Major carriers for DFW to BHM routes include American Airlines (hubbed at DFW), Delta Air Lines (often via ATL), and Southwest Airlines (regional service patterns vary). In September, American may offer the most nonstop options out of Dallas/Fort Worth International Airport (DFW), while Delta provides competitive one-stop itineraries through Atlanta. Southwest often offers low, flexible fares and two free checked bags but may operate more limited schedules to Birmingham-Shuttlesworth International Airport (BHM). Compare ticket price, checked-baggage policies, and loyalty program benefits: choose Southwest for simple, low-fee travel; American for potential nonstop convenience; Delta for smooth connections through ATL. CTA: Review detailed fare rules and baggage allowances before booking your September flight.