The choice between Southwest and American Airlines in 2026 depends entirely on your travel priorities. Southwest is generally better for budget-conscious travelers and those who want flexibility; as of late 2025/early 2026, they have maintained a friendly "bags fly free" (or low cost) reputation and have no change fees. However, Southwest has recently transitioned away from its famous "open seating" to assigned seating, which has made it more competitive with traditional carriers. American Airlines is superior for travelers who want a "full-service" experience, including a true First Class cabin, global lounge access (Admirals Club), and a massive international network serving over 50 countries. American also offers more "premium" amenities like seatback entertainment and power outlets on most mainline flights, which Southwest historically lacks. Essentially, if you are flying a short domestic hop and want reliability and value, Southwest is the winner. If you are a frequent flyer looking for elite status perks, luxury upgrades, or long-haul international connections, American Airlines is the better choice.