Playa del Carmen is served by Cozumel Airport though some fly to Cancun Airport and get a bus to the resort.
Shuttle buses are available at restricted times between the airport and the resort (yes, Cozumel is an island off the coast of Playa del Carmenâ¦ there is a bridge).
A wider selection of flights is available to Cancun Airport from where shuttle buses, taxis and hire cars are available. Transfer time is around 45 minutes.