Cheap flights from Koh Samui to Denpasar (Bali) from $143 USM → DPS
Koh Samui Airport (USM) → Ngurah Rai International Airport (DPS)
The cheapest return found recently is $450 with Scoot, 6 Dec – 13 Dec, found 3 days ago. The cheapest one-way found recently is $143 with Indonesia AirAsia, 15 Nov, found 2 days ago.
- Cheapest one-way found recently
- $143, found 2 days ago
- Cheapest return found recently
- $450, 6 Dec to 13 Dec
- Usual return price
- $437 to $481
- Cheapest month to fly
- November 2026, return fares from $356 found in the last 7 days
Return
The cheapest return fare on each of 10 departure dates is usually $437 to $481.
Cheapest return found recently
$450
6 Dec – 13 Dec · Scoot
Koh Samui Airport (USM) → Ngurah Rai International Airport (DPS)
Leaves 7:50 p.m. · Return leaves 10:30 a.m. · 29 h 50 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
$450 6 Dec – 13 Decfound 3 days agoSee prices for these dates
$356 23 Nov – 26 Novfound 6 days agoSee prices for these dates
What have prices looked like?
Over 49 days, 24 Sept to 11 Nov, the cheapest return we saw each day was $337 to $480.
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 10 departure dates from 13 Nov to 3 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 7-night return fares leaving within 3 days of 6 Dec to compare.
Every date we hold
11 fares on 10 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 13 Nov – 17 Nov | $437 | Scoot | Koh Samui Airport (USM) → Ngurah Rai International Airport (DPS) | out 1 stop, back 1 stop | found 7 days ago | See prices for these dates |
| 22 Nov – 29 Nov | $466 | Bangkok Airways | Koh Samui Airport (USM) → Ngurah Rai International Airport (DPS) | out 1 stop, back 1 stop | found 7 days ago | See prices for these dates |
| 23 Nov – 26 Nov | $356 | Scoot | Koh Samui Airport (USM) → Ngurah Rai International Airport (DPS) | out 1 stop, back 1 stop | found 6 days ago | See prices for these dates |
| 6 Dec – 13 Dec | $450 | Scoot | Koh Samui Airport (USM) → Ngurah Rai International Airport (DPS) | out 1 stop, back 1 stop | found 3 days ago | See prices for these dates |
| 5 Jan 2027 – 12 Jan 2027 | $484 | Bangkok Airways | Koh Samui Airport (USM) → Ngurah Rai International Airport (DPS) | out 1 stop, back 1 stop | found 7 days ago | See prices for these dates |
| 9 Feb 2027 – 13 Feb 2027 | $496 | Bangkok Airways | Koh Samui Airport (USM) → Ngurah Rai International Airport (DPS) | out 1 stop, back 1 stop | found 7 days ago | See prices for these dates |
| 10 Feb 2027 – 14 Feb 2027 | $509 | Bangkok Airways | Koh Samui Airport (USM) → Ngurah Rai International Airport (DPS) | out 1 stop, back 1 stop | found 7 days ago | See prices for these dates |
| 11 Feb 2027 – 20 Feb 2027 | $471 | Bangkok Airways | Koh Samui Airport (USM) → Ngurah Rai International Airport (DPS) | out 1 stop, back 1 stop | found 5 days ago | See prices for these dates |
| 23 Feb 2027 – 2 Mar 2027 | $406 | Scoot | Koh Samui Airport (USM) → Ngurah Rai International Airport (DPS) | out 1 stop, back 1 stop | found 4 days ago | See prices for these dates |
| 3 Mar 2027 – 4 Mar 2027 | $437 | Scoot | Koh Samui Airport (USM) → Ngurah Rai International Airport (DPS) | out 1 stop, back 1 stop | found 6 days ago | See prices for these dates |
Which month looks cheapest?
November 2026 is the cheapest month — from $356.
Airlines on the cheapest dates: Scoot, Bangkok Airways.
One-way
The cheapest one-way fare on each of 4 departure dates is usually $150 to $166.
Cheapest one-way found recently
$143
15 Nov · Indonesia AirAsia
Koh Samui Airport (USM) → Ngurah Rai International Airport (DPS)
Leaves 3:05 p.m. · 8 h 30 min trip
stops unknown
found 2 days ago
Cheapest nonstop one-way
None seen yet.
Found recently, and the cheapest we hold
$143 15 Novfound 2 days agoOpen this trip
It is also the cheapest one-way we hold, of any age.
What have prices looked like?
Over 47 days, 24 Sept to 11 Nov, the cheapest one-way we saw each day was $111 to $271.
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 4 departure dates from 13 Nov to 18 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?
No. We hold one-way fares on 2 other departure dates within 3 days of 15 Nov, and none is cheaper.
Every date we hold
5 fares on 4 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 13 Nov | $152 | Indonesia AirAsia | Koh Samui Airport (USM) → Ngurah Rai International Airport (DPS) | stops unknown | found 4 days ago | Open this trip |
| 14 Nov | $153 | Indonesia AirAsia | Koh Samui Airport (USM) → Ngurah Rai International Airport (DPS) | stops unknown | found 6 days ago | Open this trip |
| 15 Nov | $143 | Indonesia AirAsia | Koh Samui Airport (USM) → Ngurah Rai International Airport (DPS) | stops unknown | found 2 days ago | Open this trip |
| 18 Jun 2027 | $203 | Bangkok Airways | Koh Samui Airport (USM) → Ngurah Rai International Airport (DPS) | 1 stop | found 5 days ago | Open this trip |
Which month looks cheapest?
November 2026 is the cheapest month — from $143.
Airlines on the cheapest dates: Indonesia AirAsia, Bangkok Airways.
Premium cabin fares from Koh Samui to Denpasar (Bali)
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 6 Dec – 13 Dec in another cabin: Premium economy · Business · First
Today's prices for 15 Nov in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Koh Samui to Denpasar (Bali)?
Return
Fares 14 to 29 days before departure were typically 18% lower than 0 to 6 days before departure.
From the cheapest return each day between 24 Sept and 11 Nov (49 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 | $477 | $408 | +22% | 27 |
| 7–13 days | $437 | $356 | +12% | 11 |
| 14–29 days | $390 | $337 | Cheapest seen | 37 |
| 30–59 days | $413 | $337 | +6% | 29 |
| 60–89 days | $566 | $386 | +45% | 47 |
| 90–179 days | $419 | $406 | +7% | 29 |
| 180+ days | $491 | $430 | +26% | 31 |
One-way
Fares 7 to 13 days before departure were typically 12% lower than 0 to 6 days before departure.
From the cheapest one-way each day between 24 Sept and 11 Nov (47 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 | $199 | $143 | +14% | 11 |
| 7–13 days | $175 | $153 | Cheapest seen | 10 |
| 14–29 days | $203 | $111 | +16% | 11 |
| 90–179 days | $229 | $229 | +31% | 12 |
| 180+ days | $221 | $199 | +26% | 41 |
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
Return
Surat Thani → Denpasar (Bali)
94 km from Koh Samui
$404
$46 less than flying from Koh Samui
27 Jan 2027 – 3 Feb 2027 · URT → DPS · out 2 stops, back 2 stops
found 2 days ago
Cheapest recent price on each route — round trip, per traveler in Economy. Distances are in a straight line.
One-way
Surat Thani → Denpasar (Bali)
94 km from Koh Samui
$186
$43 more than flying from Koh Samui
25 Feb 2027 · URT → DPS · 2 stops
found 5 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 return found recently is for 6 Dec – 13 Dec. 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 Denpasar (Bali)?
The cheapest return found recently is $450 with Scoot, 6 Dec to 13 Dec, found 3 days ago. The cheapest return we hold, of any age, is $356 with Scoot, 23 Nov to 26 Nov, found 6 days ago. The cheapest return fare on each of 10 departure dates is usually $437 to $481.
How much is a one-way flight from Koh Samui to Denpasar (Bali)?
The cheapest one-way found recently is $143 with Indonesia AirAsia, 15 Nov, found 2 days ago. The cheapest one-way fare on each of 4 departure dates is usually $150 to $166.
What is the cheapest month to fly from Koh Samui to Denpasar (Bali)?
November 2026 is the cheapest month for a return, from $356, 23 Nov to 26 Nov, found 6 days ago. It is the cheapest month for a one-way too, from $143, 15 Nov, found 2 days ago.
How far ahead should I book a flight from Koh Samui to Denpasar (Bali)?
In 49 days of prices between 24 Sept and 11 Nov, return fares 14 to 29 days before departure were typically 18% lower than 0 to 6 days before departure. In 47 days of prices between 24 Sept and 11 Nov, one-way fares 7 to 13 days before departure were typically 12% lower than 0 to 6 days before departure.
Which airlines have the cheapest flights from Koh Samui to Denpasar (Bali)?
Between 13 Nov and 3 Mar 2027, Scoot has the cheapest return on 5 of the 10 departure dates we hold, and Bangkok Airways on 5. Between 13 Nov and 18 Jun 2027, Indonesia AirAsia has the cheapest one-way on 3 of the 4 departure dates we hold, and Bangkok Airways 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
