Koh Samui to Singapore USM → SIN
Koh Samui Airport (USM) → Changi International Airport (SIN)
The cheapest return found recently is $326 with Scoot, 13 Nov – 16 Nov, found today. The cheapest one-way found recently is $124 with Scoot, 4 Nov, found today.
Return
The cheapest return fare on each of 14 departure dates is usually $305 to $409.
Cheapest return found recently
$326
13 Nov – 16 Nov · Scoot
Koh Samui Airport (USM) → Changi International Airport (SIN)
Leaves 12:00 p.m. · Return leaves 4:15 p.m. · 3 h 50 min of travel, both ways together
out nonstop, back nonstop
found today
Cheapest nonstop return
$326
13 Nov – 16 Nov · Scoot
Koh Samui Airport (USM) → Changi International Airport (SIN)
Leaves 12:00 p.m. · Return leaves 4:15 p.m. · 3 h 50 min of travel, both ways together
out nonstop, back nonstop
found today
Found recently, and the cheapest we hold
$326 13 Nov – 16 Novfound todaySee prices for these dates
$281 24 Oct – 4 Novfound 5 days agoSee prices for these dates
What have prices looked like?
Over 25 days, 24 Sept to 18 Oct, the cheapest return we saw each day was $262 to $281.
At $326, the cheapest return found recently is above that range.
25 days is a short history, so treat this range as an early guide.
Those were the prices on those days, not today's.
Is this a good return price?
Compared with the cheapest return fare on each of 14 departure dates from 24 Oct to 8 Mar 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 3-night return fares leaving within 3 days of 13 Nov to compare.
Every date we hold
17 fares on 14 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 24 Oct – 4 Nov | $281 | Scoot | Koh Samui Airport (USM) → Changi International Airport (SIN) | out nonstop, back nonstop | found 5 days ago | See prices for these dates |
| 3 Nov – 5 Nov | $293 | Scoot | Koh Samui Airport (USM) → Changi International Airport (SIN) | out nonstop, back nonstop | found 5 days ago | See prices for these dates |
| 12 Nov – 19 Nov | $292 | Scoot | Koh Samui Airport (USM) → Changi International Airport (SIN) | out nonstop, back nonstop | found 5 days ago | See prices for these dates |
| 13 Nov – 16 Nov | $326 | Scoot | Koh Samui Airport (USM) → Changi International Airport (SIN) | out nonstop, back nonstop | found today | See prices for these dates |
| 2 Dec – 4 Dec | $298 | Scoot | Koh Samui Airport (USM) → Changi International Airport (SIN) | out nonstop, back nonstop | found 5 days ago | See prices for these dates |
| 10 Dec – 20 Dec | $381 | Scoot | Koh Samui Airport (USM) → Changi International Airport (SIN) | out nonstop, back nonstop | found 6 days ago | See prices for these dates |
| 22 Dec – 24 Dec | $418 | Scoot | Koh Samui Airport (USM) → Changi International Airport (SIN) | out nonstop, back nonstop | found 6 days ago | See prices for these dates |
| 23 Dec – 23 Dec | $491 | Scoot | Koh Samui Airport (USM) → Changi International Airport (SIN) | out nonstop, back nonstop | found 2 days ago | See prices for these dates |
| 29 Dec – 3 Jan 2027 | $453 | Scoot | Koh Samui Airport (USM) → Changi International Airport (SIN) | out nonstop, back nonstop | found 3 days ago | See prices for these dates |
| 13 Jan 2027 – 12 Mar 2027 | $343 | Scoot | Koh Samui Airport (USM) → Changi International Airport (SIN) | out nonstop, back nonstop | found 2 days ago | See prices for these dates |
| 1 Feb 2027 – 13 Feb 2027 | $329 | Scoot | Koh Samui Airport (USM) → Changi International Airport (SIN) | out nonstop, back nonstop | found 3 days ago | See prices for these dates |
| 9 Feb 2027 – 9 Feb 2027 | $576 | Bangkok Airways | Koh Samui Airport (USM) → Changi International Airport (SIN) | out 1 stop, back nonstop | found 5 days ago | See prices for these dates |
| 19 Feb 2027 – 21 Feb 2027 | $327 | Scoot | Koh Samui Airport (USM) → Changi International Airport (SIN) | out nonstop, back nonstop | found 2 days ago | See prices for these dates |
| 8 Mar 2027 – 8 Mar 2027 | $327 | Scoot | Koh Samui Airport (USM) → Changi International Airport (SIN) | out nonstop, back nonstop | found 6 days ago | See prices for these dates |
Which month looks cheapest?
October 2026 is the cheapest month — from $281.
Airlines on the cheapest dates: Scoot, Bangkok Airways.
One-way
The cheapest one-way fare on each of 17 departure dates is usually $128 to $158.
Cheapest one-way found recently
$124
4 Nov · Scoot
Koh Samui Airport (USM) → Changi International Airport (SIN)
Leaves 6:05 p.m. · 2 h trip
stops unknown
found today
Cheapest nonstop one-way
$145
1 Feb 2027 · Scoot
Koh Samui Airport (USM) → Changi International Airport (SIN)
Leaves 8:55 a.m. · 1 h 50 min trip
nonstop
found yesterday
Found recently, and the cheapest we hold
$124 4 Novfound todayOpen this trip
$122 23 Octfound 3 days agoOpen this trip
What have prices looked like?
Over 25 days, 24 Sept to 18 Oct, the cheapest one-way we saw each day was $113 to $125.
25 days is a short history, so treat this range as an early guide.
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 17 departure dates from 23 Oct to 16 Jun 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 4 Nov to compare.
Every date we hold
17 fares on 17 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 23 Oct | $122 | Scoot | Koh Samui Airport (USM) → Changi International Airport (SIN) | nonstop | found 3 days ago | Open this trip |
| 26 Oct | $126 | Scoot | Koh Samui Airport (USM) → Changi International Airport (SIN) | stops unknown | found 6 days ago | Open this trip |
| 4 Nov | $124 | Scoot | Koh Samui Airport (USM) → Changi International Airport (SIN) | stops unknown | found today | Open this trip |
| 21 Nov | $125 | Scoot | Koh Samui Airport (USM) → Changi International Airport (SIN) | nonstop | found 6 days ago | Open this trip |
| 26 Nov | $128 | Scoot | Koh Samui Airport (USM) → Changi International Airport (SIN) | nonstop | found 2 days ago | Open this trip |
| 13 Jan 2027 | $158 | Scoot | Koh Samui Airport (USM) → Changi International Airport (SIN) | nonstop | found 2 days ago | Open this trip |
| 15 Jan 2027 | $145 | Scoot | Koh Samui Airport (USM) → Changi International Airport (SIN) | nonstop | found 2 days ago | Open this trip |
| 17 Jan 2027 | $167 | Scoot | Koh Samui Airport (USM) → Changi International Airport (SIN) | nonstop | found 5 days ago | Open this trip |
| 26 Jan 2027 | $147 | Scoot | Koh Samui Airport (USM) → Changi International Airport (SIN) | nonstop | found 2 days ago | Open this trip |
| 1 Feb 2027 | $145 | Scoot | Koh Samui Airport (USM) → Changi International Airport (SIN) | nonstop | found yesterday | Open this trip |
| 2 Feb 2027 | $143 | Scoot | Koh Samui Airport (USM) → Changi International Airport (SIN) | nonstop | found 5 days ago | Open this trip |
| 18 Feb 2027 | $134 | Scoot | Koh Samui Airport (USM) → Changi International Airport (SIN) | nonstop | found 2 days ago | Open this trip |
| 16 Mar 2027 | $160 | Scoot | Koh Samui Airport (USM) → Changi International Airport (SIN) | nonstop | found 4 days ago | Open this trip |
| 27 Mar 2027 | $196 | Scoot | Koh Samui Airport (USM) → Changi International Airport (SIN) | nonstop | found yesterday | Open this trip |
| 28 May 2027 | $166 | Bangkok Airways | Koh Samui Airport (USM) → Changi International Airport (SIN) | 1 stop | found 2 days ago | Open this trip |
| 9 Jun 2027 | $145 | Scoot | Koh Samui Airport (USM) → Changi International Airport (SIN) | nonstop | found yesterday | Open this trip |
| 16 Jun 2027 | $145 | Scoot | Koh Samui Airport (USM) → Changi International Airport (SIN) | nonstop | found yesterday | Open this trip |
Which month looks cheapest?
October 2026 is the cheapest month — from $122.
Airlines on the cheapest dates: Scoot, Bangkok Airways.
Premium cabin fares from Koh Samui to Singapore
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 13 Nov – 16 Nov in another cabin: Premium economy · Business · First
Today's prices for 4 Nov in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Koh Samui to Singapore?
Return
Fares 7 to 13 days before departure were typically 5% lower than 0 to 6 days before departure.
From the cheapest return each day between 24 Sept and 18 Oct (25 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 | $297 | $271 | +6% | 17 |
| 7–13 days | $281 | $266 | Cheapest seen | 21 |
| 14–29 days | $289 | $262 | +3% | 25 |
| 30–59 days | $290 | $274 | +3% | 25 |
| 60–89 days | $418 | $271 | +49% | 24 |
| 90–179 days | $308 | $278 | +10% | 25 |
| 180+ days | $304 | $304 | +8% | 11 |
One-way
The cheapest fares were 60 to 89 days before departure.
From the cheapest one-way each day between 24 Sept and 18 Oct (25 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 |
|---|---|---|---|---|
| 7–13 days | $123 | $116 | +2% | 10 |
| 14–29 days | $122 | $117 | +1% | 9 |
| 30–59 days | $124 | $124 | +3% | 11 |
| 60–89 days | $121 | $115 | Cheapest seen | 18 |
| 90–179 days | $127 | $113 | +5% | 25 |
| 180+ days | $139 | $127 | +15% | 22 |
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
One-way
Surat Thani → Singapore
94 km from Koh Samui
$203
$79 more than flying from Koh Samui
8 Feb 2027 · URT → SIN · 1 stop
found yesterday
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 return found recently is for 13 Nov – 16 Nov. A live search on this page shows what those dates cost now, for one adult in economy.
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