Terminal 1
The terminal with the longest carrier list by the official count — 14 airlines including Turkish Airlines, LOT, TUI fly and Smartwings — handling both departures and arrivals. Its check-in counters are numbered in the 100s (counter 125 is a Terminal 1 example the airport itself gives).
Monitors at the Terminal 1 and Terminal 3 entrances, and at the S-Bahn entrances, show which terminal your flight checks in at; every level of the airport is directly connected to the others.
All levels are directly connected to each other — the information desk in Terminal 3 (Departures level) can also help if a monitor is not in view.
Taxis stop directly in front of Terminal 1, Arrivals Level 2. A free change machine for luggage-trolley deposits stands in front of Terminal 1, Departures level.