Thailand’s Islands, Ranked by Flight Time
This guide sorts Thailand islands by flight time, because every other island list in the country is written the same way. Best beaches, best nightlife, best for couples, best for families. None of them answer the question people actually ask before they book, which is how long it takes to get there.
So this one is ordered by range. The islands are grouped by how far they sit in the air from the two places most people start, Bangkok and Phuket, with an honest note on each. Some of the best ones are further down the page than you would expect, and a few of the famous ones are closer than their reputation suggests.
A note on method. The distances here are flying distances in a light aircraft out of Bangkok and Phuket, the kind of single-engine turboprop that charter operators use on these routes. Siam Seaplane flies a Cessna Grand Caravan across both, and their route map is the basis for the ordering. Ferry and road times are the standard alternatives, not the fastest possible version of them.
Asa Marsh flew with Siam Seaplane for our full film. Watch it below.
The short hops: under half an hour
These are the islands that sit almost on top of their departure point, and where the journey is entirely about the last leg rather than the distance.
Phi Phi, from Phuket. Twenty minutes in the air, and the better part of a morning by ferry once you have queued at both piers. The reputation is built on Ton Sai in high season, which is fair, and misleading. Stay away from the main bay and it is one of the best pieces of coastline in the country.
Koh Yao Noi and Koh Yao Yai, from Phuket. Out in Phang Nga Bay between Phuket and Krabi, and close enough to both that the return journey never becomes the reason you leave early. Quiet, low rise, and largely undeveloped by the standards of anywhere else on this list.
Koh Racha, from Phuket. The short run south. Clear water, busy by mid morning with day boats, empty again by late afternoon. Best as an overnight rather than a trip.
Half an hour to an hour
The band where flying stops being a convenience and starts changing what is possible in a weekend.
Koh Lanta, from Phuket. Larger and slower than Phi Phi, with long beaches and a pace that suits a week better than a weekend. Reaching it by road involves two ferries, which is the entire argument for flying.
Koh Samet, from Bangkok. Just over the hour to Rayong, far enough by road that the Friday drive puts people off, and quieter than its proximity to the capital would suggest.
Hua Hin, from Bangkok. Not an island, and it belongs here anyway because it is the mainland alternative that sits in the same band. Under an hour in the air against a drive that Friday traffic can double.
Pattaya and the islands off it, from Bangkok. Closer than most people think and considerably more varied than the headline strip. The Jomtien and marina end is where anyone who comes for the water actually goes.
One to two hours
This is the band where the arithmetic swings hardest, because almost everything here is a full day by road and boat.
Koh Samui, from Bangkok or Phuket. Two hours from Bangkok and around an hour from Phuket. The most useful island in the country for anyone splitting time between coasts, because the Gulf and the Andaman keep opposite weather. When one is in green season the other is often at its best, and an hour between them makes that a real option rather than a theory.
Koh Phangan and Koh Tao, from Bangkok. Alongside Samui, and both reached by adding a boat leg. Phangan has grown into a wellness and long stay island with very little connection to what made it famous. Tao is still the place people learn to dive.
Koh Chang, from Bangkok. Near the Cambodian border, five or six hours by road plus a ferry, which is why it needs three nights to be worth it on the ground and two in the air. Siam Seaplane lists it as a route in development.
The Trang islands, from Phuket. Koh Kradan and Koh Mook are the names, and they get a fraction of the traffic of anywhere further north. A full day to reach by the usual route.
Two hours and over
The long runs, where flying is the only thing that makes a short trip possible at all.
Krabi and the Andaman coast, from Bangkok. A little under three hours. The limestone coastline is the best in Thailand and the province now holds the country’s first approved seaplane landing sites, off Tubkaek Beach north of Ao Nang, signed off in May 2026.
Phuket, from Bangkok. Same band. Big enough to carry a week on its own, and the only island on this list with the density of restaurants, hotels and services that a city would have.
The Similan and Surin islands, from Phuket via Khao Lak. Seasonal, national park access only, and the best diving in the Andaman. The journey is the reason most people never go.
What the ordering actually tells you
Read the list back and a pattern shows up. The islands people rate highest are rarely the closest ones, and the gap between reputation and range is almost always a ferry.
That gap is starting to close. Thailand brought in its first commercial seaplane regulations on 1 July 2025, and the first water landing sites were approved in Krabi in May 2026. Further sites have been put forward at Koh Phi Phi, on Phuket and at Koh Yao Noi. Once those open, the last leg on several of these islands stops being a pier and starts being the beach in front of where you are staying.
Which will not change the flying times at all. It will change the only number that ever mattered, which is the one on your door to door.
Keep reading
For the operator behind these flight times, read our profile of the airline bringing seaplanes to Thailand. To put the list to use, see five of the best trips from Bangkok by private plane, five smaller islands you can reach from Bangkok and every scenic flight you can take in Thailand. To see what the trip is like from the cabin, read our walkthrough of a Bangkok to Koh Samui private flight.
