Constanţa ▸ Istanbul
Istanbul ▸ Constanţa ⇄1 a dayfastest 10h15☾ 1 overnight busFlixBus🇷🇴 Romania → 🇹🇷 Türkiye
Direct buses · no change
ConstanţaIstanbul· 353 km as the crow flies
- 19:00 → 06:15+1FlixBus 1998 ☾ OvernightConstanța (Autogara Sud Herli-Sof) → İstanbul Esenler bus station10h15nonstopRuns: DailyThe night the clocks change (Sun 18 Oct: 19:00 → 05:15+1; Mon 19 Oct: 19:00 → 05:15+1; Tue 20 Oct: 19:00 → 05:15+1; Wed 21 Oct: 19:00 → 05:15+1; Thu 22 Oct: 19:00 → 05:15+1; Fri 23 Oct: 19:00 → 05:15+1; Sat 24 Oct: 19:00 → 05:15+1)Book on FlixBus ↗
Local times at each stop. Times from official open data: FlixBus (file of 11 Oct 2026) and FlixBus Türkiye (file of 11 Oct 2026). Checked Sun 18 Oct 2026; they cover 18 Oct to 14 Nov 2026. Timetables change, so check with the operator before you travel. Contains FlixBus timetable data (FlixMobility, transport.data.gouv.fr), ODbL 1.0. How we build this.
Quick answers
Is there a direct bus from Constanţa to Istanbul?
Yes. 1 a day on average, with FlixBus, no change of bus (18 Oct to 14 Nov 2026).
How long is the bus from Constanţa to Istanbul?
The fastest takes 10h15; the slowest 10h15, for 353 km as the crow flies.
Is there a night bus from Constanţa to Istanbul?
Yes: 1 overnight departure in the timetable, for example 19:00 arriving 06:15 the next morning.