Koh Samui is easier to reach today than at almost any point in its history, and it keeps getting easier. A terminal expansion, new regional flights and a low-cost gateway through the mainland now give travellers several ways onto the island, at every budget. For the west coast, where the quietest beaches sit, that shift carries real weight.
A Private Airport at the Island's Heart
Koh Samui Airport (USM) is one of the very few privately operated airports in Thailand. Bangkok Airways has owned and run it since 1989, and built it into one of the most pleasant terminals in Southeast Asia, open-air and laid out like a tropical garden. The airline was long the only carrier on the Bangkok-Samui route, and remains the dominant operator.
That strong presence follows a clear commercial logic. Samui accounts for around 74% of Bangkok Airways' passenger revenue (Bangkok Airways, December 2025), its single most profitable route. It also explains why the airline keeps investing in the island. It has every reason to make sure access keeps pace with demand, and that is exactly what is happening.
More Ways In Every Year
The direct flight remains the fastest way in. Bangkok Airways has gradually opened slots to other carriers, and new regional links are shortening the distance between the island and Asia's major hubs. From Singapore, Hong Kong or Kuala Lumpur, Samui is one flight away.
The Samui Airport expansion, under way since 2026, supports that momentum. More capacity, more daily slots, an arrival experience designed for comfort rather than sheer volume. The island gains accessibility without giving up what makes it valuable.
"Samui is not opening up by becoming ordinary. It is opening up by multiplying the ways to reach it."
The Second Door, via the Mainland
Alongside the island airport, a second route is gaining ground, and it costs less. Surat Thani Airport (URT), on the mainland around 90 km away, is served by AirAsia, Nok Air and Thai Lion Air at noticeably lower fares. From there, a ferry reaches the island in under two hours of crossing.
The detail matters for the west coast. The Raja ferry links Surat Thani straight to Lipa Noi. Travellers who choose this route step off on the western side, minutes from Lipa Noi and Taling Ngam, where the island is at its calmest. Two profiles, two budgets, two doors in, and the same destination at the end.
An Island Investing in Its Access
Access to Samui is not a new concern for the authorities. The idea of a second, state-run airport has resurfaced regularly since a 2003 cabinet resolution, with a viability study carried out by Kasetsart University in 2012 for a site at Na Muang. The project never came to be, but it points to something simple. Reaching the island is a goal watched closely, by the state and by the private operator alike.
In practice, it is the expansion of the existing terminal that has gone ahead, in 2026. The effect is the same for the visitor and the investor. More capacity, more connections, an island that is simpler to reach with each passing year.
What Access Means for Value
Accessibility is one of the most reliable drivers of property value. The easier a place is to reach, across several routes and several budgets, the wider its pool of visitors and buyers. Samui ticks that box, and ticks it better every year.
"The easier a place is to reach, across budgets and routes, the wider the pool of people who can buy into it."
The west coast is best placed to benefit. It already receives ferry arrivals from the mainland, and it gains, like the rest of the island, from every airport improvement. Long seen as the quietest and most remote stretch from the terminal, the west coast is becoming an address that is both peaceful and well connected. You can model what that accessibility means for rental demand with our ROI calculator.
THEVA Horizon sits on this west coast, directly below the Ida B Domaine hotel. A quiet, sunset-facing position, now carried by access that is strengthening in every direction. The scarcity of buildable land on this coastal strip does the rest.
Final Thoughts
Koh Samui remains a high-end island, but it is no longer a hard one to reach. A fast direct flight for some, a cheaper mainland route for others, and an airport investing to keep up with demand. This wider accessibility is one of the better pieces of news for anyone watching the market, and the west coast, where THEVA Horizon sits, is among the first to benefit.
