Istanbul Ulasim operates a bus from Istanbul to Erdek every 5 minutes. Tickets cost $1 and the journey takes 12 min. 4 other operators also service this route.
How to get from Istanbul to Erdek
From Yenikapı car ferry to Bandırma then bus to Erdek. 4 h 33 min 89 ₺. From Aksaray Metro to Istanbul, bus to Bursa, then bus to Erdek. 5 h 58 min 87 ₺. From Aksaray Metro to Istanbul Otogari then bus to Erdek. 6 h 42 min 57 ₺.