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$100+ 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 6/30. Fares are subject to change and may not be available on all flights or dates of travel.
BTR — ORD
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$249
(Delta)

One-way from

$100
(American Airlines)

Popular in

December

Cheapest in

November

Average price

$338
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 ($8 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 12, 2025.

This Delta deal was found by Cheapflights users on 6/12. 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 8/204:38 pmBTR - MDW
1 stop5h 11mDelta
Sat 8/2310:11 amMDW - BTR
1 stop5h 42mDelta
Deal found 6/12$249
This Delta deal was found by Cheapflights users on 6/12. 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 7/265:18 pmBTR - ORD
1 stop6h 51mDelta
Thu 7/315:35 amORD - BTR
1 stop6h 00mDelta
Deal found 6/12$249
This Delta deal was found by Cheapflights users on 6/10. 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 7/96:10 amBTR - STL
1 stop6h 24mDelta
Mon 7/143:41 pmSTL - BTR
1 stop6h 17mDelta
Deal found 6/10$249
This American Airlines deal was found by Cheapflights users on 6/9. 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 6/256:32 pmBTR - ORD
1 stop5h 25mAmerican Airlines
Fri 7/46:00 amORD - BTR
1 stop5h 45mAmerican Airlines
Deal found 6/9$254
This American Airlines deal was found by Cheapflights users on 6/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/256:32 pmBTR - STL
1 stop5h 27mAmerican Airlines
Sun 6/294:37 pmSTL - BTR
1 stop7h 07mAmerican Airlines
Deal found 6/10$259
This United Airlines deal was found by Cheapflights users on 6/11. 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 6/265:10 amBTR - STL
1 stop4h 21mUnited Airlines
Mon 6/306:15 pmSTL - BTR
1 stop5h 09mUnited Airlines
Deal found 6/11$329
This United Airlines deal was found by Cheapflights users on 6/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/136:58 pmBTR - ORD
1 stop5h 15mUnited Airlines
Sun 6/156:00 amORD - BTR
1 stop5h 24mUnited Airlines
Deal found 6/10$339
This United Airlines deal was found by Cheapflights users on 6/11. 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 7/105:10 amBTR - PIA
2 stops9h 53mUnited Airlines
Sun 7/133:39 pmPIA - BTR
2 stops7h 45mUnited Airlines
Deal found 6/11$533
This United Airlines deal was found by Cheapflights users on 6/9. 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 8/84:02 pmBTR - MLI
2 stops18h 20mUnited Airlines
Tue 8/123:45 pmMLI - BTR
2 stops7h 39mUnited Airlines
Deal found 6/9$572
This American Airlines deal was found by Cheapflights users on 6/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/204:26 pmBTR - MLI
1 stop6h 43mAmerican Airlines
Sun 6/224:20 pmMLI - BTR
1 stop7h 24mAmerican Airlines
Deal found 6/11$592

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 June 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 RougeChicago

BTR - MDW

BTRMDW

Baton Rouge Ryan

Wed 8/20

4:38 pm-9:49 pm

1 stop5h 11m

Chicago Midway

Sat 8/23

10:11 am-3:53 pm

1 stop5h 42m

$249

Baton RougeChicago

BTR - ORD

BTRORD

Baton Rouge Ryan

Sat 7/26

5:18 pm-12:09 am

1 stop6h 51m

Chicago O'Hare Intl

Thu 7/31

5:35 am-11:35 am

1 stop6h 00m

$249

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Wed 7/9

6:10 am-12:34 pm

1 stop6h 24m

Lambert-St Louis

Mon 7/14

3:41 pm-9:58 pm

1 stop6h 17m

$249

Baton RougeChicago

BTR - ORD

BTRORD

Baton Rouge Ryan

Wed 6/25

6:32 pm-11:57 pm

1 stop5h 25m

Chicago O'Hare Intl

Fri 7/4

6:00 am-11:45 am

1 stop5h 45m

$254

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Wed 6/25

6:32 pm-11:59 pm

1 stop5h 27m

Lambert-St Louis

Sun 6/29

4:37 pm-11:44 pm

1 stop7h 07m

$259

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Thu 11/20

5:07 am-2:20 pm

2 stops9h 13m

Lambert-St Louis

Mon 11/24

8:20 am-3:21 pm

1 stop7h 01m

$324

Baton RougeChicago

BTR - ORD

BTRORD

Baton Rouge Ryan

Fri 9/12

4:03 pm-10:41 pm

1 stop6h 38m

Chicago O'Hare Intl

Sun 9/14

6:00 am-11:11 am

1 stop5h 11m

$349

Baton RougePeoria

BTR - PIA

BTRPIA

Baton Rouge Ryan

Thu 7/10

5:10 am-3:03 pm

2 stops9h 53m

Greater Peoria

Sun 7/13

3:39 pm-11:24 pm

2 stops7h 45m

$533

Baton RougeMoline

BTR - MLI

BTRMLI

Baton Rouge Ryan

Fri 8/8

4:02 pm-10:22 am

2 stops18h 20m

Moline Quad-City

Tue 8/12

3:45 pm-11:24 pm

2 stops7h 39m

$572

Baton RougeSt. Louis

BTR - STL

BTRSTL

Baton Rouge Ryan

Mon 6/30

6:26 pm-11:19 pm

1 stop4h 53m

$100

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 17 results
1
2

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 $321). 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 June 12, 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 June 12, 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
7,946 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,946 reviews
Delta
8.0
Very good
7,946 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,790 reviews
Delta
8.0
Very good
7,946 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,946 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 $100 on American Airlines. Other airlines that offer cheap prices include Delta from $169 and United Airlines from $209 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 $321). 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

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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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$238Average$373FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$248Average$361FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$275Average$494FlexibilityNo cancel feeOn-time69%

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