Koh Samui’s ring road (Route 4169) makes navigation straightforward: one 51-kilometre loop circles the island, and everything branches off it. But the lack of metered taxis, limited ride-hailing coverage, and a songthaew system that follows fixed routes rather than on-demand pickups means getting around Koh Samui effectively takes some local knowledge. This guide covers every transport option from the airport Smart Bus to motorbike rental and ferry bookings.
Getting Around Koh Samui: Airport Transfers (USM)
Samui Airport (USM) is privately owned by Bangkok Airways and sits at the island’s northeast tip near Choeng Mon, 5 kilometres from Chaweng (15 minutes) and 15 kilometres from Lamai (25 minutes). Airport transfer options: shared minivans run 130 to 200 THB per person to Chaweng, Lamai, and Bophut, purchased at the transport counter in the arrivals hall. Private taxis from the same counter cost 400 to 600 THB to Chaweng, 600 to 800 THB to Lamai. The airport does not allow Grab or Bolt pickups inside the terminal area; you can walk 500 metres to the main road and order one for 300 to 400 THB to Chaweng. Note the airport departure tax: all passengers departing USM pay 700 THB (international) or 400 THB (domestic) at check-in, on top of what’s included in the ticket. The departure terminal is open-air with a boutique shopping arcade and coffee shops; arrive 1.5 hours before domestic, 2 hours before international flights.
Getting Around Koh Samui: Songthaews, Taxis, and Grab
Songthaews (red pickup trucks with two bench seats in the back) are Samui’s main public transport, running fixed routes on the ring road from 6:00 to 18:00 approximately. Fares are 50 to 100 THB per person depending on distance. The key route is Nathon to Chaweng (60 THB, 45 minutes) which passes through Maenam and Bophut. Chaweng to Lamai runs 60 THB (20 minutes). Songthaews do not operate on demand; flag one down, tell the driver your destination, and pay when you get off. After 18:00, songthaews become de facto private taxis and rates jump to 400 to 600 THB per trip. Regular taxis on Samui are unmetered and expensive: Chaweng to Lamai costs 400 to 500 THB, Chaweng to Nathon 600 to 800 THB. Grab and Bolt operate but with fewer drivers than Phuket; expect 5 to 15-minute waits outside Chaweng. Bolt is generally 30 percent cheaper than Grab but has even fewer drivers.
Getting Around Koh Samui: Motorbike Rental
Motorbike rental is 200 to 300 THB per day for a 125cc automatic. The ring road is well-paved and generally safer than Phuket’s roads, with fewer steep hills and more predictable traffic. The main hazard is sand washed onto coastal curves after rain, and drunk-driving tourists returning from Chaweng after midnight. Police checkpoints are common on the Chaweng to Lamai road and near Bophut intersection; helmet fine is 500 THB, no-licence fine is 500 THB. Samui’s interior roads to Na Muang waterfalls and the Secret Buddha Garden are steep with loose surfaces; a 125cc with two riders will struggle on these sections. Rent from a reputable shop (ask at your hotel) rather than from roadside stalls, photograph the bike including scratches, and never leave your passport as deposit.
Getting Around Koh Samui: Ferries to Islands and Mainland
Two main ferry companies serve Samui. Lomprayah operates high-speed catamarans from Maenam Pier to Koh Phangan (30 minutes, 350 THB), Koh Tao (1.5 hours, 600 THB), and mainland Surat Thani (1.5 hours, 700 THB) with connecting buses to Bangkok, Krabi, and Phuket. Seatran Discovery runs from Bang Rak Pier to Koh Phangan (30 minutes, 300 THB) and from Nathon Pier to Surat Thani (1.5 hours, 500 THB). The Raja Ferry from Nathon to Surat Thani (1.5 hours, 300 THB) is slower but takes vehicles. Book tickets at any travel agent on the island or via 12Go.asia. During the November-December monsoon, crossings to Koh Tao may be cancelled on short notice; Lomprayah posts updates on their Facebook page.
