For arrivals after 7 September 2026, there is an important change: during the Stammstrecke works, CAT temporarily operates with premium coaches rather than trains between the airport and Wien Mitte. S7 is the value choice for many travellers; Railjet is the better fit for Hauptbahnhof; CAT makes sense when frequent direct service to Wien Mitte matters more than price.
Quick decision
ServiceBest forPublished timeFare / featureS7Wien Mitte and line stopsabout 25 minfrom €4.10 according to Vienna AirportRailjetHauptbahnhofabout 15 minfrom €4.10 according to Vienna AirportCAT busdirect Wien Mitteabout 21 min scheduled€14.90; up to five departures/hour
What changed in September 2026
From 7 September 2026 until the end of October 2027, works close the rail section between Wien Mitte and Rennweg. CAT continues with premium coaches. The operator advertises roughly 12-minute intervals between 07:00 and 19:00 and 15-minute intervals off-peak.
This changes the trade-off: CAT is now primarily a direct, frequent premium service rather than a premium rail alternative insulated from road traffic.
S7: the value choice
Vienna Airport describes S7 as the cost-effective rail connection. Its published journey time to Wien Mitte is about 25 minutes, normally every 30 minutes with additional peak services. The airport lists fares from €4.10 to Wien Mitte or Hauptbahnhof, including travel on Vienna's public transport network.
If your hotel is near Wien Mitte, Landstraße, Praterstern or another convenient S-Bahn stop, S7 is usually the best-value default. Check the exact ÖBB/Wiener Linien fare before travel.
Railjet: fastest to Hauptbahnhof
For Hauptbahnhof, Belvedere and the southern side of central Vienna, Railjet is often the smarter choice. Vienna Airport publishes about 15 minutes to Hauptbahnhof and roughly 30-minute intervals. U1 then links directly to Stephansplatz.
Useful rule: choose by your hotel's actual location, not the phrase “city centre”: Wien Mitte → S7/CAT; Hauptbahnhof → Railjet.
When the CAT bus is worth it
CAT lists €14.90 one-way and €24.90 return, with discounts for eligible card holders. The service runs non-stop to Wien Mitte and advertises about 21 minutes scheduled time with up to five departures per hour during the main daytime period.
It makes sense when Wien Mitte is exactly where you need to be. Because it is currently road-based, journey time can be more traffic-sensitive than a rail connection.
City Check-in
Vienna Airport continues to describe City Check-in at Wien Mitte for CAT passengers on participating airlines. If this matters, check the current airline list and time limits immediately before travel.
Choose in 30 seconds
- Hotel near Wien Mitte: S7 for value; CAT for more frequent direct departures.
- Hotel near Hauptbahnhof: Railjet.
- Tight budget: start with S7/Railjet.
- Lots of luggage: favour the direct link to the hub nearest your hotel.
- Rush hour: rail is less exposed to road congestion than the temporary CAT coach.
Verdict
S7 wins on price, Railjet on speed to Hauptbahnhof, and the temporary CAT bus on frequency and directness to Wien Mitte. The best option is the one that leaves you with the fewest awkward transfers to your actual hotel.
Sources checked 10 September 2026: Vienna Airport, City Airport Train and ÖBB. Recheck live schedules on your travel day.
