Traveling with kids? The Southwest Airlines Seat Selection Policy makes it easier. There are no assigned seats, but families with children under six get priority boarding between groups A and B. That means you can find seats together without paying extra. To improve your spot even more, try EarlyBird Check-In or upgraded boarding. With the Southwest Airlines Seat Selection Policy, early planning helps you sit where you want. It’s a flexible and family-friendly way to fly. Check in 24 hours in advance, arrive early, and enjoy your flight knowing you’ll have seating options that work for everyone.