Can I buy a bus ticket from Castro-Urdiales to Altsasu / Alsasua on Sarebus?

No. Sarebus brings together timetables from the operators on the Castro-Urdiales to Altsasu / Alsasua route. When you use search, you get a link to buy your ticket securely on the operator's website.

Are there direct buses between Castro-Urdiales and Altsasu / Alsasua?

No direct service is listed on typical operating days. Sarebus shows one-transfer options; use search to see the connection point and each leg's times.

Where can I check bus times from Castro-Urdiales to Altsasu / Alsasua?

On Sarebus you will find up-to-date timetables from the operators serving Castro-Urdiales to Altsasu / Alsasua, so you can compare options before you travel.

How early should I arrive at the station?

With an online ticket, aim to arrive about 15 minutes before departure. If you prefer more margin, allow about 30 minutes. Find the stop on the Sarebus itinerary and allow extra time.

Do timetables change at weekends?

Yes. Times can vary by weekday, season or demand. On busy dates operators often add extra departures. Always check your travel date.

This page lists the operators on the route, available times, typical duration, stops, whether the service is direct or involves a transfer, and the link to buy on the operator's website.

Buses and schedules forCastro-Urdiales to Altsasu

Trip information

Average on days with service

Duration: ~125 min
Buses per day: 43
First bus: 06:00
Last bus: 19:30

Stations

Castro-Urdiales
Castro-Urdiales bus stop
Altsasu
Altsasu / Alsasua bus stop

Typical schedules

Departure	Arrival	Stop	Operator
06:00	06:35	Estación de Autobuses de Castro Urdiales	IRB Castro
07:00	08:15	Bilbo / Bilbao (Intermodal)	Alavabus · 135 min
07:00	07:35	Estación de Autobuses de Castro Urdiales	IRB Castro
08:00	09:15	Bilbo / Bilbao (Intermodal)	Alavabus · 135 min
07:30	08:05	Estación de Autobuses de Castro Urdiales	IRB Castro
09:00	10:15	Bilbo / Bilbao (Intermodal)	Alavabus · 165 min
08:00	08:35	Estación de Autobuses de Castro Urdiales	IRB Castro
09:00	10:15	Bilbo / Bilbao (Intermodal)	Alavabus · 135 min
09:00	09:35	Estación de Autobuses de Castro Urdiales	IRB Castro
10:30	11:45	Bilbo / Bilbao (Intermodal)	Alavabus · 165 min
09:00	09:35	Estación de Autobuses de Castro Urdiales	IRB Castro
10:00	11:15	Bilbo / Bilbao (Intermodal)	Alavabus · 135 min
09:15	09:50	Estación de Autobuses de Castro Urdiales	IRB Castro
10:30	11:45	Bilbo / Bilbao (Intermodal)	Alavabus · 150 min
09:30	10:05	Estación de Autobuses de Castro Urdiales	IRB Castro
10:30	11:45	Bilbo / Bilbao (Intermodal)	Alavabus · 135 min
10:00	10:35	Estación de Autobuses de Castro Urdiales	IRB Castro
11:30	12:45	Bilbo / Bilbao (Intermodal)	Alavabus · 165 min
10:30	11:05	Estación de Autobuses de Castro Urdiales	IRB Castro
11:30	12:45	Bilbo / Bilbao (Intermodal)	Alavabus · 135 min
10:30	11:05	Estación de Autobuses de Castro Urdiales	IRB Castro
12:00	13:15	Bilbo / Bilbao (Intermodal)	Alavabus · 165 min
11:00	11:35	Estación de Autobuses de Castro Urdiales	IRB Castro
12:00	13:15	Bilbo / Bilbao (Intermodal)	Alavabus · 135 min

View schedules tomorrow View reverse route

Operators on Castro-Urdiales to Altsasu

Information

There is no direct bus from Castro-Urdiales to Altsasu / Alsasua on typical operating days. Practical options combine two legs with a transfer. Most connections are at Bilbo / Bilbao (Intermodal).

Compare itineraries on Sarebus and book on each operator's site. See sample departures below or search another date.

Other routes from Castro-Urdiales

Bus routes to Castro-Urdiales

Frequently asked questions about Castro-Urdiales–Altsasu

No. Sarebus brings together timetables from the operators on the Castro-Urdiales to Altsasu / Alsasua route. When you use search, you get a link to buy your ticket securely on the operator's website.