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Baton Rouge

$163+ Cheap flights from Illinois to Baton Rouge (BTR)

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 4/8. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BTR
Apr 23 — Apr 301
Thu 4/23
Thu 4/30
1 adult, Economy
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Cheap flight deals from Illinois to Baton Rouge

Cheapest flights from Illinois to Baton Rouge
Explore the most affordable flight options available from Illinois to Baton Rouge. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 24, 2026.

This Delta deal was found by Cheapflights users on 3/23. 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 4/267:25 am
STL
-
BTR
1 stop5h 25m
Delta
Sun 5/106:03 am
BTR
-
STL
1 stop6h 17m
Delta
Deal found 3/23$317
This United Airlines deal was found by Cheapflights users on 3/23. 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 4/66:00 am
STL
-
BTR
1 stop7h 25m
United Airlines
Tue 4/74:08 pm
BTR
-
STL
1 stop6h 20m
United Airlines
Deal found 3/23$325
This American Airlines deal was found by Cheapflights users on 3/19. 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 4/213:45 pm
BMI
-
BTR
1 stop7h 01m
American Airlines
Tue 4/284:53 pm
BTR
-
BMI
1 stop5h 34m
American Airlines
Deal found 3/19$329
This Delta deal was found by Cheapflights users on 3/20. 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 4/256:00 am
MDW
-
BTR
1 stop6h 50m
Delta
Sat 5/24:00 pm
BTR
-
MDW
1 stop6h 28m
Delta
Deal found 3/20$329
This United Airlines deal was found by Cheapflights users on 3/23. 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 4/175:15 pm
ORD
-
BTR
1 stop5h 30m
United Airlines
Mon 4/206:08 pm
BTR
-
ORD
1 stop5h 07m
United Airlines
Deal found 3/23$329
This American Airlines deal was found by Cheapflights users on 3/19. 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 4/39:37 am
STL
-
BTR
2 stops7h 49m
American Airlines
Tue 4/76:32 pm
BTR
-
STL
1 stop4h 27m
American Airlines
Deal found 3/19$330
This American Airlines deal was found by Cheapflights users on 3/23. 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 4/104:40 pm
ORD
-
BTR
1 stop6h 06m
American Airlines
Mon 4/136:32 pm
BTR
-
ORD
1 stop5h 16m
American Airlines
Deal found 3/23$334
This American Airlines deal was found by Cheapflights users on 3/20. 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 4/48:00 am
STL
-
BTR
2 stops8h 01m
American Airlines
Wed 4/82:33 pm
BTR
-
STL
2 stops7h 44m
American Airlines
Deal found 3/20$335
This United Airlines deal was found by Cheapflights users on 3/19. 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 4/35:15 pm
ORD
-
BTR
1 stop5h 30m
United Airlines
Tue 4/76:09 pm
BTR
-
ORD
1 stop6h 36m
United Airlines
Deal found 3/19$339
This United Airlines deal was found by Cheapflights users on 3/23. 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 4/152:50 pm
PIA
-
BTR
2 stops7h 55m
United Airlines
Wed 4/225:00 am
BTR
-
PIA
2 stops9h 08m
United Airlines
Deal found 3/23$339
This United Airlines deal was found by Cheapflights users on 3/20. 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 4/96:00 am
STL
-
BTR
1 stop7h 25m
United Airlines
Thu 4/96:08 pm
BTR
-
STL
1 stop4h 20m
United Airlines
Deal found 3/20$343
This United Airlines deal was found by Cheapflights users on 3/20. 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 5/289:23 am
STL
-
BTR
2 stops8h 11m
United Airlines
Sun 5/315:00 am
BTR
-
STL
1 stop5h 07m
United Airlines
Deal found 3/20$352

Find flight deals from Illinois to Baton Rouge

Keep the following information in mind while searching for Illinois to Baton Rouge flight deals. Data was last updated March 24, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$317
(Delta)

One-way from

$159
(Delta)

Popular in

October

Cheapest in

May

Average price

$373
Provider with most accurate pricing for Chicago (CHI)-Baton Rouge Ryan flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Baton Rouge Ryan flights.
Search Deals
From Illinois to Baton Rouge Ryan
Search Deals
One-way flight from Illinois to Baton Rouge Ryan
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($26 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Baton Rouge 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 24, 2026.
Use the filters below to find and compare flights from Illinois to Baton Rouge that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisBaton Rouge

STL - BTR

STLBTR

Lambert-St Louis

Mon 4/6

6:00 am-1:25 pm

1 stop7h 25m

Baton Rouge Ryan

Fri 4/10

5:00 am-9:25 am

1 stop4h 25m

$325

St. LouisBaton Rouge

STL - BTR

STLBTR

Lambert-St Louis

Fri 4/3

7:03 am-12:51 pm

1 stop5h 48m

Baton Rouge Ryan

Tue 4/7

7:05 pm-11:58 pm

1 stop4h 53m

$325

St. LouisBaton Rouge

STL - BTR

STLBTR

Lambert-St Louis

Tue 4/14

10:09 am-3:33 pm

1 stop5h 24m

Baton Rouge Ryan

Wed 4/15

4:08 pm-10:28 pm

1 stop6h 20m

$325

BloomingtonBaton Rouge

BMI - BTR

BMIBTR

Bloomington-Normal

Tue 4/21

3:45 pm-10:46 pm

1 stop7h 01m

Baton Rouge Ryan

Tue 4/28

4:53 pm-10:27 pm

1 stop5h 34m

$329

ChicagoBaton Rouge

MDW - BTR

MDWBTR

Chicago Midway

Sat 4/25

6:00 am-12:50 pm

1 stop6h 50m

Baton Rouge Ryan

Sat 5/2

4:00 pm-10:28 pm

1 stop6h 28m

$329

ChicagoBaton Rouge

MDW - BTR

MDWBTR

Chicago Midway

Fri 6/26

5:11 pm-9:55 pm

1 stop4h 44m

Baton Rouge Ryan

Thu 7/2

4:00 pm-10:17 pm

1 stop6h 17m

$329

ChicagoBaton Rouge

ORD - BTR

ORDBTR

Chicago O'Hare Intl

Sat 5/30

7:30 am-3:34 pm

1 stop8h 04m

Baton Rouge Ryan

Wed 6/3

6:09 pm-11:14 pm

1 stop5h 05m

$329

ChicagoBaton Rouge

MDW - BTR

MDWBTR

Chicago Midway

Thu 4/23

12:52 pm-6:27 pm

1 stop5h 35m

Baton Rouge Ryan

Thu 4/30

4:00 pm-10:28 pm

1 stop6h 28m

$329

ChicagoBaton Rouge

MDW - BTR

MDWBTR

Chicago Midway

Sat 4/11

10:45 am-4:27 pm

1 stop5h 42m

Baton Rouge Ryan

Fri 4/17

4:00 pm-10:28 pm

1 stop6h 28m

$329

ChicagoBaton Rouge

ORD - BTR

ORDBTR

Chicago O'Hare Intl

Sat 5/30

8:10 am-3:06 pm

1 stop6h 56m

Baton Rouge Ryan

Wed 6/3

1:37 pm-8:26 pm

1 stop6h 49m

$329

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/20

Showing 1-10 of 52 resultsSorted by cheapest first
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Best time to book a flight from Illinois to Baton Rouge

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

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

Currently, February is the cheapest month in which you can book a flight from Illinois to Baton Rouge (average of $72). Flying from Illinois to Baton Rouge in July is currently the most expensive (average of $161). 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.

Related info for your journey

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

    For a flight from Illinois to Baton Rouge, you will be flying into Ryan. Baton Rouge Ryan (BTR) is just 5.8 mi from the center of the city.

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

    Departing from Illinois to Baton Rouge will take you 5h 48m. The distance from Illinois to Baton Rouge is about 569 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    The most popular route from Illinois to Baton Rouge is Chicago O'Hare Intl - Baton Rouge Ryan. You may also consider Chicago Midway - Baton Rouge Ryan or Lambert-St Louis - Baton Rouge Ryan.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Illinois to Baton Rouge (average of $72). Flying from Illinois to Baton Rouge in July is currently the most expensive (average of $161). 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

Traveling to a place near Baton Rouge?

Book flights to Baton Rouge if you plan to visit one of these locations
McComb
Saint Francisville
Denham Springs
Port Allen

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Illinois to Baton Rouge

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 Baton Rouge

Discover the top 3 airlines that operate flights from Illinois to Baton Rouge. 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 24, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$228Average$333FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$248Average$348FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$269Average$360FlexibilityNo cancel feeOn-time71%

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