From September 7 2026 until the end of October 2027, the City Airport Train (CAT) will operate a high-frequency premium bus service between Wien Mitte and Flughafen Wien, maintaining fast and comfortable airport transfers during a major trunk line closure.
For 14 months, rail services between Wien Mitte and Rennweg will be suspended due to extensive renovation works. In response, CAT will deploy high-quality Setra coaches in partnership with Blaguss Reisen GmbH. Each vehicle offers 55 seats with generous legroom, air conditioning and onboard infotainment, ensuring passengers continue to enjoy a premium experience despite the temporary shift from rail to road.
To support travellers during the disruption, frequency will be increased to as many as five buses per hour in each direction. Services will run every 15 minutes from early morning, stepping up to every 12 minutes (five per hour) between 7.00 am and 7.00 pm, before returning to 15-minute intervals until late evening. The final departures are at 23.15 from Wien Mitte and 23.37 from the airport.
Special fares will also apply: holders of the Wiener Linien annual pass, the ÖBB Vorteilscard or the Klimaticket can travel for €7 per direction, while children up to 15 travel free. However, CAT City Check-In facilities will be unavailable during the closure.
