Southwest Airlines is famous for its "no-fee" philosophy, offering several complimentary perks that other airlines charge for in 2026. The most significant benefit is two free checked bags (up to 50 lbs each) for every passenger, which is unique among major US domestic carriers. Onboard, Southwest provides complimentary snacks (like their iconic pretzels or snack mix) and non-alcoholic beverages, including water, juices, and sodas. While they are transitioning to assigned seating in 2026, they have maintained the perk of no change or cancellation fees, allowing you to receive a flight credit if your plans shift. For entertainment, passengers get free live TV and a library of movies and music that can be streamed to personal devices via the onboard Wi-Fi. While high-speed internet for browsing usually costs extra, messaging via apps like iMessage or WhatsApp is often free for members of their Rapid Rewards program. They also provide free gate-to-gate strollers and car seat checking for families traveling with young children.