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Koh Chang sits off the south-east coast with jungle-covered hills, waterfalls and long beaches on its west side. From Siem Reap it is a journey between two countries, and right now it has to go by air: land borders and crossings between Cambodia and Thailand are suspended.[1] That rules out the old overland route via Poipet and Aranyaprathet.
Siem Reap to Koh Chang by Flight via Bangkok
The practical way is two flights through Bangkok. Bangkok Airways flies direct from Suvarnabhumi (BKK) to Siem Reap-Angkor International Airport (SAI) in about 1 hour 20 minutes,[2] and direct from Suvarnabhumi to Trat Airport (TDX) in about 1 hour.[3] Koh Chang has no airport; Trat is the gateway.
On booking platforms, flights from Siem Reap to Trat with a stop in Bangkok cost from about $207 to $317 (October 2026), and the whole trip takes from about 3 hours, longer with a long layover.[4]
From Trat Airport to Koh Chang
Trat Airport is about 30 to 35 km from Trat town and the transfer takes around 30 to 40 minutes. Taxis, airport transfers and rental cars run from the airport, and it connects to the piers for Koh Chang, Koh Mak and Koh Kood.[3] Ferries to the island leave from the mainland piers, so plan the last leg for daylight.
Comparing Your Options
| Mode | Price (USD) | Duration |
|---|---|---|
| Flight via Bangkok to Trat | $207 - $317 | From about 3h[4] |
Tips for Traveling from Siem Reap to Koh Chang
- Siem Reap airport: Siem Reap-Angkor International Airport is about 50 km from downtown, around 50 to 60 minutes by taxi, shuttle or hotel transfer.[2]
- Season: November to April is generally dry with calmer seas around Trat and the islands; May to October brings more rain and sometimes rougher seas.[3]
- Currency: Thailand uses the baht. Change money or withdraw cash in Bangkok or Trat before you go to the island.
Timetable
| Flight Siem Reap - Trat $ 206.32–315.56 3h 7m – 8h 22m | |
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| Bus Siem Reap - Koh Chang $ 44.26 11h 30m | |
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| Taxi Siem Reap - Koh Chang $ 268.12–356.28 7h – 11h | |
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Frequently Asked Questions
Use the booking tool on this page to compare the transport options currently available from Siem Reap to Koh Chang, including current prices and schedules.
With the land border closed, the only option is flying via Bangkok. On booking platforms, fares start from about $207 (October 2026).
Fly to Trat via Bangkok. The journey takes from about 3 hours to Trat Airport, then a transfer to the pier and a ferry to the island.
From about 3 hours by air to Trat, depending on the layover in Bangkok, plus the transfer and ferry to the island.
Not at the moment. Land borders and crossings between Cambodia and Thailand are suspended, so the route via Poipet and Aranyaprathet is closed.
No. Koh Chang has no airport. Fly to Trat Airport (TDX) on the mainland, then continue by transfer and ferry.
Trat Airport is about 30 to 35 km from Trat town. From there, transfers connect to the piers for Koh Chang.
Sources and background
Numbers in the text such as [1] refer to these sources.
- [1] UK Foreign, Commonwealth & Development Office: Cambodia travel advice: Warnings and insurance. Retrieved October 28, 2026.
- [2] Bangkok Airways: Flight Ticket from Bangkok to Siem Reap. Retrieved October 30, 2026.
- [3] Bangkok Airways: Flight Ticket from Bangkok to Trat. Retrieved October 30, 2026.
- [4] 12Go: Siem Reap - Koh Chang timetable. Retrieved October 30, 2026.
Guide prices and journey times are indicative, not live quotes. A booked package may include transfers and waiting time as well as the main journey. Check the selected offer, pickup point and current conditions before booking.