Can I leave the airport on a layover in Cozumel?

We build the five-hour floor from the terminal outward. International arrivals at CZM usually clear immigration and customs in 20 to 45 minutes, though Saturdays run longer when several US flights land within the same hour. Customs ends at Mexico's red-or-green traffic-light button, and a red light might add 10 minutes of bag inspection. The taxi to San Miguel takes about 10 minutes each way, and airlines generally want you back at CZM 2 hours before an international departure, which leaves about two hours in town. Street taxis can't pick up at the terminal, so you buy a ticket for the shared van or a private taxi at the counter past customs. Fares currently run 150 to 300 pesos, about US$8 to US$16 at 18.48 pesos to the dollar, but check the posted rate before paying. Going back, any taxi on Avenida Rafael E. Melgar will take you to the airport at a set zone fare. Ask the price before the door shuts. Ride-hail apps aren't a dependable option on Cozumel at the moment.

With two hours, stay in San Miguel. The Malecón runs along Avenida Rafael E. Melgar, and in the late afternoon the breeze off the Cozumel Channel cuts the humidity, with grilled corn from the carts near Parque Benito Juárez scenting the air. The Museo de la Isla de Cozumel is on the same seafront: its two floors cover the reef and the island's Maya past, and the upstairs café terrace has long been a calm table for one facing the water. For food, the taquería counters on 5a Avenida Sur seat solo diners without fuss. A plate of al pastor with a cold, tart agua de jamaica usually costs well under 150 pesos. We'd skip the jewelry shops near the cruise piers south of town. On ship days the staff there work the pavement hard.

Seven hours or more opens the island up properly. San Gervasio, the island's largest Maya site, sits about 25 minutes from the airport along the Carretera Transversal. It was a pilgrimage shrine to the goddess Ixchel, and by 11 am the limestone paths are hot and loud with cicadas, so go early. Chen Rio, on the east coast, is 35 to 40 minutes away, and it's the one cove on that shore where a rock barrier usually calms the surf enough to swim. The trade-off is real: most of the east coast has no lifeguards, phone signal is patchy, and few taxis pass, so book your driver to wait or to come back at a set hour. Punta Sur is a 45-minute drive, plus time in the park for the Caracol shrine and the Celarain lighthouse, and we'd cut it from anything shorter than a full day. Snorkeling in Arrecifes de Cozumel National Park is fine before a flight. Scuba is not, because dive operators follow guidance of 12 to 18 hours between your last dive and takeoff.

On solo safety Cozumel scores 8.2/10 (see the TTDI Solo-Safety Index). In San Miguel the rating holds up after dark along the lit Malecón and around Parque Benito Juárez, where local families stay out past 10 pm on weekends. On Cozumel the risks worth naming are traffic and the road more than crime: scooters and rented jeeps crowd Avenida Rafael E. Melgar, and the Carretera Costera on the east side has no streetlights. Be back on the west side by sunset, between about 6 and 7:15 pm depending on the season. Bags left on the sand at east-coast beaches like Chen Rio do go missing, so swim with your phone in a pouch. Carry pesos in small notes, because some drivers say they have no change for a 500. If you'd like company, a small-group snorkel boat from the downtown piers takes six to ten travellers and has you back by early afternoon. Don't count on a left-luggage desk at a terminal as small as CZM, so leave the airport with carry-on only.