10 hours 42 minutes to 14 hours 18 minutes (Approx.)
Travel stress-free from Bangkok to Koh Samui on an air-conditioned coach and high-speed catamaran. Choose between morning and evening departures from Bangkok’s centrally-located Khao San Road; 11 hours later, you’ll step onto Na Phra Lan Pier at Koh Samui. Escape to one of Thailand’s most vibrant islands, and enjoy the convenience of a scheduled transfer.
Travel by boat and see the sights from the water
Day trip (destination A to B)
Choice of several departures throughout the day
Qualified and professional pilot
Pickup from a centrally located meeting point
All taxes, fuel surcharges and service fees included
This gets 3 stars because I got to my destination safely with few complications. However, I would not recommend this as a method from getting from Bangkok to Koh Samui and I would never do it again. You start at 5:20 in the morning and are shuffled onto a big bus about two blocks from the travel agency office (there isn't really a person guiding you, just pointing you in a general direction). Once you get on the "Lomprayah Coach" you barely have any room and the toilet is absolutely disgusting. Not to mention, you're stuffed on this bus for about 6 hours. From there, you wait in line to catch the ferry which is less than glamorous, and again, packed. The ferry also makes about 3 stops before reaching Koh Samui and there was a lot of waiting at each stop for passengers to get on and off. It wasn't very comfortable and by the time I reached Koh Samui I was completely exhausted. All in all, I would spend the extra $50 and fly.
The coach journey was a hard graft 7 hours none stop and my seat recliner was broken so couldn’t get comfy but a great cheap way to travel if you’re on a budget. Catamaran journey was pleasant also got to see other islands we stopped at along the way.