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Gulf of Thailand and Andaman Sea · Runs all year

Koh Samui to Koh Yao Yai ferry

Koh Samui to Koh Yao Yai takes 7h 40m – 8h 40m by van + speedboat with Sapthaweephol Tour and Travel. Boats leave from Koh Samui (the pick-up point is printed on your ticket) and arrive at Koh Yao Yai (pier depends on the operator).

  • Crossing 7h 40m – 8h 40m
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✓ Checked 2 Nov 2026 against 4 sources

Updated 2 Nov 2026 · Sources · How we check

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Return trip: Koh Yao Yai → Koh Samui

Crossing time7h 40m – 8h 40m
On the waterVan + speedboat
DepartsKoh Samui (the pick-up point is printed on your ticket)
ArrivesKoh Yao Yai (pier depends on the operator)

Published schedule

Times from 12Go and Bookaway, check before you travel: 2 departures a day between 06:00 and 07:00

  • Sapthaweephol Tour and Travel: 06:00 → 14:40, 07:00 → 14:40

Times from 12Go and Bookaway’s schedule, checked 26 Oct 2026. No operator publishes a timetable we could check. Confirm on the booking page before you travel.

Route facts

DepartsKoh Samui (the pick-up point is printed on your ticket), Surat Thani
ArrivesKoh Yao Yai (pier depends on the operator), Phang Nga
Crossing time7h 40m – 8h 40m
DistanceAbout 119 nautical miles (220 km)
OperatorsSapthaweephol Tour and Travel (7h 40m – 8h 40m)
BoatsVan + speedboat
SeasonRuns all year
VehiclesPassengers only
SeaGulf of Thailand and Andaman Sea
Koh Samui Koh Yao Yai
Koh Samui (the pick-up point is printed on your ticket) → Koh Yao Yai (pier depends on the operator) · about 119 nautical miles. Straight line between piers, not the sailing track. Coastline: Natural Earth.
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Before you travel

Good to know

  • No operator or government timetable is published for this crossing. The times on this page are the ones 12Go and Bookaway listed on 26 October 2026; check yours when you book and again before you travel.
  • The ticket covers the car ferry to the mainland, the van across to the Andaman coast and the speedboat to Koh Yao Yai.
  • Going back: 12Go lists Sapthaweephol’s Koh Yao Yai → Koh Samui van + ferry ticket at 09:00 (arriving 15:30) and 11:00 (arriving 17:30); Bookaway lists departures from 09:00 to 11:00, taking 6h 30m (checked 26 October 2026).
  • Koh Yao Yai (Klong Hia Pier) and Koh Yao Noi (Manoh Pier) are separate stops about 2.7 km apart across the channel, often served by the same Bundhaya boat a few minutes apart. Check that your ticket names the right island.

Koh Samui to Koh Yao Yai ferry: questions

How long is the ferry from Koh Samui to Koh Yao Yai?

Operators publish 7h 40m – 8h 40m for Koh Samui to Koh Yao Yai. The sea distance is about 119 nautical miles.

How often does the Koh Samui to Koh Yao Yai boat run?

Times from 12Go and Bookaway, check before you travel: 2 departures a day between 06:00 and 07:00 (12Go and Bookaway schedule (booking sites; no operator timetable published), checked 26 Oct 2026).

Where does the Koh Samui to Koh Yao Yai ferry leave from?

The main departure point is Koh Samui (the pick-up point is printed on your ticket); boats arrive at Koh Yao Yai (pier depends on the operator).

Which companies run ferries from Koh Samui to Koh Yao Yai?

Sapthaweephol Tour and Travel. Sapthaweephol Tour and Travel: Van + speedboat.

Does the Koh Samui to Koh Yao Yai ferry run all year?

The sources we checked list it as a year-round service. The southwest monsoon brings rougher seas from roughly May to October. Several island-hopping speedboats, especially in the far south around Koh Lipe and the Trang islands, run only in the high season, roughly November to April.

Can I take a car or motorbike from Koh Samui to Koh Yao Yai?

No. This is a passenger service; vehicles are not carried.

How long does the boat from Koh Samui to Koh Yao Yai take?

7h 40m – 8h 40m on the departures 12Go lists. Bookaway gives 7h 40m to 8h 10m. Times depend on the boat and the sea, and no operator timetable is published, so check the time on your ticket.

What time is the first and last boat from Koh Samui to Koh Yao Yai?

12Go lists 2 departures a day between 06:00 and 07:00. Bookaway shows the earliest at 07:00 and the latest at 07:00. These are booking-site times checked on 26 October 2026; they change with the season and the weather, so confirm before you travel.

Who runs the boats from Koh Samui to Koh Yao Yai?

12Go lists Sapthaweephol Tour and Travel; Bookaway lists 1 operator on the route. 12Go's tickets start from THB 768.

Sources and checks

We check each route against the operators’ and ports’ own pages, and read our booking partner’s public route page for current departures. Facts we could not confirm are left out.

  • 12go.asia, checked 26 Oct 2026: 12Go (booking site): schedule table of bookable departures with operator, boat type, departure and arrival times, read 26 Oct 2026. No operator timetable is published for this crossing.
  • bookaway.com, checked 26 Oct 2026: Bookaway (booking site): 1 operator, departures 07:00–07:00, 7h 40m to 8h 10m, read 26 Oct 2026.
  • bookaway.com, checked 26 Oct 2026: Bookaway (booking site): return route page (3 operators, departures 09:00–11:00, 6h 30m), read 26 Oct 2026.
  • Booking partner (12Go) public route page, departures and fares read 2 Nov 2026

Photo: Coconut palms on a white sand spit at Koh Yao Yai, with forested hills across the water (Tom Ek, Wikimedia Commons, CC BY-SA 2.0).

🙏 Spotted something out of date? Tell us at sawadee@thaiferries.co and we’ll check it.

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