Spain's networks — Movistar, Orange, Vodafone Spain, and Yoigo — cover the mainland, Balearics, and Canaries with strong 4G/LTE and 5G in Madrid, Barcelona, Valencia, Seville, and most coastal cities. A Spain eSIM activates on arrival at Madrid-Barajas, Barcelona-El Prat, or Palma de Mallorca and keeps you online through siesta-hour Wi-Fi dead zones, tapas-bar hopping, and high-speed AVE rail between cities. Regional plans often include roaming across the EU at no additional cost.
Best time to visit: April–June and September–October
AskHeidi eSIMs in Spain connect to Guay Mobile via the Airalo Partners Network. The specific carrier is shown on each plan below.

Three steps. No store. No swapping.
“Used it in Japan for 2 weeks. Setup took literally 1 minute. Flawless 4G the entire trip.”
“Way cheaper than my carrier's roaming pass. Paid $12 for my whole Europe trip. Speeds were top tier.”
“Scanned the QR code at the airport, connected before I even got through customs. Magic.”