The easiest and most popular island to reach from Barcelona in 2026 is Mallorca, the largest of the Balearic Islands. For those prioritizing speed, a flight from Barcelona-El Prat (BCN) to Palma de Mallorca (PMI) takes only about 50 to 55 minutes, with dozens of daily departures on carriers like Vueling, Ryanair, and Air Europa. If you prefer the sea, high-speed ferries can get you to the port of Alcúdia in roughly 3.5 hours, while the standard ferry to the capital, Palma, takes about 7 hours (often run as a convenient overnight route). Mallorca offers a diverse landscape of sandy beaches, the rugged Serra de Tramuntana mountains, and a vibrant urban culture in Palma. While Menorca and Ibiza are also accessible, Mallorca’s sheer volume of transport options makes it the most seamless "island escape" for travelers starting in Barcelona.