$375 Cheap Flights from Champaign (CMI) to Baton Rouge (BTR)

View $375 flight on Tue, Sep 23, 2025Opens in a new window

Popular airlines from Champaign, IL (CMI-University Of Illinois Urbana-Champaign Williard) to Baton Rouge Metropolitan Airport (BTR)

Cheap Flights from Champaign to Baton Rouge (CMI-BTR)

Prices were available within the past 7 days and start at $375 for one-way flights and $411 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sat, Sep 27 - Sun, Sep 28
CMI
Champaign
BTR
Baton Rouge
$411 Roundtrip, found 3 days ago
$411
Roundtrip
found 3 days ago
Select American Airlines flight, departing Sat, Sep 27 from Champaign to Baton Rouge, returning Sun, Sep 28, priced at $411 found 3 days ago
American Airlines
Tue, Sep 23 - Sun, Sep 28
CMI
Champaign
BTR
Baton Rouge
$421 Roundtrip, found 3 days ago
$421
Roundtrip
found 3 days ago
Select American Airlines flight, departing Tue, Sep 23 from Champaign to Baton Rouge, returning Sun, Sep 28, priced at $421 found 3 days ago
American Airlines
Fri, Sep 26 - Sun, Sep 28
CMI
Champaign
BTR
Baton Rouge
$442 Roundtrip, found 3 days ago
$442
Roundtrip
found 3 days ago
Select American Airlines flight, departing Fri, Sep 26 from Champaign to Baton Rouge, returning Sun, Sep 28, priced at $442 found 3 days ago
American Airlines
Sat, Sep 27 - Sun, Sep 28
CMI
Champaign
BTR
Baton Rouge
$445 Roundtrip, found 1 day ago
$445
Roundtrip
found 1 day ago
Select American Airlines flight, departing Sat, Sep 27 from Champaign to Baton Rouge, returning Sun, Sep 28, priced at $445 found 1 day ago
American Airlines
Sat, Oct 18 - Sat, Nov 1
CMI
Champaign
BTR
Baton Rouge
$450 Roundtrip, found 1 hour ago
$450
Roundtrip
found 1 hour ago
Select American Airlines flight, departing Sat, Oct 18 from Champaign to Baton Rouge, returning Sat, Nov 1, priced at $450 found 1 hour ago
American Airlines
Tue, Nov 25 - Wed, Dec 10
CMI
Champaign
BTR
Baton Rouge
$456 Roundtrip, found 3 hours ago
$456
Roundtrip
found 3 hours ago
Select American Airlines flight, departing Tue, Nov 25 from Champaign to Baton Rouge, returning Wed, Dec 10, priced at $456 found 3 hours ago
American Airlines
Sat, Oct 18 - Tue, Nov 4
CMI
Champaign
BTR
Baton Rouge
$460 Roundtrip, found 1 hour ago
$460
Roundtrip
found 1 hour ago
Select American Airlines flight, departing Sat, Oct 18 from Champaign to Baton Rouge, returning Tue, Nov 4, priced at $460 found 1 hour ago
American Airlines
Wed, Oct 1 - Wed, Oct 22
CMI
Champaign
BTR
Baton Rouge
$466 Roundtrip, found 3 hours ago
$466
Roundtrip
found 3 hours ago
Select American Airlines flight, departing Wed, Oct 1 from Champaign to Baton Rouge, returning Wed, Oct 22, priced at $466 found 3 hours ago
American Airlines
Sat, Sep 27 - Sun, Sep 28
CMI
Champaign
BTR
Baton Rouge
$468 Roundtrip, found 3 days ago
$468
Roundtrip
found 3 days ago
Select American Airlines flight, departing Sat, Sep 27 from Champaign to Baton Rouge, returning Sun, Sep 28, priced at $468 found 3 days ago
American Airlines
Tue, Oct 21 - Sat, Oct 25
CMI
Champaign
BTR
Baton Rouge
$470 Roundtrip, found 1 hour ago
$470
Roundtrip
found 1 hour ago
Select American Airlines flight, departing Tue, Oct 21 from Champaign to Baton Rouge, returning Sat, Oct 25, priced at $470 found 1 hour ago
American Airlines
Sat, Sep 27 - Sun, Sep 28
CMI
Champaign
BTR
Baton Rouge
$475 Roundtrip, found 20 hours ago
$475
Roundtrip
found 20 hours ago
Select American Airlines flight, departing Sat, Sep 27 from Champaign to Baton Rouge, returning Sun, Sep 28, priced at $475 found 20 hours ago
American Airlines
Wed, Oct 1 - Tue, Oct 14
CMI
Champaign
BTR
Baton Rouge
$476 Roundtrip, found 1 hour ago
$476
Roundtrip
found 1 hour ago
Select American Airlines flight, departing Wed, Oct 1 from Champaign to Baton Rouge, returning Tue, Oct 14, priced at $476 found 1 hour ago
American Airlines
Sat, Oct 18 - Wed, Nov 5
CMI
Champaign
BTR
Baton Rouge
$480 Roundtrip, found 1 hour ago
$480
Roundtrip
found 1 hour ago
Select American Airlines flight, departing Sat, Oct 18 from Champaign to Baton Rouge, returning Wed, Nov 5, priced at $480 found 1 hour ago

Alternative airports near Baton Rouge

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Baton Rouge Metropolitan BTR. Cheapest and Closest option available. Average driving time to city center is 10 minutes. Flights from $470
BTR
Baton Rouge Metropolitan
CheapestClosest
Average driving time to city center10 min
Flights from $470
Flights from Champaign (CMI) to Baton Rouge (BTR)
Origin airport
University Of Illinois Urbana-Champaign Williard
Destination airport
Baton Rouge Metropolitan
Airlines serving
American Airlines
Roundtrip price
$411
Distance
676 mi

Champaign to Baton Rouge Flights

The cheapest times to fly from Champaign to Baton Rouge

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Champaign to Baton Rouge are during the month of September. You can find some of the cheapest flights from Champaign to Baton Rouge with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Champaign to Baton Rouge

Sunday is one of the best days to book for cheap flights from Champaign to Baton Rouge: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Champaign to Baton Rouge

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Champaign to Baton Rouge in 2025. You can also book with separate airlines for your outbound and return journeys, from $375 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Champaign to Baton Rouge flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Champaign to Baton Rouge airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from University Of Illinois Urbana-Champaign Williard Airport (CMI) to Baton Rouge Metropolitan Airport (BTR) cost?
Snag a cheap one-way flight from $375 or cheap return flight from $411 from University Of Illinois Urbana-Champaign Williard Airport (CMI) to Baton Rouge Metropolitan Airport (BTR) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from University Of Illinois Urbana-Champaign Williard Airport (CMI) to Baton Rouge Metropolitan Airport (BTR)?
September is the most affordable month to fly from CMI to BTR. Traveling outside of peak seasons is often the key to finding better deals on flights.
What is the cheapest airline that flies from University Of Illinois Urbana-Champaign Williard Airport (CMI) to Baton Rouge Metropolitan Airport (BTR)?
Expedia's filter tool lets you easily compare travel time, airlines and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to find the carrier with the cheapest CMI to BTR flight.
How many flights per day from University Of Illinois Urbana-Champaign Williard Airport (CMI) to Baton Rouge Metropolitan Airport (BTR)?
You'll need to book a flight with a layover if you're traveling from University Of Illinois Urbana-Champaign Williard Airport (CMI) to Baton Rouge Metropolitan Airport (BTR). There are no daily direct flights on this route. However, simply filter your search to include one or two stops to discover an option that works for you.
What day of the week has the most flights from CMI to BTR?
Friday is usually the busiest day for flights, while Tuesday is often the quietest.* Remember that flight schedules can change depending on various factors, such as the airline and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from University Of Illinois Urbana-Champaign Williard Airport (CMI) to Baton Rouge Metropolitan Airport (BTR)?
To touch down at Baton Rouge Metropolitan Airport (BTR) on schedule, pick a flight that leaves University Of Illinois Urbana-Champaign Williard Airport (CMI) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from University Of Illinois Urbana-Champaign Williard Airport (CMI) to Baton Rouge Metropolitan Airport (BTR) last-minute?
Waiting until just before your trip to book a flight from CMI to BTR often results in higher prices. Although you may find some last-minute offers, they aren't always guaranteed. Allow some flexibility in your schedule for the best chance of getting a bargain.
Is it cheaper to book a CMI to BTR flight and hotel package?
Compared with arranging hotels and flights separately, booking a CMI to BTR flight and hotel package with Expedia could result in significant savings. Better yet, having everything in one convenient place will take the hassle out of planning your trip. Just pick your flights and choose from our wide range of hotels, then personalize your trip with extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from University Of Illinois Urbana-Champaign Williard Airport (CMI) to Baton Rouge Metropolitan Airport (BTR)?
If you booked your CMI to BTR flight in the last 24 hours, you may be able to cancel or modify it without any fees. Depending on the airline and the fare type you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for further details.

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*Available to One Key members.