Cheap flights from Koh Samui to Nha Trang from $140 USM → CXR
Koh Samui Airport (USM) → Cam Ranh International Airport (CXR)
The cheapest return found recently is $476 with Bangkok Airways, 12 Jan 2027 – 15 Jan 2027, found 3 days ago. The cheapest one-way found recently is $140 with Thai Vietjet Air, 14 Nov, found 4 days ago.
- Cheapest one-way found recently
- $140, found 4 days ago
- Cheapest return found recently
- $476, 12 Jan 2027 to 15 Jan 2027
- Cheapest month to fly
- November 2026, one-way fares from $140 found in the last 7 days
Return
Not enough comparable prices yet for a usual return price.
Cheapest return found recently
$476
12 Jan 2027 – 15 Jan 2027 · Bangkok Airways
Koh Samui Airport (USM) → Cam Ranh International Airport (CXR)
Leaves 9:30 p.m. · Return leaves 10:25 a.m. · 22 h 30 min of travel, both ways together
out 1 stop, back 1 stop
found 3 days ago
Cheapest nonstop return
None seen yet.
Found recently, and the cheapest we hold
$476 12 Jan 2027 – 15 Jan 2027found 3 days agoSee prices for these dates
It is also the cheapest return we hold, of any age.
What have prices looked like?
Over 39 days, 24 Sept to 11 Nov, the cheapest return we saw each day was $353 to $476.
At $476, the cheapest return found recently is at the high end of that range.
Those were the prices on those days, not today's.
Is this a good return price?
Not enough comparable prices yet: we hold return fares on 1 departure date and need at least 3 to say what is usual.
Could nearby dates be cheaper?
We hold no other 3-night return fares leaving within 3 days of 12 Jan 2027 to compare.
Every date we hold
1 fares on 1 departure dates
See every date as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 12 Jan 2027 – 15 Jan 2027 | $476 | Bangkok Airways | Koh Samui Airport (USM) → Cam Ranh International Airport (CXR) | out 1 stop, back 1 stop | found 3 days ago | See prices for these dates |
Airlines on the cheapest dates: Bangkok Airways.
One-way
The cheapest one-way fare on each of 5 departure dates is usually $174 to $196.
Cheapest one-way found recently
$140
14 Nov · Thai Vietjet Air
Koh Samui Airport (USM) → Cam Ranh International Airport (CXR)
Leaves 8:30 a.m. · 5 h trip
stops unknown
found 4 days ago
Cheapest nonstop one-way
None seen yet.
Found recently, and the cheapest we hold
$140 14 Novfound 4 days agoOpen this trip
It is also the cheapest one-way we hold, of any age.
What have prices looked like?
Over 35 days, 26 Sept to 11 Nov, the cheapest one-way we saw each day was $140 to $250.
At $140, the cheapest one-way found recently is at the low end of that range.
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 5 departure dates from 14 Nov to 20 Oct 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 14 Nov to compare.
Every date we hold
5 fares on 5 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 14 Nov | $140 | Thai Vietjet Air | Koh Samui Airport (USM) → Cam Ranh International Airport (CXR) | stops unknown | found 4 days ago | Open this trip |
| 22 Nov | $196 | Scoot | Koh Samui Airport (USM) → Cam Ranh International Airport (CXR) | stops unknown | found 6 days ago | Open this trip |
| 24 Nov | $196 | Thai Vietjet Air | Koh Samui Airport (USM) → Cam Ranh International Airport (CXR) | stops unknown | found 7 days ago | Open this trip |
| 30 Jul 2027 | $174 | Bangkok Airways | Koh Samui Airport (USM) → Cam Ranh International Airport (CXR) | 1 stop | found 4 days ago | Open this trip |
| 20 Oct 2027 | $208 | Bangkok Airways | Koh Samui Airport (USM) → Cam Ranh International Airport (CXR) | 1 stop | found 7 days ago | Open this trip |
Which month looks cheapest?
November 2026 is the cheapest month — from $140.
Airlines on the cheapest dates: Thai Vietjet Air, Bangkok Airways, Scoot.
Premium cabin fares from Koh Samui to Nha Trang
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 12 Jan 2027 – 15 Jan 2027 in another cabin: Premium economy · Business · First
Today's prices for 14 Nov in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Koh Samui to Nha Trang?
Return
Fares 14 to 29 days before departure were typically 12% lower than 0 to 6 days before departure.
From the cheapest return each day between 24 Sept and 11 Nov (39 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 |
|---|---|---|---|---|
| 0–6 days | $420 | $420 | +14% | 8 |
| 7–13 days | $429 | $429 | +16% | 7 |
| 14–29 days | $369 | $353 | Cheapest seen | 11 |
| 30–59 days | $440 | $383 | +19% | 25 |
| 60–89 days | $525 | $476 | +42% | 17 |
| 90–179 days | $430 | $424 | +17% | 16 |
One-way
Not enough history yet: in 35 days of one-way prices, 26 Sept to 11 Nov, fewer than 3 booking ranges had prices on 7 days or more.
Live price for these dates
The cheapest return found recently is for 12 Jan 2027 – 15 Jan 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 return flight from Koh Samui to Nha Trang?
The cheapest return found recently is $476 with Bangkok Airways, 12 Jan 2027 to 15 Jan 2027, found 3 days ago.
How much is a one-way flight from Koh Samui to Nha Trang?
The cheapest one-way found recently is $140 with Thai Vietjet Air, 14 Nov, found 4 days ago. The cheapest one-way fare on each of 5 departure dates is usually $174 to $196.
What is the cheapest month to fly from Koh Samui to Nha Trang?
November 2026 is the cheapest month for a one-way, from $140, 14 Nov, found 4 days ago.
How far ahead should I book a flight from Koh Samui to Nha Trang?
In 39 days of prices between 24 Sept and 11 Nov, return fares 14 to 29 days before departure were typically 12% lower than 0 to 6 days before departure.
Which airlines have the cheapest flights from Koh Samui to Nha Trang?
Between 14 Nov and 20 Oct 2027, Thai Vietjet Air has the cheapest one-way on 2 of the 5 departure dates we hold, Bangkok Airways on 2 and Scoot on 1.
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