You can bring a motorbike to Koh Samui on the Raja or Seatran roll-on car ferries from the Don Sak piers in Surat Thani, a 1.5-hour crossing, but almost no visitor should. Rented bikes cannot leave their shop's island, and the fast catamarans to Koh Phangan and Koh Tao do not carry scooters, so for nearly everyone the answer is to fly or ferry in as a passenger and rent on arrival, then re-rent on each island you visit.
Key Takeaways
- The only bike-carrying ferries: the Raja Ferry (Don Sak to Lipa Noi) and Seatran Ferry (Don Sak to Nathon) roll-on car ferries, each about a 1.5-hour crossing, running roughly 05:00 to 19:00.
- Rentals cannot leave the island: Koh Samui rental contracts require the bike to return to the same shop and forbid taking it off the island, so the car ferry is for owners, not renters.
- Catamarans do not carry bikes: the high-speed Lomprayah and Seatran Discovery catamarans to Koh Phangan and Koh Tao are passenger boats with a luggage limit, not vehicle ferries.
- The right move for visitors: fly into Samui Airport or arrive by passenger ferry, then rent on the island; re-rent separately on Koh Phangan or Koh Tao.
- Don Sak parking: if you ride your own bike to the mainland pier and walk on instead, motorbike parking at Don Sak is about 5 THB per hour, capped near 100 THB for a full day.
- Book vehicle space ahead in peak season: the car decks fill on holiday weekends, so reserve the Raja or Seatran crossing in advance if you are genuinely bringing a bike.
Don Sak ferries: Raja vs Seatran with a bike
The two ferries that carry a motorbike to Koh Samui both leave from the Don Sak piers in Surat Thani on the mainland: the Raja Ferry runs the roll-on roll-off car ferry to the Lipa Noi pier in the island's southwest, and Seatran Ferry runs its vehicle service to the Nathon pier on the west coast, each taking about 1.5 hours and running roughly 05:00 to 19:00. These are true vehicle ferries with open car decks, so a motorbike rides on board the same way a car does, and they are the only practical way to get two wheels across the water to Samui.
The two routes land you in different places, which matters for where you are headed. Lipa Noi, the Raja terminus, sits in the quiet southwest near Taling Ngam, a short ride from the ring-road loop but a fair way from Chaweng. Nathon, the Seatran terminus, is the island's main working town on the west coast, central for the ring road in either direction. Both connect to the same coastal Route 4169, so neither is wrong; pick by where you are staying. If you are parking your own bike on the mainland and crossing as a foot passenger instead, Don Sak charges about 5 THB per hour for motorbike parking, capped near 100 THB for a full day. The catch that overrides all of this for most readers is the rental rule, covered below.
Fly in and rent, or bring your own?
For almost every visitor the answer is to arrive without a bike and rent on the island, because the car ferry only makes sense if you already own a motorbike in Thailand and are touring it. Flying into Samui Airport or arriving as a foot passenger on a fast catamaran, then renting a scooter on arrival, is cheaper, simpler, and avoids the 1.5-hour vehicle crossing and the question of getting the bike home again.
The bring-your-own case is narrow. It fits a Thai resident or a long-term traveller who owns a bike, wants it for a multi-week island stay, and is comfortable with the ro-ro crossing and the cost. Everyone else, the one-week holidaymaker, the island-hopper, the fly-in visitor, is far better served renting on Samui: a 125cc runs 140-350 THB per day, the shop handles the paperwork and insurance, and there is no ferry logistics to manage. The full picture of choosing a shop and getting a bike on arrival is in the best scooter rental on Koh Samui guide and the Koh Samui motorbike rental guide, and the rates sit in the Koh Samui scooter rental price breakdown. Samui Airport itself has no rental counter, so renting means a delivery or a shop in your base area, which the best-rental guide explains. For how Samui's island rental scene compares to a smaller island, the best motorbike rental on Koh Lanta breakdown is the closest parallel, and the Thailand motorbike rental scams guide covers the traps that apply to any arrival-day rental.
Can you ferry a rented scooter to Phangan or Tao?
No. You cannot take a rented Koh Samui scooter onward to Koh Phangan or Koh Tao, for two separate reasons that each settle it: the high-speed catamarans that run between the islands are passenger boats that do not carry motorbikes, and your rental contract forbids the bike leaving the island in the first place. The standard island-hopping move is to travel between the islands as a foot passenger and rent a fresh scooter on each one.
The inter-island boats, Lomprayah, Seatran Discovery, and Songserm, are built for speed and passengers, with a luggage allowance rather than a vehicle deck, so there is simply nowhere to put a scooter. Even if there were, a Samui rental shop's agreement ties the bike to the island and to that shop for its return, the same way Byklo bookings work across the country. So the practical island-hopping pattern is clean: ride your Samui rental on Samui, return it, take the catamaran to Koh Phangan or Koh Tao as a foot passenger, and rent again on arrival. It costs a little more than one continuous rental, but it is the only way the logistics and the contracts actually work. Note that Byklo currently operates on Koh Samui but not yet on Koh Phangan, so a Phangan bike is a walk-in rental on that island.
Why most shops ban inter-island riding
Koh Samui rental shops ban taking the bike off the island because they cannot recover or service a bike stranded on another island, the insurance is written for local use, and the booking ties the bike to a single shop for its return. It is not an arbitrary rule; it is the same return-to-the-same-shop logic that applies to every rental in Thailand, made stricter by the water around the island.
The reasoning is practical. If a rented scooter breaks down or crashes on Koh Phangan, the Samui shop has no way to reach it; the compulsory insurance and any optional cover are priced for island use, not inter-island touring; and a one-way trip would leave the bike on the wrong island with no agreed way back. This is why the rental contract specifies the bike returns to the same shop, and why "can I take it on the ferry to Phangan" is a question shops answer with a firm no. The wider rule and the deposit norms are covered in the Koh Samui motorbike rental scams guide and the no-passport deposit rental guide; the cover that does and does not come with a rental is in the motorbike rental insurance Thailand guide. For the national picture on how rentals work, see the motorbike rental Thailand guide and the Thailand scooter rental cost overview.
Booking the crossing and timing the tides
If you genuinely are bringing your own bike, book the Raja or Seatran vehicle ferry in advance for holiday weekends, arrive at Don Sak with time to load, and aim for a daytime crossing within the roughly 05:00 to 19:00 window. The car decks fill on Thai public holidays and long weekends, when domestic travellers move between the mainland and the island, so a vehicle space is the one thing worth reserving rather than buying at the pier.
Timing is about the schedule and the heat, not the tides, since the Don Sak ro-ro ferries run to a fixed timetable regardless of tide. Aim to cross in daylight so you arrive able to ride to your base in good light, allow buffer for loading and the 1.5-hour crossing, and carry water for the open deck. Foot passengers heading to Phangan or Tao on the catamarans should likewise book ahead in peak season and travel light within the luggage limit. Once you are on Samui with a bike, whether your own or a rental, the ring-road loop is the ride to plan first, and the Thailand motorcycle routes hub and the motorbike rental checklist for Thailand round out the prep.
Frequently Asked Questions
Can you take a motorbike on the ferry to Koh Samui?
Yes, on the roll-on car ferries: the Raja Ferry from Don Sak to Lipa Noi and the Seatran Ferry from Don Sak to Nathon both carry motorbikes on a vehicle deck, a crossing of about 1.5 hours. These run roughly 05:00 to 19:00. The fast passenger catamarans to the island do not carry bikes, only the Don Sak car ferries do.
Can I take a rented scooter from Koh Samui to Koh Phangan?
No. The high-speed catamarans between the islands carry passengers and luggage, not motorbikes, and Koh Samui rental contracts forbid taking the bike off the island anyway. Island-hoppers travel between Samui, Phangan, and Tao as foot passengers and rent a fresh scooter on each island.
Should I bring my own bike to Koh Samui or rent there?
Rent there, unless you already own a bike in Thailand and are touring it. For a normal holiday, flying or ferrying in as a passenger and renting a 125cc on the island at 140-350 THB per day is cheaper and far simpler than the 1.5-hour car-ferry crossing and managing the bike's return.
How long is the car ferry to Koh Samui?
About 1.5 hours each way. Both the Raja Ferry to Lipa Noi and the Seatran Ferry to Nathon take roughly 90 minutes from the Don Sak piers in Surat Thani, running through the day from about 05:00 to 19:00. Allow extra time at the pier to load a vehicle, especially on busy holiday weekends.
Where do the Koh Samui car ferries arrive?
The Raja vehicle ferry lands at Lipa Noi pier in the quiet southwest near Taling Ngam, and the Seatran vehicle ferry lands at Nathon, the island's main town on the west coast. Both connect to the coastal Route 4169 ring road, so either works; choose by where you are staying on the island.
Arrive, then rent on the island
For nearly every Koh Samui trip the smart move is to leave the ferry logistics behind: arrive by air or as a foot passenger, rent a scooter on the island, and re-rent on Koh Phangan or Koh Tao if you island-hop. A 125cc Honda Click at 140-350 THB per day covers Samui's whole ring road, and a reputable shop handles the paperwork the car ferry would not. Compare verified Samui shops and book before you land at Byklo, pay only a small card reservation fee online with the balance and cash deposit at pickup, and have the bike delivered to your hotel or near your arrival pier.
