Getting to Saint Martins Island is a three-step process. First you'll need to fly or bus it down to Cox's Bazar, and then catch a bus to Teknaf, which is right on the very southern tip of Bangladesh, sandwiched up against Myanmar. From Teknaf, ferries run daily and take around 3 hours. The total distance from Dhaka to the island is 510 km.
Ferries leave the island around 3PM.'Keari Sindbad ferry and you don't have a roundtrip ticket you can book the return leg at the Keari Marzaan restaurant +88 01727 266077, 0181 6820971, just before Saint Martin's Resort, off the main road. The restaurant itself only caters to daytrippers on tours arranged by Keari Tours. The one-way fare is Tk 225. the website address is (http://www.tourismkeari.com). you can find all services by Keari here.L.C.T KUTUBDIA one of largest,safest & comfortable ship on this route.It's also Only Ocean going ship on this route .It's passenger capacity is 450 persons.Contact person: Russell.Cell: +8801727368589, +8801733900400.