Bangkok to Sihanoukville DMK → KOS
Don Mueang International Airport (DMK) → Sihanouk International Airport (KOS)
The cheapest return found recently is $417 with AirAsia, 2 Mar 2027 – 20 Mar 2027, found today.
Return
The cheapest return fare on each of 8 departure dates is usually $445 to $515.
Cheapest return found recently
$417
2 Mar 2027 – 20 Mar 2027 · AirAsia
Don Mueang International Airport (DMK) → Sihanouk International Airport (KOS)
Leaves 9:30 p.m. · Return leaves 12:15 p.m. · 24 h 5 min of travel, both ways together
out 1 stop, back 1 stop
found today
Cheapest nonstop return
None seen yet.
Found recently, and the cheapest we hold
$417 2 Mar 2027 – 20 Mar 2027found todaySee prices for these dates
It is also the cheapest return we hold, of any age.
What have prices looked like?
Over 24 days, 24 Sept to 18 Oct, the cheapest return we saw each day was $425 to $485.
At $417, the cheapest return found recently is below that range.
24 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 8 departure dates from 7 Dec to 25 Apr 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 18-night return fares leaving within 3 days of 2 Mar 2027 to compare.
Every date we hold
12 fares on 8 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 7 Dec – 17 Dec | $517 | AirAsia | Don Mueang International Airport (DMK) → Sihanouk International Airport (KOS) | out 1 stop, back 1 stop | found yesterday | See prices for these dates |
| 23 Dec – 17 Jan 2027 | $490 | Thai AirAsia | Don Mueang International Airport (DMK) → Sihanouk International Airport (KOS) | out 1 stop, back 1 stop | found yesterday | See prices for these dates |
| 5 Feb 2027 – 15 Feb 2027 | $440 | Thai AirAsia | Don Mueang International Airport (DMK) → Sihanouk International Airport (KOS) | out 1 stop, back 1 stop | found 5 days ago | See prices for these dates |
| 9 Feb 2027 – 11 Mar 2027 | $514 | AirAsia | Don Mueang International Airport (DMK) → Sihanouk International Airport (KOS) | out 1 stop, back 1 stop | found 6 days ago | See prices for these dates |
| 10 Feb 2027 – 10 Mar 2027 | $478 | AirAsia | Don Mueang International Airport (DMK) → Sihanouk International Airport (KOS) | out 1 stop, back 1 stop | found 6 days ago | See prices for these dates |
| 2 Mar 2027 – 20 Mar 2027 | $417 | AirAsia | Don Mueang International Airport (DMK) → Sihanouk International Airport (KOS) | out 1 stop, back 1 stop | found today | See prices for these dates |
| 12 Apr 2027 – 2 May 2027 | $527 | AirAsia | Don Mueang International Airport (DMK) → Sihanouk International Airport (KOS) | out 1 stop, back 1 stop | found 4 days ago | See prices for these dates |
| 25 Apr 2027 – 9 May 2027 | $447 | AirAsia | Don Mueang International Airport (DMK) → Sihanouk International Airport (KOS) | out 1 stop, back 1 stop | found 6 days ago | See prices for these dates |
Which month looks cheapest?
March 2027 is the cheapest month — from $417.
Airlines on the cheapest dates: AirAsia, Thai AirAsia.
Premium cabin fares from Bangkok to Sihanoukville
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 Mar 2027 – 20 Mar 2027 in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Bangkok to Sihanoukville?
Return
The cheapest fares were 180 or more days before departure.
From the cheapest return each day between 24 Sept and 18 Oct (24 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 | $458 | $425 | +5% | 18 |
| 90–179 days | $482 | $440 | +10% | 16 |
| 180+ days | $436 | $436 | Cheapest seen | 13 |
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
Return
Bangkok → Phu Quoc
68 km from Sihanoukville
$117
$300 less than flying to Sihanoukville
19 Nov – 24 Nov · BKK → PQC · out nonstop, back nonstop
found 3 hours ago
Pattaya → Sihanoukville
101 km from Bangkok
$849
$432 more than flying from Bangkok
10 Nov – 15 Nov · UTP → KOS · out 2 stops, back 2 stops
found yesterday
Cheapest recent price on each route — round trip, per traveler in Economy. Distances are in a straight line.
One-way
Bangkok → Phu Quoc
68 km from Sihanoukville
$67
7 Jun 2027 · DMK → PQC · nonstop
found 6 hours 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 2 Mar 2027 – 20 Mar 2027. 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