Sevilla are within touching distance of a first Copa del Rey crown since 2010 after ending Leganes' dream run.
Joaquin Correa and Franco Vazquez were on target as Sevilla beat Leganes 3-1 on aggregate to earn a place in the final of the Copa del Rey.
The tie was all square after the semi-final first leg in Madrid but Vincenzo Montella's men dominated Wednesday's return fixture, winning 2-0 at the Ramon Sanchez Pizjuan.
Correa's goal in the 15th minute was key, with Leganes - who stunningly knocked out Real Madrid in the quarter-finals - unable to muster much of a response, as Sevilla's progression always looked likely.