The airport recommends that you be in the Ticketing/Check-In area at least two hours before your departure, with international travelers allowing at least three hours. This will give you ample time to check in, pass through security screening and get to your departure gate.
For your convenience, McCarran International Airport offers a self-service check-in option, allowing you to obtain a boarding pass without having to queue at the counter.
Mobile check-in saves time at the airport by letting you check in and get your boarding pass right from your smartphone or tablet. It's the fastest, most convenient way to check in. Go fast. Go mobile.