San Sebastian to Hondarribia Bus

The E21 line carries more than 1.2 million passengers annually along the Gipuzkoan coast, making it one of the most-used interurban routes in the Basque Country. The san sebastian to hondarribia bus follows the N-1 highway through Pasaia and Lezo before reaching the medieval quarter, offering glimpses of the Bidasoa estuary and Mount Jaizkibel as it approaches the French border. Plaza Gipuzkoa sits two blocks inland from La Concha beach and serves as the regional hub for Ekialdebus services radiating east into Gipuzkoa. The boarding zone for Hondarribia-bound coaches occupies the southeast corner of the plaza, marked by digital departure boards that display real-time updates during peak hours. Buses depart at :00 and :30 past each hour from early morning until late evening, with no reduction in frequency on Sundays. The final return service from Hondarribia leaves at 22:20, allowing visitors nearly four hours in town after a midday arrival. Ticketing remains cash-and-card on board; no advance reservation or printed ticket is required for standard single journeys. Drivers issue receipts upon request and accept contactless payment in addition to euro notes and coins. The Mugi transport card, used across the Basque public network, offers a modest per-journey discount for residents and frequent travelers. Day-trippers without a Mugi card pay the standard fare, which has held steady since 2024. The route runs parallel to the coastal highway rather than the slower interior road through Errenteria, reducing travel time but limiting intermediate stops. Pasaia and Lezo each have one designated halt; passengers heading to smaller villages along the estuary will need to confirm stop availability with the driver. Hondarribia's terminus lies on Calle Zuloaga, a five-minute walk from the Charles V castle walls and the Marina district. Return buses depart from the same stop, which is clearly signed and equipped with a covered shelter and digital timetable screen. Public transit between San Sebastian and Hondarribia operates year-round without seasonal reduction, reflecting the route's role in commuter as well as leisure travel. The consistent half-hour headway gives day-trippers flexibility to explore the old town, waterfront and Playa de Hondarribia without rigid scheduling, while the 06:30 start accommodates early risers aiming to photograph the sunrise over the Bidasoa or secure morning tables at the pintxo bars along Calle San Pedro.