$266 Cheap Flights from Rapid City (RAP) to Baton Rouge (BTR)

View $266 flight on Sun, Nov 16, 2025Opens in a new window

Popular airlines from Rapid City Regional Airport (RAP) to Baton Rouge Metropolitan Airport (BTR)

    notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
    deals illustration

    Book smarter

    Save up to 30% on select hotels after you book a flight*
    trophy illustration

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Cheap Flights from Rapid City to Baton Rouge (RAP-BTR)

Prices were available within the past 7 days and start at $266 for one-way flights and $404 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Wed, Oct 22 - Fri, Oct 31
RAP
Rapid City
BTR
Baton Rouge
$404 Roundtrip, found 6 days ago
$404
Roundtrip
found 6 days ago
Select United flight, departing Wed, Oct 22 from Rapid City to Baton Rouge, returning Fri, Oct 31, priced at $404 found 6 days ago
United
Sat, Oct 18 - Thu, Oct 23
RAP
Rapid City
BTR
Baton Rouge
$419 Roundtrip, found 6 days ago
$419
Roundtrip
found 6 days ago
Select United flight, departing Sat, Oct 18 from Rapid City to Baton Rouge, returning Thu, Oct 23, priced at $419 found 6 days ago
United
Thu, Oct 23 - Fri, Oct 31
RAP
Rapid City
BTR
Baton Rouge
$435 Roundtrip, found 6 days ago
$435
Roundtrip
found 6 days ago
Select United flight, departing Thu, Oct 23 from Rapid City to Baton Rouge, returning Fri, Oct 31, priced at $435 found 6 days ago
United
Sat, Oct 18 - Fri, Oct 24
RAP
Rapid City
BTR
Baton Rouge
$455 Roundtrip, found 6 days ago
$455
Roundtrip
found 6 days ago
Select United flight, departing Sat, Oct 18 from Rapid City to Baton Rouge, returning Fri, Oct 24, priced at $455 found 6 days ago
United
Tue, Dec 30 - Wed, Jan 7
RAP
Rapid City
BTR
Baton Rouge
$457 Roundtrip, found 3 days ago
$457
Roundtrip
found 3 days ago
Select United flight, departing Tue, Dec 30 from Rapid City to Baton Rouge, returning Wed, Jan 7, priced at $457 found 3 days ago
United
Sat, Oct 18 - Tue, Oct 21
RAP
Rapid City
BTR
Baton Rouge
$459 Roundtrip, found 6 days ago
$459
Roundtrip
found 6 days ago
Select United flight, departing Sat, Oct 18 from Rapid City to Baton Rouge, returning Tue, Oct 21, priced at $459 found 6 days ago
United
Thu, Oct 23 - Tue, Oct 28
RAP
Rapid City
BTR
Baton Rouge
$462 Roundtrip, found 4 days ago
$462
Roundtrip
found 4 days ago
Select United flight, departing Thu, Oct 23 from Rapid City to Baton Rouge, returning Tue, Oct 28, priced at $462 found 4 days ago
United
Fri, Nov 14 - Wed, Nov 19
RAP
Rapid City
BTR
Baton Rouge
$465 Roundtrip, found 4 hours ago
$465
Roundtrip
found 4 hours ago
Select United flight, departing Fri, Nov 14 from Rapid City to Baton Rouge, returning Wed, Nov 19, priced at $465 found 4 hours ago
American Airlines
Thu, Jan 1 - Wed, Jan 7
RAP
Rapid City
BTR
Baton Rouge
$469 Roundtrip, found 3 days ago
$469
Roundtrip
found 3 days ago
Select American Airlines flight, departing Thu, Jan 1 from Rapid City to Baton Rouge, returning Wed, Jan 7, priced at $469 found 3 days ago
Delta
Fri, Nov 14 - Wed, Nov 19
RAP
Rapid City
BTR
Baton Rouge
$669 Roundtrip, found 4 hours ago
$669
Roundtrip
found 4 hours ago
Select Delta flight, departing Fri, Nov 14 from Rapid City to Baton Rouge, returning Wed, Nov 19, priced at $669 found 4 hours ago

Frequently asked questions

How much does a flight from Rapid City Regional Airport (RAP) to Baton Rouge Metropolitan Airport (BTR) cost?
Grab a cheap one-way flight from $266 or cheap return flight from $404 from Rapid City Regional Airport (RAP) 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 Rapid City Regional Airport (RAP) to Baton Rouge Metropolitan Airport (BTR)?
Planning your getaway for October may help you find better deals, as it's the cheapest month for flights between RAP and BTR. You'll typically find the lowest fares during off-peak months.
What is the cheapest airline that flies from Rapid City Regional Airport (RAP) to Baton Rouge Metropolitan Airport (BTR)?
Use the filters on Expedia to compare different airlines and find the most affordable carrier that'll fly you from RAP to BTR. Then, sort your results by "Price (lowest to highest)" to snap up a good deal.
How many flights per day from Rapid City Regional Airport (RAP) to Baton Rouge Metropolitan Airport (BTR)?
You'll have to book a flight with a layover if you're traveling from Rapid City Regional Airport (RAP) to Baton Rouge Metropolitan Airport (BTR). There are no daily direct flights on this route. However, simply filter your search to include one or more stops to find an option that works for you.
What day of the week has the most flights from RAP to BTR?
Usually you'll find the most flight options available on a Friday. Tuesdays tend to be the quietest.* However, this can vary based on the season, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Rapid City Regional Airport (RAP) to Baton Rouge Metropolitan Airport (BTR)?
Opt for a flight from Rapid City Regional Airport (RAP) to Baton Rouge Metropolitan Airport (BTR) that leaves before 3 PM to reduce the likelihood of delays and cancellations. Departures after this time have a 22% higher chance of being canceled, on average.**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 Rapid City Regional Airport (RAP) to Baton Rouge Metropolitan Airport (BTR) last-minute?
Last-minute bookings from RAP to BTR are generally more expensive. To secure the best prices, start searching for flights as early as possible. That said, if you're flexible with your travel dates, it's possible to land a cheap fare right before your trip.
Is it cheaper to book a RAP to BTR flight and hotel package?
Compared with arranging flights and hotels separately, booking a RAP to BTR flight and hotel package with Expedia could lead to significant savings. Better still, having everything in one place will take the hassle out of planning your trip. Just pick your flights and select from our extensive range of hotels, then customize your trip with extras like car rentals and activities.
Can I cancel or change the date of my flight from Rapid City Regional Airport (RAP) to Baton Rouge Metropolitan Airport (BTR)?
You can usually cancel or reschedule your RAP to BTR flight. However, if it's been more than 24 hours since booking, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find more information on our Customer Service portal.

Travel information

Origin airport
Rapid City Regional
Destination airport
Baton Rouge Metropolitan
Airlines serving
American Airlines, Delta, United
Roundtrip price
$404
Distance
1136 mi

Book with confidence

Rapid City to Baton Rouge Flights

The cheapest times to fly from Rapid City 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 Rapid City to Baton Rouge are during the month of October. You can find some of the cheapest flights from Rapid City to Baton Rouge with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Rapid City to Baton Rouge

Sunday is one of the best days to book for cheap flights from Rapid City 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 Rapid City 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 Rapid City to Baton Rouge in 2025. You can also book with separate airlines for your outbound and return journeys, from $266 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 Rapid City 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 Rapid City 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.

 

Rapid City to Baton Rouge Flights

Explore a world of travel with Expedia

*Available to One Key members.