$109 Cheap Delta flights St. Louis (STL) to Baton Rouge (BTR)

Finding cheap one-way Delta Air Lines flights from STL to BTR from $109 on Expedia couldn’t be easier — just filter by “Price (lowest to highest).” Alternatively, check out our affordable round-trip fares from $211 for your next getaway.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Search for round-trip or one-way flights to Baton Rouge in December or January. You could find lower fares with Delta Air Lines during these off-season months.

To find cheap Delta Air Lines fares from Lambert-St. Louis Intl. Airport (STL) to Baton Rouge Metropolitan Airport (BTR), start searching one to three months before your intended departure. Securing domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also impact how much you pay. Sunday is generally the cheapest, while Monday is often the most expensive for domestic flights. You can save 6% on average by choosing to book on a Sunday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

Fill in your dates, press search and use the “Nonstop” filter on Expedia to browse any direct flights from STL to BTR with Delta Air Lines or another carrier.

Search Delta Air Lines’s earliest flights from STL to BTR by using our “Early Morning” and “Morning” filters. Not only will you get to where you’re going sooner, early departures also have a 20% less chance of being canceled.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

Delta Air Lines flights from Lambert-St. Louis Intl. Airport (STL) to Baton Rouge come in to land at Baton Rouge Metropolitan Airport (BTR). This is the main gateway to this destination.

Taking off from STL to BTR with Delta Air Lines means enjoying a range of perks, including a rewarding loyalty program and an excellent in-flight experience. Plus, when booking through Expedia, One Key™ members can earn OneKeyCash™* to spend on select future travel purchases. That’s in addition to the Delta SkyMiles points you can earn with Delta Air Lines.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

It’s generally possible to change or cancel your flight, although additional fees may apply if you made your booking more than 24 hours ago. Need flexible options? Make use of Expedia’s “Changes included” or “No cancel fee” filter to find flights that won’t charge extra if you need to revise your plans. To update your booking, go to “Trips,” select your flight and click on “Manage Booking” for more details.