Bangkok to Surat Thani: train, bus and flight options (2026)

8 ways to make this trip, from ฿428 one way, and 8h40–9h40 on the quickest, direct. Below: what each costs, who runs it, how often it goes and the pier or station it actually leaves from.

Fares checked 7 September 2026 and quoted as one-way bands per adult. They move with season, fuel and demand — the flight bands move fastest of all.

Our pick for time

Day train

8h40–9h40 · ฿428 · State Railway of Thailand (trains 40/41 diesel railcar)

Our pick for budget

Day train

฿428 · 8h40–9h40 · State Railway of Thailand (trains 40/41 diesel railcar)

Same option twice: on this pair the quickest way is also the cheapest, which is rarer than it sounds — it usually means one operator has the route to itself.

All options

Bangkok to Surat Thani: every option with mode, time, fare, operators and frequency
Option	Time	Fare	Operators	How often	Change
Day train	8h40–9h40	฿428	State Railway of Thailand (trains 40/41 diesel railcar)	Daily	Direct
Bus	9h–11h	฿500–฿900	Sombat Tour, Nakhon Si Bus	Evening departures from Sai Tai Mai	Direct
Sleeper train	11h–13h	฿768–฿868	State Railway of Thailand (trains 84/85)	Overnight departures from Krung Thep Aphiwat	Direct
Flight + Ferry	3h15–5h30	฿2,200–฿6,850	Bangkok Airways, Raja Ferry	Around 20 departures a day from Suvarnabhumi · Through the day from Donsak, first sailing around 05:00	via Koh Samui
Flight + Bus	5h05–8h25	฿1,100–฿3,600	Thai AirAsia, Thai Vietjet, Thai Lion Air, Bangkok Airways, Local and tourist bus operators	Roughly 15 departures a day · Through the day	via Krabi & Ao Nang
Bus + ferry (one ticket) + Ferry	12h15–17h10	฿800–฿1,350	Phantip Travel, Seatran Discovery, Raja Ferry, Nakhon Si Bus	Mostly overnight departures from Sai Tai Mai and Khao San · Through the day from Donsak, first sailing around 05:00	via Koh Samui
Bus + ferry (one ticket) + Speedboat / catamaran	15h45–20h10	฿1,650–฿2,450	Lomprayah High Speed Ferries, Seatran Discovery	One overnight combination a day, bus around 22:00 from Pinklao or Khao San · Once or twice daily, routed via Koh Phangan	via Koh Tao
Bus + ferry (one ticket) + Ferry	16h15–20h15	฿1,170–฿1,750	Lomprayah High Speed Ferries, Seatran Discovery, Raja Ferry	Overnight departures from Pinklao and Khao San · Several sailings a day from Donsak to Thong Sala	via Koh Phangan

Booking notes

Day train · 8h40–9h40 · ฿428

Air-conditioned 2nd class seats, about 9 hours in daylight. Cheaper than a sleeper but it costs a full day rather than a night.

Bus · 9h–11h · ฿500–฿900

VIP coaches sit at the top of the band. The overnight bus and the overnight train arrive within an hour or two of each other; the train has the better bed and the bus the better price.

Sleeper train · 11h–13h · ฿768–฿868

Band shown is a 2nd class air-conditioned sleeper; 1st class runs ฿1,246–1,446. The train sets down at Phunphin, 13km outside Surat Thani town, where the island bus-and-ferry connections meet it.

Flight + Ferry · 3h15–5h30 · ฿2,200–฿6,850

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.

Koh Samui → Surat Thani: ฿200 is Raja's own published passenger fare on the Donsak–Lipa Noi crossing, one of the few numbers on this page that comes straight off an operator's board. Donsak pier is 60–90 minutes by road from Surat Thani town.

Flight + Bus · 5h05–8h25 · ฿1,100–฿3,600

Bangkok → Krabi & Ao Nang: Usually a little cheaper than Phuket and much closer to Ao Nang, Railay and the Lanta and Phi Phi piers. If the Andaman islands are the plan rather than Patong, this is the better arrival.

Krabi & Ao Nang → Surat Thani: The overland link between the Gulf and Andaman coasts. Sold as part of most Samui-to-Krabi combined tickets rather than bought on its own.

Bus + ferry (one ticket) + Ferry · 12h15–17h10 · ฿800–฿1,350

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.

Bus + ferry (one ticket) + Speedboat / catamaran · 15h45–20h10 · ฿1,650–฿2,450

Bangkok → Koh Tao: The bus runs overnight to Chumphon and hands over to the 08:00 catamaran, landing on Koh Tao around 10:30 — 12 to 13 hours door to door. Lomprayah's own promoted fare for the combination was ฿850 in May 2026; the top of the band covers VIP coach seats and high season.

Koh Tao → Surat Thani: Nothing runs Surat Thani to Koh Tao directly — the boat calls at Phangan or Samui on the way, which is why the time band is so wide. Coming from Bangkok, Chumphon is the shorter door.

Bus + ferry (one ticket) + Ferry · 16h15–20h15 · ฿1,170–฿1,750

Bangkok → Koh Phangan: Two routings sell under the same name: the Chumphon catamaran down through Koh Tao, and the Surat Thani coach across to Donsak. The Chumphon version is faster and pricier; check which one the ticket actually is.

Koh Phangan → Surat Thani: ฿270 is Raja's published passenger fare for the Donsak–Thong Sala crossing. Around the Full Moon these sailings fill; book the day before rather than at the pier.

Both ends of the trip

Bangkok

The arrival point for most trips and the hub every rail and bus line runs back to.

Airport BKK / DMK: Two airports 50km apart on opposite sides of the city; a domestic connection between them needs 3 hours, not 1.

Bangkok is driest Nov–Apr and wettest May–Oct on its own monthly rain-day normals.

Bangkok weather Bangkok guide

Surat Thani

Not a destination — the mainland interchange every Gulf island ticket routes through.

Airport URT: The cheap way into the Gulf islands: low-cost flight here, then a bus-and-ferry combination to the pier.

Frequently asked questions

How long does it take to get from Bangkok to Surat Thani?

8h40–9h40 on the quickest option we hold — day train with State Railway of Thailand (trains 40/41 diesel railcar). The slowest of the 8 options here takes 16h15–20h15, so the spread between them is about 9h05. Times are for the scheduled leg and exclude the transfer at either end.

How much is Bangkok to Surat Thani?

From ฿428 one way by day train, checked 7 September 2026 — and on this pair that is also the quickest way, so there is nothing to trade off. The dearest of the 8 options here runs to ฿2,200–฿6,850. That band comes from a dated route listing rather than a published tariff, so treat it as indicative.

What else runs between Bangkok and Surat Thani?

7 other options. The next one after day train with State Railway of Thailand (trains 40/41 diesel railcar) is bus with Sombat Tour at ฿500–฿900 and 9h–11h — dearer and slower. All of them are in the table above with their operators and frequency.

Where does the Bangkok to Surat Thani service leave from, and how often does it run?

Air-conditioned 2nd class seats, about 9 hours in daylight. Cheaper than a sleeper but it costs a full day rather than a night. Daily.

Going the other way, or further

The return trip is on the Surat Thani to Bangkok page — fares are the same in both directions on almost every leg here, but the timetables are not. To string this hop into a longer trip with a pace check, use the route planner, and see the island comparison for which coast is dry in the month you are travelling.

The Bangkok end of this leg starts at a station or a terminal rather than a hotel door: getting around Bangkok has the BTS, MRT and boat fares for reaching Hua Lamphong, Krung Thep Aphiwat and the two bus terminals, and airport to city covers the Suvarnabhumi and Don Mueang runs if the leg is a flight.

Sources

seat61.com Thailand rail fares (page updated 8 July 2026) — a dated route reference.
InsideSamui Bangkok–Koh Samui transport guide (2026 edition) — a dated route reference.
Raja Ferry Port fare and timetable board — the carrier's own fare board.
12go.asia route listings (band from what was on sale, not a tariff) — aggregator listings, not a published tariff.
Lomprayah High Speed Ferries route list and journey times — the carrier's own fare board.

Checked 7 September 2026. Every figure on this page is a range, because every one of them moves.

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