Ferries to the Thai Islands: Joined-Up Bus, Train and Boat Routes
Key takeaways
- Most Thai island ferries are sold not as a standalone boat but as a joined-up bus-and-boat or train-and-boat ticket that carries you from the mainland to the pier and across to the island on one booking.
- The main gulf operators to Samui, Phangan and Tao are Lomprayah, Seatran and Raja; the Andaman routes to Phi Phi and Lanta run from Phuket and Krabi on a similar combined-ticket basis.
- A combined ticket means one company owns the whole chain, so a late bus waits for its own boat and you are not stranded at a pier watching your ferry leave without you.
- The Andaman side has a real low season: rougher seas and thinner schedules from roughly May to October, with the calmest, busiest boats in the November to April high season.
- Book combined tickets ahead through the operator or an aggregator for peak season and the popular early boats, and always leave slack before an onward flight in case the sea delays the crossing.
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A ferry to a Thai island is almost never sold as a boat on its own; it is sold as a joined-up bus-and-boat or train-and-boat ticket that carries you from the mainland all the way to the island on a single booking, run by one of a handful of established operators such as Lomprayah, Seatran and Raja. 1 Once that clicks, the whole business of getting to Samui or Tao or Phi Phi stops looking like a puzzle of separate legs you have to stitch together yourself. I spent my first island trip anxiously buying each piece at a different counter; now I book one through ticket and let the operator own the connection. Here is how the joined-up system actually works, who runs the boats, and when the sea gets a vote.
How joined-up island tickets work
A combined island ticket bundles the road or rail leg and the boat into one purchase from a single operator, which is the whole point of it. 1 You book, say, a coach from the mainland to the ferry pier and the ferry crossing together, and because the same company owns both, a bus running late is met by its own boat, which waits. The alternative, buying the bus from one seller and the boat from another, is how people end up stranded on a pier watching a ferry pull away that they technically had a ticket for.
The same logic covers train-and-boat routes, pairing an SRT service down to the coast with an onward ferry under one booking. 2 My rule after a few too many self-assembled trips is simple: buy the whole chain from one operator wherever the route allows it, so there is one company responsible for getting me across and one phone number if anything slips.
The main operators and their islands
Three operators dominate the gulf crossings to Samui, Phangan and Tao: Lomprayah, Seatran and Raja, all long-established rather than any one being the obvious best. 1 Lomprayah runs fast catamarans and is the name you will hear most for the Koh Tao and Koh Phangan hops. Seatran is a dependable Samui workhorse running frequent crossings. 3 Raja operates the bigger, slower vehicle ferries, which is the one to book if you are bringing a car or a motorbike. 4
On the Andaman side the crossings to Phi Phi and Lanta run out of Phuket and Krabi on the same combined-ticket basis, with a mix of larger ferries and small speedboats depending on the route. I choose by the pier and the timing that fit my day rather than by loyalty to a company name; on the water they are all doing much the same job to much the same standard.
Seasons and rough-sea days
The Andaman coast has a genuine low season, roughly May to October, when rougher seas and thinner schedules can delay or cancel the smaller speedboats and, on a bad day, the larger ferries too. 2 The calmest, busiest water is the November to April high season, which is when the boats run fullest and most often. The gulf islands are generally more sheltered but have their own rougher spells, so neither coast is a guaranteed millpond year-round.
The practical lesson I learned the wet way is that boat size beats bravado. On a marginal day the big, heavy ferry rides the swell far better than a small speedboat that slaps into every wave, so when the sea looks angry I take the slower, larger boat and accept the longer crossing. The other hard rule: never book an island ferry tight against an onward flight, because a weather delay on the water does not care about your check-in time.
Booking a combined ticket
You book combined island tickets either straight from the operator or through an aggregator that lists all of them side by side, which is the easier way to compare piers and departure times in one place. 5 Booking direct with Lomprayah, Seatran or Raja is clean when you already know the route you want; an aggregator earns its keep when you are pairing the boat with a train or a long bus and want the whole journey on one e-ticket. 5 The full mechanics of doing this online are in booking transport online in Thailand.
Book ahead for the high season, Thai holidays, and the popular early boats, and take whatever sensible option is left rather than holding out for a perfect departure time. 1 For how the ferry leg slots into the whole trip down from the capital, including which mainland leg to pair it with, see Bangkok to the islands, where I set out the realistic train, bus and fly combinations end to end.
General guidance, not a live schedule. Ferry operators, routes, seasons and fares change, and crossings can be delayed or cancelled by weather; treat everything here as approximate, confirm the current timetable with the operator, and leave a generous margin before any onward flight.
References
- Lomprayah High Speed Ferries, Lomprayah. ↩
- Thailand islands and beaches, Tourism Authority of Thailand (TAT). ↩
- Seatran Discovery Ferry, Seatran Discovery. ↩
- Raja Ferry Port, Raja Ferry Port. ↩
- Thailand ferries, trains and buses, 12Go Asia. ↩
Frequently asked questions
What is a joined-up bus-and-boat ticket in Thailand?
It is a single ticket that covers the whole trip from the mainland to the island: a coach or minivan to the ferry pier, then the boat across, sold as one booking by one operator. The key benefit is that the connection is guaranteed within that company, so if the road leg runs late the boat is theirs and it waits. Train-and-boat versions work the same way, pairing an SRT service to the coast with an onward ferry.
Which ferry operator is best for Koh Samui, Phangan and Tao?
The three main gulf operators are Lomprayah, Seatran and Raja, and all three are established and reliable rather than one being clearly best. Lomprayah runs fast catamarans and is popular for the Tao and Phangan hops; Seatran is a solid Samui workhorse; Raja runs the larger vehicle ferries and is the one to book if you are bringing a car. Choose on the timing and pier that suit your route rather than loyalty to a name.
Are the seas ever too rough for the island ferries?
Yes, mainly on the Andaman side in low season, roughly May to October, when swells can cancel or delay the smaller speedboats and even the bigger ferries on a bad day. The gulf is generally calmer but has its own rougher spells. The larger, heavier boats handle weather better than the small speedboats, so on a marginal day the slower ferry is the safer choice. Never book an island crossing tight against a flight.
Can I just turn up and buy a ferry ticket on the day?
Often yes, outside peak periods, especially for the frequent Samui and Phi Phi services. But in the November to April high season, over Thai holidays, and on the first boats of the day, seats sell out, and turning up can mean a long wait for the next crossing. If your dates are fixed or you are connecting to a flight or a booked room, reserve the combined ticket ahead and travel on the plan rather than on hope.
How do I get from Bangkok to Koh Samui by ferry?
You combine a long mainland leg with a boat. The common routes are an overnight train or a bus down to the Surat Thani area, or a flight to Surat Thani or Samui, then a Lomprayah, Seatran or Raja ferry across from the Donsak piers. Booked as a through bus-and-boat or train-and-boat ticket it becomes one seamless journey. The full breakdown is in the Bangkok to the islands guide.
Do ferries to the Thai islands carry cars and motorbikes?
Some do. The larger vehicle ferries, Raja on the gulf side in particular, take cars and motorbikes, which matters if you are driving down or renting on the mainland. The fast catamarans and speedboats are passenger-only. If you want your own wheels on the island, book a vehicle ferry specifically and arrive with time to spare, as vehicle space is more limited than passenger space and loads earlier.
Written by Jon Ferris. Checked by Wichai Thongchai, 20+ years professional driver, Bangkok.
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