There are no direct flights Zaragoza Bilbao however transfer options do exist. The easiest way to fly to Bilbao is to transfer in Madrid. The total travel time is approximately 1h45m, not including the transfer time, with Iberia. There may be a significant layover time in Madrid, as there are a limited amount of flights Zaragoza to Madrid.
Air Europa Lineas Aereas also has a flight that has a transfer in San Clemente. Flying Zaragoza to Bilbao this way lasts about 2h30m, not including the transfer time.
Check out the page on Zaragoza Airport
There are two trains that travel daily from Zaragoza Delicias to Bilbao-Abando. Each costs around 31E one-way or 49,45E return and the trips last approximately 4h15m.
Discounted tickets for trains Zaragoza Bilbao are available from the Spanish rail authority, in English, by simply using their website between 30 - 15 days prior to travel here
More on Zaragoza trains
All coaches are operated by the Spanish coach company ALSA and there is no competition on this route.
There are 6 buses operating between Zaragoza and Bilbao daily, as well as one supra+ bus. The regular buses cost 19,88E one-way and 37,77E round trip, each trip lasting approximately 4 hours.
The supra+ trip lasts only 3h15m, but costs a little bit more at 34,15E one-way and 64,88E return.
Tickets for the bus Zaragoza to Bilbao can be purchased online in advance Here
Return from Zaragoza Bilbao to Zaragoza Spain
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