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$160+ 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 4/18. Fares are subject to change and may not be available on all flights or dates of travel.
BTR — ORD
Mar 31 — Apr 71
Mon 3/31
Mon 4/7
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 March 26, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$249
(American Airlines)

One-way from

$160
(Delta)

Popular in

December

Cheapest in

November

Average price

$363
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. 1% potential increase in price ($6 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 March 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 March 26, 2025.

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.
Tue 4/225:45 pmBTR - MDW
1 stop4h 37mDelta
Tue 4/299:52 amMDW - BTR
1 stop7h 07mDelta
Deal found 3/23$249
This American Airlines deal was found by Cheapflights users on 3/25. 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 4/254:23 pmBTR - ORD
1 stop7h 26mAmerican Airlines
Wed 4/304:45 pmORD - BTR
1 stop6h 00mAmerican Airlines
Deal found 3/25$249
This American Airlines deal was found by Cheapflights users on 3/25. 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 4/181:07 pmBTR - STL
1 stop6h 16mAmerican Airlines
Sun 4/205:26 amSTL - BTR
1 stop4h 18mAmerican Airlines
Deal found 3/25$249
This United Airlines deal was found by Cheapflights users on 3/24. 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 4/85:00 amBTR - PIA
2 stops8h 57mUnited Airlines
Sat 4/1210:58 amPIA - BTR
2 stops10h 54mUnited Airlines
Deal found 3/24$269
This United Airlines deal was found by Cheapflights users on 3/24. 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 6/2012:14 pmBTR - STL
1 stop4h 39mUnited Airlines
Mon 6/235:55 pmSTL - BTR
1 stop5h 04mUnited Airlines
Deal found 3/24$270
This United Airlines deal was found by Cheapflights users on 3/25. 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 5/15:05 amBTR - ORD
1 stop5h 06mUnited Airlines
Sun 5/45:15 amORD - BTR
1 stop8h 03mUnited Airlines
Deal found 3/25$277
This Delta deal was found by Cheapflights users on 3/25. 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.
Fri 5/303:30 pmBTR - ORD
1 stop5h 50mDelta
Mon 6/27:05 amORD - BTR
1 stop6h 03mDelta
Deal found 3/25$279
This Delta deal was found by Cheapflights users on 3/24. 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.
Fri 6/1312:30 pmBTR - STL
1 stop5h 29mDelta
Mon 6/1610:44 amSTL - BTR
1 stop3h 49mDelta
Deal found 3/24$294
This American Airlines deal was found by Cheapflights users on 3/24. 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 4/104:37 pmBTR - MLI
1 stop5h 12mAmerican Airlines
Sun 4/136:30 amMLI - BTR
1 stop7h 40mAmerican Airlines
Deal found 3/24$299
This United Airlines deal was found by Cheapflights users on 3/25. 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 4/97:15 amBTR - MLI
2 stops9h 32mUnited Airlines
Sun 4/136:30 amMLI - BTR
2 stops10h 22mUnited Airlines
Deal found 3/25$339
This American Airlines deal was found by Cheapflights users on 3/25. 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 5/244:32 pmBTR - PIA
1 stop7h 24mAmerican Airlines
Mon 5/263:37 pmPIA - BTR
1 stop5h 10mAmerican Airlines
Deal found 3/25$492
This American Airlines deal was found by Cheapflights users on 3/25. 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 4/257:22 amBTR - SPI
2 stops10h 39mAmerican Airlines
Sun 4/2711:17 amSPI - BTR
2 stops9h 31mAmerican Airlines
Deal found 3/25$575

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 26, 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 - ORD

BTRORD

Baton Rouge Ryan

Tue 4/22

5:45 pm-11:59 pm

1 stop6h 14m

Chicago O'Hare Intl

Tue 4/29

7:05 am-1:23 pm

1 stop6h 18m

$249

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Fri 4/18

1:07 pm-7:23 pm

1 stop6h 16m

Lambert-St Louis

Sun 4/20

5:26 am-9:44 am

1 stop4h 18m

$249

Baton RougeChicago

BTR - ORD

BTRORD

Baton Rouge Ryan

Sat 4/12

6:22 am-2:15 pm

1 stop7h 53m

Chicago O'Hare Intl

Sun 4/20

10:28 am-4:07 pm

1 stop5h 39m

$254

Baton RougeChicago

BTR - ORD

BTRORD

Baton Rouge Ryan

Wed 7/30

12:14 pm-7:48 pm

1 stop7h 34m

Chicago O'Hare Intl

Sat 8/2

7:10 am-1:18 pm

1 stop6h 08m

$267

Baton RougePeoria

BTR - PIA

BTRPIA

Baton Rouge Ryan

Tue 4/8

5:00 am-1:57 pm

2 stops8h 57m

Greater Peoria

Sat 4/12

10:58 am-9:52 pm

2 stops10h 54m

$269

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Fri 6/20

12:14 pm-4:53 pm

1 stop4h 39m

Lambert-St Louis

Mon 6/23

5:55 pm-10:59 pm

1 stop5h 04m

$270

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Fri 6/13

12:30 pm-5:59 pm

1 stop5h 29m

Lambert-St Louis

Mon 6/16

10:44 am-2:33 pm

1 stop3h 49m

$294

Baton RougeMoline

BTR - MLI

BTRMLI

Baton Rouge Ryan

Thu 4/10

4:37 pm-9:49 pm

1 stop5h 12m

Moline Quad-City

Sun 4/13

6:30 am-2:10 pm

1 stop7h 40m

$299

Baton RougeMoline

BTR - MLI

BTRMLI

Baton Rouge Ryan

Wed 4/9

7:15 am-4:47 pm

2 stops9h 32m

Moline Quad-City

Sun 4/13

6:30 am-4:52 pm

2 stops10h 22m

$339

Baton RougeChicago

BTR - MDW

BTRMDW

Baton Rouge Ryan

Fri 5/30

3:30 pm-9:27 pm

1 stop5h 57m

Chicago Midway

Mon 6/2

6:00 am-1:08 pm

1 stop7h 08m

$344

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

Showing 1-10 of 22 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, August is the cheapest month in which you can book a flight from Baton Rouge to Illinois (average of $245). Flying from Baton Rouge to Illinois in March is currently the most expensive (average of $323). 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 March 26, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Baton Rouge to Illinois as you normally would.

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 March 26, 2025.
To help decide which airline to fly from Baton Rouge to Illinois, see what other customers have to say about Delta, United Airlines and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,891 reviews

Overall

8.0

Boarding

8.2

Comfort

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,891 reviews
Delta
8.0
Very good
7,891 reviews

Overall

8.0

Boarding

8.2

Comfort

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,608 reviews
Delta
8.0
Very good
7,891 reviews

Overall

8.0

Boarding

8.2

Comfort

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,891 reviews

Overall

8.0

Boarding

8.2

Comfort

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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.

  • 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 $160 on Delta. Other airlines that offer cheap prices include American Airlines from $165 and United Airlines from $259 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 - 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, August is the cheapest month in which you can book a flight from Baton Rouge to Illinois (average of $245). Flying from Baton Rouge to Illinois in March is currently the most expensive (average of $323). 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 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$238Average$435FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$248Average$349FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$275Average$494FlexibilityNo cancel feeOn-time69%
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