When do I go through immigration in Europe from Mallorca to Frankfurt to the USA?
Upvote:1
50 minutes is not likely to be enough even if you're on the same ticket:
The non-EU passport control lines in Frankfurt are generally busy;
There are extra document checks and security check for the flights departing to the USA, and the gates on US-bound flights seem to close much earlier ("gate closed 30 minutes before departure");
Its quite a bit of walk from Schengen area to the gates where US flights depart (AFAIK a different terminal).
Finally, if you buy two separate tickets on different airlines which are not in alliance, and have luggage, you'd have a bunch of other issues, and definitely not going to make it.