Phuket to Koh Samui: bus, minivan and flight options (2026)

Flight · 55min–1h10 · ฿2,500–฿5,500

The only quick way to swap coasts. Everything else — coach across the peninsula, or a flight via Bangkok — costs a day or a connection.

Flight + Flight · 3h10–5h30 · ฿2,900–฿10,100

Phuket → Bangkok: The most competitive domestic route in the country, which is why the floor sits under ฿1,000 outside holidays. Phuket airport is 32km north of Patong — budget an hour and ฿200–800 for that transfer on top.

Bangkok → Koh Samui: Bangkok Airways owns Samui airport and runs a near-monopoly on the route, so the floor here sits where other islands' ceilings do. Flying to Surat Thani and continuing by bus and boat is the standard way around it.

Flight + Flight · 4h35–7h05 · ฿4,500–฿11,100

Phuket → Chiang Mai: Direct flights exist but are thin — a connection through Bangkok can be cheaper and is often only an hour longer overall. Check both before assuming direct wins.

Chiang Mai → Koh Samui: Samui airport is privately owned and Bangkok Airways runs almost all of it, which is why this leg costs more than a longer flight to Phuket. Flying to Surat Thani and taking the boat is routinely half the price.

Minivan + Bus + ferry (one ticket) · 8h51–13h10 · ฿980–฿2,000

Phuket → Khao Sok: The bottom of the band is a shared van, the top a private car. Most Khao Sok bookings include the transfer to the lake pier as a separate morning leg — that isn't in this fare.

Khao Sok → Koh Samui: Minivan to Donsak, then the Samui ferry. Booked as one ticket in Khao Sok village; there is no walk-up alternative if it's missed.

Bus + Bus + ferry (one ticket) · 10h15–15h20 · ฿1,100–฿2,050

Phuket → Krabi & Ao Nang: 86km by road around the bay. The bus is the one most people take; the ferry between the two takes five hours and stops at Phi Phi, so it's a sightseeing route rather than a transfer.

Krabi & Ao Nang → Koh Samui: Ferry to Donsak, coach across the peninsula, arrive Krabi in the late afternoon. It's the standard way to swap coasts without flying, and it eats a full day whichever operator sells it.

Minivan + Bus + ferry (one ticket) · 10h25–14h50 · ฿1,040–฿1,750

Phuket → Krabi & Ao Nang: Cheaper than the bus and it will pick up at hotels and the airport. The trade is the usual one: nine people, one aisle, no luggage hold.

Krabi & Ao Nang → Koh Samui: Ferry to Donsak, coach across the peninsula, arrive Krabi in the late afternoon. It's the standard way to swap coasts without flying, and it eats a full day whichever operator sells it.

Bus + Bus + ferry (one ticket) · 22h45–29h30 · ฿1,300–฿2,500

Phuket → Bangkok: Twelve to fourteen hours for a fare that a flight booked in advance regularly beats. It exists, it's cheap in the last-minute case, and almost nobody should choose it over the plane.

Bangkok → Koh Samui: Standard coaches sit at ฿600–800 and VIP at ฿900–1,100, both including the Donsak ferry. One ticket means one company owns the connection — worth more on this route than the ฿100 difference between operators.