Karlsruhe ▸ Constanţa
Constanţa ▸ Karlsruhe ⇄4 a weekfastest 34h30☾ 1 overnight busFlixBus🇩🇪 Germany → 🇷🇴 Romania
Direct buses · no change
KarlsruheStuttgartUlmMunichViennaBudapestConstanţa· 1,630 km as the crow flies
- 09:10 → 20:40+1FlixBus 1923 ☾ OvernightKarlsruhe central train station → Constanța (Autogara Sud Herli-Sof) · via Stuttgart, Ulm, Munich, Vienna…34h3015 stopsRuns: Mon, Tue, Thu, SatBook on FlixBus ↗
Local times at each stop. Times from official open data: FlixBus (file of 8 Nov 2026). Checked Sun 15 Nov 2026; they cover 15 Nov to 12 Dec 2026. Timetables change, so check with the operator before you travel. A bus from a company that publishes no open timetable may be missing. Contains FlixBus timetable data (FlixMobility, transport.data.gouv.fr), ODbL 1.0. How we build this.
Quick answers
Is there a direct bus from Karlsruhe to Constanţa?
Yes. 4 a week on average, with FlixBus, no change of bus (15 Nov to 12 Dec 2026).
How long is the bus from Karlsruhe to Constanţa?
The fastest takes 34h30; the slowest 34h30, for 1,630 km as the crow flies.
Is there a night bus from Karlsruhe to Constanţa?
Yes: 1 overnight departure in the timetable, for example 09:10 arriving 20:40 the next morning.