Sound risky... I remember having left one time Koh Samet at around noon. The journey to Bangkok takes normally 4h + 40 minutes boat ride. With a connecting flight to Phuket at 21:10, everything should has been fine but the bus ride to Ekkamai took more than 5 hours then the taxi ride to the airport almost 2 hours. We arrived at Air asia counter at 20:30. Hopefully, our flight was delayed (1 hour) so no need to rush... God bless Air Asia.
