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Date Published: 23/06/2026

Six beautiful Spanish islands you can visit this summer without catching a flight

From Murcia to Galicia, these island getaways offer crystal-clear waters, history and spectacular scenery

Isla del Fraile / Wikipedia

When people think of island holidays in Spain, the Balearics and Canaries usually come to mind first. But if you're looking for a summer adventure without booking a flight, there are plenty of lesser-known islands dotted around the Spanish coastline that are well worth discovering.

From tiny volcanic outcrops to wildlife-rich nature reserves, these islands offer beautiful scenery, fascinating history and, in many cases, far fewer crowds than some of Spain's most famous tourist hotspots.

Isla del Fraile, Murcia

Wikipedia

Just off the coast of Águilas sits Isla del Fraile, a small island that has become a favourite with kayakers, snorkellers and diving enthusiasts.

Although there are no regular ferry services, it's easy enough to reach by kayak or small boat from nearby beaches. Beneath the surface, visitors can explore marine life and even discover submerged Roman remains, making it one of the most interesting snorkelling spots on the Murcia coastline.

Pedrosa Island, Cantabria

Hospital de la Isla Pedrosa / Vanbasten 23 / Wikimedia Commons

Pedrosa Island offers something unusual among Spanish islands: you don't need a boat to get there.

Located in Santander Bay, it's connected to the mainland by a bridge from Pontejos, allowing visitors to walk straight onto the island. Peaceful woodland paths and coastal views make it an ideal place for a relaxing stroll.

The island is also known for a former sanatorium that once operated there, adding a touch of local history to the visit.

Sálvora Island, Galicia

Wikipedia

Part of Galicia's spectacular Atlantic Islands National Park, Sálvora remains one of the area's best-kept secrets.

Unlike some of Spain's busier island destinations, Sálvora has retained a wild and untouched feel. Visitors can explore the remains of an old settlement and a historic fish-salting factory, offering a glimpse into the island's past.

Access is strictly controlled to protect the environment, with a limited number of visitors allowed each day via authorised excursions from O Grove and Ribeira.

Sancti Petri Islet, Cádiz

Turismo de Cádiz

Sitting just off the coast of Cádiz, the tiny islet of Sancti Petri is famous for its historic castle.

The fortress dates back to the 16th century and stands on a site believed to have once housed the legendary Temple of Hercules. Visitors can reach the island by boat or kayak from Novo Sancti Petri and enjoy stunning views across the coastline.

Columbretes Islands, Castellón

Castellón Turismo

The Columbretes Islands are one of the Mediterranean's most protected natural treasures.

Formed by ancient volcanic activity, the archipelago is known for its crystal-clear waters, abundant wildlife and dramatic landscapes. Visitor numbers are tightly controlled and access is generally limited to Illa Grossa through organised excursions.

Guided visits, snorkelling opportunities and a historic lighthouse make this a memorable destination for nature lovers.

Cortegada Island, Galicia

Turismo de Galicia

Located in the Arousa estuary, Cortegada is home to one of Europe's largest laurel forests.

The island forms part of the Atlantic Islands National Park and can only be visited through authorised transport operators. Its lush vegetation and peaceful atmosphere make it one of Galicia's most unique natural spaces.

One of its most fascinating features appears when the tide is low, revealing an ancient route that has connected the island with the mainland for generations.

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