Bangkok departure terminals
The Transport Company lists Bangkok–Phuket as an authorised interprovincial route and currently publishes services through Mo Chit 2 and the Southern Bus Terminal. Operators and stopping patterns vary, so use the booking record—not the route name alone—to confirm where you board.
Do not preserve an old fare or departure time from a guide. Search the official booking system for your date, then compare the journey with a flight once airport transfers and luggage are included.