The Check-In at the City Air Terminal Wien Mitte is open daily from 5:00 am to 11:00 pm for all Star Alliance flights (Austrian Airlines Group, Lufthansa, etc.) from 24 hours to 75 minutes before departure. The detailed check-in times can be ascertained by the customer service of the individual airlines.
For all flights of NIKI, Air Berlin, and Transaero, check-in at City Air Terminal Wien Mitte is possible from 5:00 am to 9:00 pm, check-in the night before from 6:00 to 9:00 pm.
Four staffed check-in counters are at your disposal. If the airline of your choice participates in the program at City Air Terminal, you can already check in your luggage by showing a valid CAT ticket and receive your boarding pass.
At this date, you can check in at City Airport Terminal Wien-Mitte with the
following airlines

City Airport Train
Terminal Wien Mitte
Underground U3, U4, City train S-Bahn: Landstrasse/Wien Mitte
3., Invalidenstraße / Marxer Brücke
City Air Terminal >
Vienna International Airport
daily from 5:38am through 11:38pm
Vienna International Airport >
City Air Terminal
daily from 6:05am through 0:05am

www.cityairporttrain.com