Plentzia is located 25 km north-east of Bilbao. It is part of the Bilbao metropolitan area, as well as being the terminus of the first line of the city's Metro. In addition to the Metro, two BizkaiBus bus routes serve the town, with further destinations served from Urduliz, the next stop on the Metro. Plentzia is approximately 30 min by car from Bilbao and Bilbao airport. Coming from Bilbao, take the BI-634 from Bilbao to Sopelana and then follow the signposts along the BI-2122 to Plentzia. From the airport, take the BI-631 as far as Mungia, and from there the BI-2120 to Plentzia.
Plentzia is a resort town with a large beach beside the Plentzia River estuary, in the round, shell-shaped Bay of Plentzia, shared with neighbouring Gorliz and Barrika. The beach is very popular as it is clean and the sea is calm due to the shelter of the bay and the town has many amenities for visitors.
Plentzia and its neighbouring municipalities are popular locations for better-off families from Bilbao to buy weekend–holiday homes and during the summer months the town's beach and bars and restaurants become much busier thanks to these residents and other visitors from Bilbao.
As in most Basque towns, Plentzia has a number of restaurants and bars ranging from small bars offering pintxos to restaurants with formal dining. There is also a small Council-run museum telling the town's history and in particular dealing with its history as a merchant marine port. The town also has an indoor municipal Jai Alai Fronton where the traditional Basque sport of pelota is played and competitive matches can often be seen.
Plentzia is the north-eastern terminus of the Line 1 of Metro Bilbao. It is located in the municipality of Plentzia, in the comarca of Mungialdea inside Bilbao metropolitan area. It is an at-grade station and its fare zone is C. It is located on the right bank Butrón-Plentzia River. It is connected to the rest of the municipality by a passenger bridge.
The section between Urduliz station and Plentzia station is linked by Metro Bilbao in five minutes, making it the longest interval between stations throughout the entire Bilbao subway network.