Southwest has round-trip flights from Austin (AUS) to Nashville (BNA) for $105-$123, NONSTOP. Flights February to May. Weekends available. Origin/Destination reversible.
Note: This is part of the wider “WOW” coupon-code sale. Note that you don’t need to enter the coupon code to see the discount. Use the fare calendar.
Note: Delta is matching on some dates.
Carry-on and checked bag are allowed for free. Southwest doesn’t charge change fees.