Bangkok AirwaysDepart08:30
Wed, Nov 11USM → TDX
2h 15m · 1 stop
$125one way, per person
View deal
- Cheapest fare
- $125
- Cheapest month
- November
- Direct flights
- Not recently
- Quickest trip
- 2h 15m
Bangkok Airways · Wed, Nov 11
from $125
Usually 1+ stop
390 km
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Cheapest month to fly from Koh Samui to Trat
Lowest one-way fare per person in each month. Choose a month to see every date.
Cheapest dates in November 2026
The lowest fares we've seen for each day, cheapest first.
Bangkok AirwaysBangkok AirwaysDepart20:30
Tue, Nov 24USM → TDX
2h 15m · 1 stop
$183one way, per person
View deal
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About flights from Koh Samui to Trat
Koh Samui (USM) and Trat (TDX) are about 390 km apart. We haven't seen direct fares on this route recently, so expect at least one stop; the quickest journey we've seen takes about 2h 15m. Over the next few months, one-way fares start from $125, and November 2026 is currently the cheapest month to fly.
These prices come from searches travellers made in the last 48 hours, so they move quickly. If you see a good fare, it's worth booking soon. FlightsExp is free to use: you book directly with our travel partner.
Frequently asked questions
How much is a flight from Koh Samui to Trat?
The cheapest one-way fare we've seen recently is $125 with Bangkok Airways, departing Wednesday, November 11, 2026.
What is the cheapest month to fly from Koh Samui to Trat?
November 2026 currently has the lowest fares, from $125 one way.
Are there direct flights from Koh Samui to Trat?
We haven't seen direct fares recently, so most journeys include at least one stop.
How long is the flight from Koh Samui to Trat?
The quickest journey we've seen takes about 2h 15m. Koh Samui and Trat are around 390 km apart.
Which airlines fly from Koh Samui to Trat?
Recent fares on this route were with Bangkok Airways.
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