Southwest Airlines is widely considered an excellent choice for domestic travelers who value flexibility and transparency. It is the only major U.S. carrier that still offers "Two Bags Fly Free" (up to 50 lbs each), which can save a family of four over $240 in round-trip fees compared to rivals. Southwest is also famous for its "No Change Fees" policy, allowing you to cancel or rebook flights up until 10 minutes before departure for a full travel credit. However, in 2026, the experience has changed significantly: Southwest has officially retired its "Open Seating" model in favor of assigned seating to better compete with Delta and American. While some loyalists miss the old "first-come, first-served" vibe, most travelers appreciate the ability to secure a specific seat in advance. With its legendary friendly crew and high-frequency "point-to-point" network, Southwest remains a top-tier value option, particularly for those who travel with heavy luggage or need the peace of mind that their plans can change without financial penalty.