Great game but Im stuck...

Can someone help me please? Im at 79% completion in the game, and after talking to the priest in the church, it says I need to go to Spain. However, when I go to the airport to select my destination, the Spain flag is colored in grey and I cant click on it, so Im basically stuck at this place in the game. Did I do something wrong?

08ovie08 about Broken Sword 1: Director's Cut, v1.3