Walk times are estimates from the distance, allowing for streets. Leave a little extra time.
Tight transfer · The 21:37 trip leaves only 7 min to change from Kirchberg, Rout Bréck - Pafendall (Bus) to Pfaffenthal-Kirchberg, Gare (4 min walk); a delay could make you miss line RE.Crossing the border · Free travel stops at the border. For trips to or from Belgium, France or Germany you need a ticket for the part outside Luxembourg.