Many travellers book a combined minibus/ferry transfer to Ko Bulon via Pakbara Pier from Trang or Hat Yai, departing both cities at 09:00 for 600 baht in high season. Otherwise you could take a public minibus from Hat Yai’s Talad Kaset Station to Pakbara and buy a boat ticket there. Pakbara cannot be reached directly by public transport from Trang, but you could catch a Satun-bound minibus and ask to get out in La-Ngu for a transfer to a Pakbara-bound songthaew.
Longtail boats come out to meet the speedboats when they arrive at Bulon and transfer passengers to the main northeast coast beach near Bulone and Pansand resorts for 50 baht per head. This is an important source of income for the Chao Lae boatmen and is not negotiable.
To/from the mainland
In high season (November to April), a daily speedboat departs Pakbara at 12:00 for 400 baht and takes at least a half-hour. Tickets can be purchased from any travel agent near the pier. From Bulon, the boat returns to Pakbara at 09:00 and most resorts can arrange tickets; the counter at Bulone Resort is a reliable source. Once in Pakbara you can catch a public or tourist minibus to Hat Yai, or a tourist minibus to Trang, Krabi, Phuket or Surat Thani.
No public boats run to Bulon in low season; a private longtail boat transfer to/from Pakbara will cost around 1,500 baht for the boat, not per person.
To/from other islands
From October 20 to March 31, speedboats connect Ko Bulon directly to a number of other islands. Tickets can be booked through most resorts; whoever sells you the ticket will need to call ahead and tell the boat to stop here, so do give prior notice.
Heading north, speedboats pick up on Bulon at 10:00 and reach Ko Kradan at 10:45 for 900 baht; Ko Muk at 11:00 for 900 baht; Ko Ngai at 11:30 for 1,050 baht; Ko Lanta at 12:00 for 1,600 baht; Ko Phi Phi at 13:30 for 1,500 baht; and Phuket at 14:30 for 1,800 baht. Heading south, speedboats pick up at 12:30 and arrive at Ko Lipe an hour later. To reach Langkawi, you could transfer on Lipe or head to Pakbara and then Satun for cheaper ferries.
Speedboats depart for Bulon from Phuket at 08:30; Ko Lipe at 09:00; Ko Phi Phi at 09:30; Ko Lanta at 10:30; Ko Ngai at 11:00; Ko Muk at 11:30; and Ko Kradan at 11:45—at least in theory, as these boats often run late.
Expect to pay 1,800 baht for a private one-way transfer from Bulon to Ko Tarutao, and 3,500 baht to Ko Lao Liang or Ko Sukorn. Note that prices will likely be higher if heading to Bulon from any of these islands.