Booking flights from US to Salzburg for RS Alpine My Way Tour. Connection will be in Frankfort. I assume we will need to clear immigration there, correct? Connecting flights to Salzburg are either a 2 hr or 5 hr layover. Wondering how much time we will need to clear immigrations and make the connection.
Return flight will be Geneva to Zurich and then on to US. Assume we will not not to clear immigration/customs since it’s a domestic flight and could do a shorter layover?
Limited experience booking international flights. Any/all suggestions appreciated!