My son's UK citizenship came through today, we're not applying for his UK passport from here (Bolivia) instead we're travelling to the Republic on his Bolivian passport and then we'll drive to Northern Ireland and apply for it when we get there.
We're now looking for flights, and there are no direct flights from anywhere in South America to Dublin. Therefore we're looking at a stopover in Spain.
My question is twofold: firstly Iberia have a flight all under them, which goes through Madrid, and is all within terminal 4 and 4s - would any visa be necessary in that case?
Secondly, if we were to change airlines, and therefore change terminals (from 4S to 2, in case it matters) would we need a schengen visa for that?
I know that Bolivia is NOT on the list of countries that need a transit visa, but as to whether this would be considered transit I'm super confused and the information is mixed online.
Thank you all!