7,992 reviews

Entertainment

7.9

Boarding

8.2

Food

7.3

Overall

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.

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 5h 43m. Fly via Delta, United Airlines, or American Airlines to get the fastest option. The distance from Baton Rouge to Illinois is about 800 mi. This flight may include one or multiple stops.

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

    One-way options have recently been found by users for as low as $239 on Delta. Other airlines that offer cheap prices include United Airlines from $239 and American Airlines from $239 one-way.

  • 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 - Chicago O'Hare Intl, Baton Rouge Ryan - Lambert-St Louis 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, March is the cheapest month in which you can book a flight from Baton Rouge to Illinois (average of $58). Flying from Baton Rouge to Illinois in January is currently the most expensive (average of $168). 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 Baton Rouge 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 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 October 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$248Average$390FlexibilityNo cancel feeOn-time71%
DeltaCheapest$248Average$346FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$272Average$378FlexibilityNo cancel feeOn-time69%

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