Originally Posted by
AlienInTheFatherland
ZRH flights arrive almost invariably at A gates and KRK departs almost invariably from C gates.
So you will have to clear security at C which is about a five minute walk (landside) from A.
Invariably? I'd say they actually very variably arrive either at A or C gates. If you arrive at Terminal C, you should be able to remain airside by following the Transfer signs.
You can immediately tell which one it is because A is the only terminal that has jet bridges. If you have to take a bus, it's C.