Thanks to a thrilling extra-time victory at Athletic Bilbao, Osasuna made it to the Copa del Rey final for just the second time in their history.
Due to their 1-0 victory at home, Pamplona had the advantage going into the second leg.
In the first half, a close-range goal by Inaki Williams tied the game.
In the fourth minute of extra time, Pablo Ibanez scored his first goal as a senior with an outstanding 18-yard volley.
Osasuna has never taken home a significant prize, though they came close in the 2004–2005 Copa del Rey final against Real Betis.
Yet Barcelona or Real Madrid will stand in their way in the championship game. Going into Wednesday’s second leg, Barca is up 1-0.
