Southwest Airlines offers passengers a seamless and effective travel experience out of Terminal 1 at Las Vegas McCarran International Airport (LAS). Southwest Airlines LAS Terminal Take advantage of self-service kiosks for speedy check-ins and helpful, kind staff. There are lots of places to eat and shop in the terminal to kill time before your flight. Southwest guarantees a stress-free travel experience with their liberal baggage policy and simple boarding procedure. Southwest at LAS Terminal 1 is a popular option for many travelers since it makes flying easy, convenient, and comfortable, whether you're going to Las Vegas for a vacation or taking a journey home.