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Thailand Frontier
Bophut beach on the north coast of Koh Samui, with longtails and the hills behind

Phuket to Koh Samui

Fly if the budget allows. This is a crossing between two coasts, not a hop along one, and the overland route spends most of a day getting to a pier on the far side of the peninsula.

Phuket Koh Samui
By air: the line is the first option in the table below

Flight

Time
55m to 1h
How often
Around 56 departures a week
From
Not published

Bangkok Airways is the only carrier flying it non-stop, and it owns Samui airport, which is why the fare is what it is.

Bus and ferry

Time
6h to 10h all in
How often
Daily, sold as a single through ticket
From
Not published

Seven to eight hours by coach to Donsak on the Gulf side, then 45 minutes to 2 hours on the ferry depending on the operator.

The season changes this. The two coasts do not share a season. Phuket's wettest months are the Gulf's driest, so a crossing in October can mean leaving rain and arriving in more of it: November is the Gulf's wettest month by a distance.

Unless a route says otherwise, these times and fares come from booking agents and route aggregators, not from operator timetables. Most Thai ferry and minivan operators publish no English schedule. Treat every figure as a planning range and confirm it before you build a day around it. Last read on 20 August 2026, from FlightsFrom and 12Go.

Both ends of this route

Every route we have checked