The three Gulf islands are connected by a network of high-speed catamarans, speedboats, car ferries and slower night boats. Timetables, boat types and fares change by season and operator, so treat the times below as approximate guidance as of 2026 and confirm on the operator's own page before you buy. This guide explains the routes, how to choose between them and what to expect on the day. For island overviews, see Koh Samui, Koh Phangan and Koh Tao.
The route network at a glance
| Route | Typical time | Boat types | Notes |
|---|---|---|---|
| Samui to Phangan | About 30-60 min | Speedboat, catamaran, slower ferry | Several piers on each island; confirm which one |
| Phangan to Tao | About 1-2 hrs | Catamaran, speedboat, slower ferry | Most boats continue on to or from Samui |
| Samui to Tao | About 1.5-2.5 hrs | Catamaran, speedboat, night boat | Often runs via Phangan |
| Donsak to Samui | About 1.5-2 hrs | Car and passenger ferry | Starts on the mainland near Surat Thani |
| Chumphon to Tao | About 1.75-3 hrs | Catamaran, speedboat, night boat | Popular entry point for Tao |
| Surat Thani to Phangan or Tao | About 3-5 hrs | Ferry, sometimes via Samui | Longer than Chumphon for Tao |
Operators such as Lomprayah (catamarans on Chumphon, Tao, Phangan and Samui lines) and Raja Ferry (Donsak and Samui vehicle ferries) are examples. Other operators run speedboats and slower ferries. Check each operator's official site for current schedules.
Picking the right boat
- Catamaran: a faster, larger boat, usually with seats and some luggage storage. Often the default choice.
- Speedboat: quick but can be bumpy in swell; luggage is sometimes limited.
- Slower ferry: cheaper, a less intense ride and more deck space, but a longer journey.
- Night boat: an overnight option, especially to Tao. It suits a tight budget but is not very comfortable.
- Car ferry: needed if you bring a vehicle to Samui. Most visitors do not.
Seasickness can be a real issue on faster boats in rough weather. If you are prone to it, choose a larger boat, sit in a central seat and take preventive measures as advised by a pharmacist.
Typical routes from Bangkok
- Flight to Samui, then boat to Phangan or Tao. The fastest. See the arrival options on the Koh Samui hub.
- Overnight train or bus to Chumphon, then boat to Tao. This is common for Tao. Check timings so you do not miss the morning boat.
- Train or bus to the Surat Thani area, then ferry to Samui or Phangan. Combined tickets are widely sold; check the transfer plan.
- Fly into Surat Thani or Chumphon and connect. Fewer hours than overland but more transfers.
For train timings and booking, use the State Railway of Thailand. For general transport information see Thailand getting around.
Sample island-hopping loops
| Loop | Suggested days | Notes |
|---|---|---|
| Samui, Phangan, Tao, then Chumphon, then Bangkok | 8-12 days | One-way loop avoids backtracking |
| Bangkok, Chumphon, Tao, Phangan, Samui, fly to Bangkok | 8-12 days | Reverse; fly out of Samui at the end |
| Samui and Phangan only | 5-7 days | Short boat hop, easier timing |
| Tao only | 3-5 days | Good if you plan a dive course |
Build in a buffer day before an international flight. Boats can be delayed or cancelled by weather, and an onward flight booked tightly after a ferry is risky.
Buying tickets
You can usually buy boat tickets from the operator's own website, from reputable travel agents or at the pier. Combined tickets sold by third parties, such as bus plus boat, are common. Check the following before you pay:
- Which pier on which island and the departure time
- Whether the ticket is refundable or changeable if the weather cancels sailings
- Luggage rules and any extra charges
- Whether a transfer to the pier is included and the pickup point
Fares vary, and advertised prices may be rounded or rise in high season. As of 2026, fares are often in the low hundreds to a bit over a thousand baht per leg depending on the route and boat. Check the exact price on the operator's page.
Seasons and weather
Gulf-side seas are generally calmer in the drier months, roughly January to September, with the roughest conditions most often in the wetter months around October to December. Operators may cancel or reduce sailings if conditions are unsafe, which is a safety decision. If disrupted, ask about rebooking or refunds on the operator's page. Check forecasts from the Thai Meteorological Department.
If you have a tight connection around Full Moon Party dates, expect fuller boats and earlier sell-outs. See the Full Moon Party guide.
Safety and practical tips
- Wear a life jacket if offered, and note where they are stored.
- Keep valuables and passports in a carry-on bag rather than in stored luggage.
- Do not drink heavily before travel; boat rides can be rough.
- Arrive at the pier early, especially for popular morning departures.
- Carry some cash for piers and local transport, but most ticket offices accept cards.
- Thailand emergency numbers: 191 police, 1669 medical emergency, 1155 Tourist Police.
- If you plan to dive, remember the no-flying-after-diving guidance and see Koh Tao diving courses.
Overcrowded or unlicensed small boats are a risk. Use known operators, check that life jackets are provided and avoid boarding if conditions look clearly unsafe.
FAQ
How long does it take to go from Samui to Koh Tao?
Roughly 1.5-2.5 hours by catamaran or speedboat in most cases, sometimes longer on slower ferries or via Phangan. Check the operator's timetable.
Can I buy ferry tickets on arrival?
Often yes, but popular departures can sell out, especially around holidays and Full Moon Party days. Buying ahead is safer.
Are ferries cancelled in the rainy season?
Some sailings may be cancelled or delayed when seas are rough, mainly in the wetter months. Allow buffer days, and keep flexible bookings where possible.
Is there a direct boat from Phangan to Tao?
Yes. There are regular boats between the two islands, though schedules vary by season and operator.
Do I need to book the ferry and train together?
Not strictly. Combined tickets are convenient but check the transfer arrangements. Booking separately gives flexibility but needs careful timing.
Official sources and further reading
Prices, schedules and entry rules change. Figures here are approximate as of 2026; always confirm on the official or operator page before you book. Spotted something out of date? Tell us.
