Cheap flights from Trat to Koh Samui from $191 TDX → USM
Trat Airport (TDX) → Koh Samui Airport (USM)
The cheapest one-way found recently is $191 with Bangkok Airways, 2 Feb 2027, found 3 days ago.
- Cheapest one-way found recently
- $191, found 3 days ago
- Cheapest month to fly
- February 2027, one-way fares from $191 found in the last 7 days
One-way
The cheapest one-way fare on each of 3 departure dates is usually $229 to $268.
Cheapest one-way found recently
$191
2 Feb 2027 · Bangkok Airways
Trat Airport (TDX) → Koh Samui Airport (USM)
Leaves 9:40 a.m. · 32 h 35 min trip
1 stop
found 3 days ago
Cheapest nonstop one-way
None seen yet.
Found recently, and the cheapest we hold
$191 2 Feb 2027found 3 days agoOpen this trip
It is also the cheapest one-way we hold, of any age.
What have prices looked like?
Over 46 days, 24 Sept to 11 Nov, the cheapest one-way we saw each day was $148 to $324.
Those were the prices on those days, not today's.
Is this a good one-way price?
Compared with the cheapest one-way fare on each of 3 departure dates from 17 Dec to 2 Feb 2027, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
We hold no other one-way fares leaving within 3 days of 2 Feb 2027 to compare.
Every date we hold
3 fares on 3 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 17 Dec | $267 | Bangkok Airways | Trat Airport (TDX) → Koh Samui Airport (USM) | 1 stop | found 4 days ago | Open this trip |
| 23 Dec | $269 | Bangkok Airways | Trat Airport (TDX) → Koh Samui Airport (USM) | 1 stop | found 5 days ago | Open this trip |
| 2 Feb 2027 | $191 | Bangkok Airways | Trat Airport (TDX) → Koh Samui Airport (USM) | 1 stop | found 3 days ago | Open this trip |
Which month looks cheapest?
February 2027 is the cheapest month — from $191.
Airlines on the cheapest dates: Bangkok Airways.
Premium cabin fares from Trat to Koh Samui
We hold no premium economy, business or first-class fares for this route: we collect them for the busiest routes, and this one is not among them yet.
Today's prices for 2 Feb 2027 in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Trat to Koh Samui?
One-way
Fares 90 to 179 days before departure were typically 42% lower than 30 to 59 days before departure.
From the cheapest one-way each day between 24 Sept and 11 Nov (46 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 30–59 days | $269 | $152 | +74% | 15 |
| 60–89 days | $215 | $164 | +39% | 30 |
| 90–179 days | $155 | $148 | Cheapest seen | 23 |
| 180+ days | $167 | $148 | +8% | 11 |
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
One-way
Trat → Surat Thani
94 km from Koh Samui
$172
$19 less than flying to Koh Samui
1 Dec · TDX → URT · 1 stop
found 3 days ago
Cheapest recent price on each route — one way, per traveler in Economy. Distances are in a straight line.
Live price for these dates
The cheapest one-way found recently is for 2 Feb 2027. A live search on this page shows what those dates cost now, for one adult in economy.
Questions about this trip
How much is a one-way flight from Trat to Koh Samui?
The cheapest one-way found recently is $191 with Bangkok Airways, 2 Feb 2027, found 3 days ago. The cheapest one-way fare on each of 3 departure dates is usually $229 to $268.
What is the cheapest month to fly from Trat to Koh Samui?
February 2027 is the cheapest month for a one-way, from $191, 2 Feb 2027, found 3 days ago.
How far ahead should I book a flight from Trat to Koh Samui?
In 46 days of prices between 24 Sept and 11 Nov, one-way fares 90 to 179 days before departure were typically 42% lower than 30 to 59 days before departure.
How long is the flight from Trat to Koh Samui?
The cheapest one-way found recently, with Bangkok Airways on 2 Feb 2027, takes 32 h 35 min with 1 stop.
Which airlines have the cheapest flights from Trat to Koh Samui?
Between 17 Dec and 2 Feb 2027, Bangkok Airways has the cheapest one-way on all 3 departure dates we hold.
Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work