On 10 March 1891, the government granted Manuel Lecanda the concession for building a railway between Lutxana (a neighborhood of Erandio) and Mungia.

The Lutxana terminus served as an interchange with the Bilbao–Plentzia railway (nowadays part of line 1 of the metro).

[3] An extension from Mungia to Bermeo was studied, but wasn't carried out due to the high costs involved.

The new alignment was short lived, as on 11 May 1975 the line was closed between Sondika and Mungia due to another expansion of the airport.

As a result, trains on the Txorierri line had to be provisionally rerouted from Lutxana to Lezama from November 2015 to April 2017.

Operated by Euskotren, it provides an hourly service from Lutxana to Sondika with an intermediate stop at Zangroiz.

[8] During the previous two years, trains had run from Sondika to Lutxana to provide a connection to the metro.