Major carriers and low-cost airlines serving the Fort Lauderdale (All Airports) (FLLA) to Houston (All Airports) (HOUA) market include American Airlines, United, Spirit, Frontier, JetBlue, and Southwest. American and United typically offer more legroom and flexible change policies, while Spirit and Frontier provide ultra-low fares with ancillary fees. Southwest may offer free checked bags and flexible rebooking, making it a strong value choice even if base fares are slightly higher. Compare price, baggage policies, seat comfort, and loyalty benefits when booking October travel.