Turkey
Istanbul (Bostancı / Yenikapı) → Avşa Island
Avşa is Istanbul’s favourite quick-escape island in the southern Sea of Marmara, known for its beaches and local wine. İDO’s sea bus runs direct from Bostancı and Yenikapı, calling at Marmara Island on the way.
Istanbul (Bostancı / Yenikapı) to Avşa Island ferry at a glance
The ferry from Istanbul (Bostancı / Yenikapı) to Avşa Island takes 4h – 4h 05m (via Yenikapı and Marmara Island) across the Sea of Marmara, operated by İDO. It is a foot-passenger service; vehicles are not carried. Typical frequency: weekend service in autumn 2026: Friday evening and Saturday morning to Avşa, Saturday and Sunday afternoons back.
Crossing times and frequencies are typical figures and vary by season. Confirm the current timetable with the operator or booking partner before you travel. Route facts last reviewed 2026-09-29.
Sources: ido.com.tr · How we verify
Return crossing: Avşa Island to Istanbul (Bostancı / Yenikapı)
İDO also sails Avşa Island to Istanbul (Bostancı / Yenikapı), taking 4h – 4h 05m (via Yenikapı and Marmara Island).
Istanbul (Bostancı / Yenikapı) to Avşa Island ferry timetable & sailing pattern
October 2026: Fridays 18:30 and Saturdays 08:30 from Bostancı; Saturdays and Sundays 16:00 from Avşa
Reduced to weekends outside summer; check İDO for the summer timetable.
Published departure times
- Bostancı Fri 18:30
- Bostancı Sat 08:30
- Avşa Sat/Sun 16:00
Timetables change by season and date. Check exact departures for your travel date on the official timetable.
Official İDO timetable →Check prices & book on Direct Ferries →Source: İDO voyage times (1–28 October 2026). Verified 2026-09-29.
Maritime Crossing Route Map
Interactive sea passage between Istanbul (Bostancı / Yenikapı) and Avşa Island
Ready to cross from Istanbul (Bostancı / Yenikapı) to Avşa Island?
Book your crossing with Direct Ferries: live fares, availability and sailing times.
Operators on This Route
| Operator | Crossing Time | Vessels |
|---|---|---|
| İDO | 4h – 4h 05m | Sea bus (passenger catamaran) |
Route Features
Vehicles
Foot passengers only
Foot Passengers
Walk-on passengers welcome
Pets
No pet facilities
Distance
77 nautical miles
Getting There & Onward Transport
- The İDO sea bus route is Bostancı – Yenikapı – Marmara – Avşa
- GESTAŞ car ferries link Avşa and Marmara Island with Erdek on the mainland every day