Regional Express

30 minutes from Aachen Hbf puts you on a Regional Express

Aachen-Merzbrück (Main terminal) is pure general aviation, so the real “transfer” happens once you grab a taxi or local bus to Aachen Hauptbahnhof and jump on a Regional Express (RE) or Regionalbahn (RB) train. From Aachen Hbf, RE trains run straight toward Cologne Hbf in about 30–40 minutes, then onward options fan out toward Düsseldorf Hbf and into Belgium via Liège-Guillemins on the same regional network.

Typical RE journey time from Aachen Hbf to Cologne Hbf sits around the 30-minute mark on faster runs, with RB stopping services adding 10–15 minutes. You’re swapping a small airfield apron for a full rail hub with direct regional links, so it’s the logical step if you’ve arrived on a club flight at AAH and want to push on to cities like Cologne (60+ km away) or Düsseldorf (90+ km away) without touching a commercial terminal.

Tickets for RE and RB services out of Aachen Hbf run under €20 one-way to Cologne in standard second class, depending on VRR/NRW day passes and advance purchase. You can buy at the yellow DB ticket machines on the main concourse, at staffed counters during station hours, or in the DB Navigator app before you even leave the Main terminal at AAH, as long as you know your planned departure hour from Aachen Hbf.

Frequency on the Aachen–Cologne route lands roughly in the 20–30 minute range during daytime, with service thinning later in the evening after around 21:00. RE and RB trains share platforms at Aachen Hbf, so check the board for RE1, RE9, or similar designations and confirm “Köln Hbf” on the departure screen before boarding; platform changes are common on tracks 6–9.

There’s no check-in for any Regional Express or Regionalbahn service out of Aachen Hbf, but conductors do spot-check tickets once per ride, often within the first 10–15 minutes after departure. Validate any paper regional pass in the small blue machines near the stairs to platforms 1–9 before boarding, or you risk a roughly €60 on-the-spot penalty fare if caught without a correctly stamped ticket.

Practical tip: Build a 45–60 minute buffer between your AAH arrival at Main and your RE departure from Aachen Hbf to cover the 10–20 minute taxi or bus ride plus any ticket machine queues at the station.