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$159+ 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 9/17. Fares are subject to change and may not be available on all flights or dates of travel.
BTR — ORD
Apr 22 — Apr 291
Wed 4/22
Wed 4/29
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 March 23, 2026.

This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/263:48 pm
BTR
-
STL
1 stop5h 41m
Delta
Thu 5/287:15 am
STL
-
BTR
1 stop5h 34m
Delta
Deal found 3/19$317
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.
Tue 4/74:00 pm
BTR
-
STL
1 stop5h 06m
Delta
Sun 4/126:00 am
STL
-
BTR
1 stop6h 51m
Delta
Deal found 3/20$325
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.
Wed 6/243:20 pm
BTR
-
MDW
1 stop6h 25m
Delta
Wed 7/110:35 am
MDW
-
BTR
1 stop4h 12m
Delta
Deal found 3/18$329
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.
Mon 6/223:20 pm
BTR
-
ORD
1 stop5h 56m
Delta
Sun 6/286:00 am
ORD
-
BTR
1 stop6h 45m
Delta
Deal found 3/18$329
This United Airlines deal was found by Cheapflights users on 3/22. 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 4/76:09 pm
BTR
-
STL
1 stop4h 19m
United Airlines
Sat 4/1111:15 am
STL
-
BTR
2 stops9h 59m
United Airlines
Deal found 3/22$330
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.
Thu 4/97:05 pm
BTR
-
ORD
1 stop4h 49m
Delta
Wed 4/155:15 am
ORD
-
BTR
1 stop4h 31m
Delta
Deal found 3/20$334
This United Airlines deal was found by Cheapflights users on 3/21. 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 4/55:00 am
BTR
-
STL
1 stop4h 25m
United Airlines
Thu 4/96:00 am
STL
-
BTR
1 stop7h 25m
United Airlines
Deal found 3/21$338
This United Airlines deal was found by Cheapflights users on 3/22. 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 4/76:09 pm
BTR
-
ORD
1 stop6h 36m
United Airlines
Sat 4/117:30 am
ORD
-
BTR
1 stop5h 55m
United Airlines
Deal found 3/22$339
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.
Thu 6/256:09 pm
BTR
-
ORD
1 stop6h 36m
United Airlines
Mon 6/295:45 pm
ORD
-
BTR
1 stop5h 01m
United Airlines
Deal found 3/18$348
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.
Wed 6/243:20 pm
BTR
-
MDW
1 stop6h 25m
Delta
Sun 6/286:00 am
MDW
-
BTR
1 stop6h 45m
Delta
Deal found 3/18$354
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 5/267:36 pm
BTR
-
STL
1 stop4h 23m
American Airlines
Thu 5/286:00 am
STL
-
BTR
2 stops7h 48m
American Airlines
Deal found 3/19$357
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.
Thu 4/27:08 am
BTR
-
STL
1 stop5h 35m
American Airlines
Mon 4/65:12 am
STL
-
BTR
1 stop4h 42m
American Airlines
Deal found 3/18$361

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 March 23, 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

April

Cheapest in

August

Average price

$348
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. 5% potential increase in price ($20 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($12 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 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 March 23, 2026.
Use the filters below to find and compare flights from Baton Rouge to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Fri 4/10

4:00 pm-9:06 pm

1 stop5h 06m

Lambert-St Louis

Mon 4/13

7:25 am-1:04 pm

1 stop5h 39m

$325

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Tue 4/7

4:00 pm-9:06 pm

1 stop5h 06m

Lambert-St Louis

Sun 4/12

6:00 am-12:51 pm

1 stop6h 51m

$325

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Tue 4/7

7:05 pm-11:58 pm

1 stop4h 53m

Lambert-St Louis

Sat 4/11

6:00 am-12:51 pm

1 stop6h 51m

$325

Baton RougeChicago

BTR - MDW

BTRMDW

Baton Rouge Ryan

Tue 6/9

3:20 pm-9:45 pm

1 stop6h 25m

Chicago Midway

Sat 6/13

6:00 am-12:45 pm

1 stop6h 45m

$329

Baton RougeChicago

BTR - ORD

BTRORD

Baton Rouge Ryan

Wed 6/24

3:20 pm-9:16 pm

1 stop5h 56m

Chicago O'Hare Intl

Sun 6/28

6:00 am-12:45 pm

1 stop6h 45m

$329
Quickest round-trip

Baton RougeChicago

BTR - ORD

BTRORD

Baton Rouge Ryan

Mon 6/22

3:20 pm-8:18 pm

1 stop4h 58m

Chicago O'Hare Intl

Thu 7/2

1:15 pm-6:25 pm

1 stop5h 10m

$329

Baton RougeChicago

BTR - ORD

BTRORD

Baton Rouge Ryan

Tue 8/18

1:40 pm-6:39 pm

1 stop4h 59m

Chicago O'Hare Intl

Sat 8/22

8:15 am-2:47 pm

1 stop6h 32m

$329

Baton RougeChicago

BTR - ORD

BTRORD

Baton Rouge Ryan

Wed 8/19

6:00 am-12:08 pm

1 stop6h 08m

Chicago O'Hare Intl

Sat 8/22

3:35 pm-9:58 pm

1 stop6h 23m

$329

Baton RougeChicago

BTR - ORD

BTRORD

Baton Rouge Ryan

Mon 6/22

1:40 pm-8:18 pm

1 stop6h 38m

Chicago O'Hare Intl

Tue 6/30

9:30 am-2:47 pm

1 stop5h 17m

$329

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Wed 4/8

2:33 pm-10:17 pm

2 stops7h 44m

Lambert-St Louis

Thu 4/9

5:20 am-10:02 am

1 stop4h 42m

$330

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/19

Showing 1-10 of 49 resultsSorted by cheapest first
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2
3
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5

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 $48). Flying from Baton Rouge to Illinois in December is currently the most expensive (average of $159). 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.

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 March 23, 2026.
See what other customers who have flown with Delta,United Airlines, andAmerican 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
8,319 reviews

Food

7.2

Boarding

8.1

Overall

7.9

Comfort

7.9

Entertainment

7.8

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
8,319 reviews
Delta
7.9
Good
8,319 reviews

Food

7.2

Boarding

8.1

Overall

7.9

Comfort

7.9

Entertainment

7.8

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
9,460 reviews
Delta
7.9
Good
8,319 reviews

Food

7.2

Boarding

8.1

Overall

7.9

Comfort

7.9

Entertainment

7.8

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
7.1
Good
11,489 reviews
Delta
7.9
Good
8,319 reviews

Food

7.2

Boarding

8.1

Overall

7.9

Comfort

7.9

Entertainment

7.8

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 19m. Fly via Delta, American Airlines, or United 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 - Chicago O'Hare Intl, Baton Rouge Ryan - Chicago Midway and Baton Rouge Ryan - Lambert-St Louis.

  • 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 $48). Flying from Baton Rouge to Illinois in December is currently the most expensive (average of $159). 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 March 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$248Average$358FlexibilityNo cancel feeOn-time71%
DeltaCheapest$248Average$323FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$272Average$338FlexibilityNo cancel feeOn-time69%

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