Hop the 30-minute fast ferry from the same harbor your ship is docked in to Formentera, then walk or rent a scooter to Playa de Ses Illetes, repeatedly voted the #1 beach in Europe. Shallow, glass-clear turquoise water and brilliant white sand inside the UNESCO-protected Ses Salines park make this the single most jaw-dropping thing within reach of the port. The 30-min crossing each way leaves 5+ hours on the island, so it fits a 6-8 hour port day with margin.
What to expect
You'll make a quick 30-minute ferry crossing from the cruise terminal to Formentera, then walk or rent a scooter to Playa de Ses Illetes—the consistently ranked #1 beach in Europe. There you'll encounter the jaw-dropping reality: shallow, glass-clear turquoise water lapping against brilliant white sand within the UNESCO-protected Ses Salines park. With 5+ hours on the island before your return ferry, you'll have genuine time to swim, sunbathe, and soak in what feels like the Spanish Caribbean without the cruise-ship crowds.
Direct wins decisively. Cruise-line Formentera catamaran/swim outings run $85-120pp; the bare ferry to the best beach in Europe is ~$50pp. You give up the open-bar boat ride, but you get the actual marquee beach for less than half the price. Buy the morning's first ferry and keep your all-aboard time in mind since this is the longest item on the list.
Good to know
Book the morning's first ferry departure (departing every ~30 minutes) and budget 1 hour total for the round-trip crossing, leaving 5–6 hours for beach time; confirm your ship's all-aboard time before committing, as this is the longest excursion window from port. Trasmapi fast-ferry tickets run ~$48–53 per adult ($27 child) foot-passenger—nearly half the price of ship-line Formentera catamaran excursions—and apply discount codes like 4MENTERA (up to 19% off) when booking online. The ferry terminal is in the same harbor as your cruise dock; bring cash or cards, reef-safe sunscreen, and water, as Ses Illetes has minimal facilities. Build in a 30–45 minute buffer before all-aboard to clear any ferry delays and walk back to your ship unrushed.