The next airport is located in İzmir (150 km).

During the season every hour is leaving from the bus station to Ayvalık.

Another option is: You can fly to Lesvos (Greek İsland) and catch the ferry to Ayvalık. During the summer time there are daily ferries between Ayvalik and Lesvos

İf you are comming from İstanbul:
Many bus companies like Koc and Varan are offering bus lines from İstanbul to Ayvalık.

New: ATLAS Jet is flying to Edremit. From Edremit is is only 45 km to Ayvalik.