Cheap flights from Bangkok to Sihanoukville from $511 BKK, DMK → KOS
Suvarnabhumi Airport (BKK), Don Mueang International Airport (DMK) → Sihanouk International Airport (KOS)
The cheapest return found recently is $511 with Vietnam Airlines, 11 Dec – 23 Dec, found 2 days ago.
- Cheapest return found recently
- $511, 11 Dec to 23 Dec
- Usual return price
- $473 to $504
- Cheapest month to fly
- January 2027, return fares from $418 found in the last 7 days
Return
The cheapest return fare on each of 6 departure dates is usually $473 to $504.
Cheapest return found recently
$511
11 Dec – 23 Dec · Vietnam Airlines
Suvarnabhumi Airport (BKK) → Sihanouk International Airport (KOS)
Leaves 8:50 p.m. · Return leaves 1:50 p.m. · 17 h 25 min of travel, both ways together
out 1 stop, back 1 stop
found 2 days ago
Cheapest nonstop return
None seen yet.
Found recently, and the cheapest we hold
$511 11 Dec – 23 Decfound 2 days agoSee prices for these dates
$418 13 Jan 2027 – 3 Feb 2027found 5 days agoSee prices for these dates
What have prices looked like?
Over 48 days, 24 Sept to 11 Nov, the cheapest return we saw each day was $417 to $494.
At $511, the cheapest return found recently is above that range.
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 6 departure dates from 17 Nov to 20 Aug 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 12-night return fares leaving within 3 days of 11 Dec to compare.
Every date we hold
8 fares on 6 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 17 Nov – 22 Dec | $484 | AirAsia | Don Mueang International Airport (DMK) → Sihanouk International Airport (KOS) | out 1 stop, back 1 stop | found 3 days ago | See prices for these dates |
| 11 Dec – 23 Dec | $511 | Vietnam Airlines | Suvarnabhumi Airport (BKK) → Sihanouk International Airport (KOS) | out 1 stop, back 1 stop | found 2 days ago | See prices for these dates |
| 13 Jan 2027 – 3 Feb 2027 | $418 | 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 |
| 22 Feb 2027 – 23 Feb 2027 | $470 | Thai 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 |
| 21 Apr 2027 – 6 May 2027 | $511 | 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 |
| 20 Aug 2027 – 24 Aug 2027 | $481 | AirAsia | Don Mueang International Airport (DMK) → Sihanouk International Airport (KOS) | out 1 stop, back 1 stop | found 7 days ago | See prices for these dates |
Which month looks cheapest?
January 2027 is the cheapest month — from $418.
Airlines on the cheapest dates: AirAsia, Vietnam Airlines, 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 11 Dec – 23 Dec 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 11 Nov (48 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 | $470 | $425 | +5% | 28 |
| 60–89 days | $490 | $418 | +10% | 16 |
| 90–179 days | $480 | $417 | +7% | 40 |
| 180+ days | $447 | $436 | Cheapest seen | 20 |
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
$119
$392 less than flying to Sihanoukville
1 Dec – 24 Dec · BKK → PQC · out nonstop, back nonstop
found 2 days ago
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
$74
24 Jun 2027 · DMK → PQC · nonstop
found 2 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 11 Dec – 23 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 Bangkok to Sihanoukville?
The cheapest return found recently is $511 with Vietnam Airlines, 11 Dec to 23 Dec, found 2 days ago. The cheapest return we hold, of any age, is $418 with AirAsia, 13 Jan 2027 to 3 Feb 2027, found 5 days ago. The cheapest return fare on each of 6 departure dates is usually $473 to $504.
What is the cheapest month to fly from Bangkok to Sihanoukville?
January 2027 is the cheapest month for a return, from $418, 13 Jan 2027 to 3 Feb 2027, found 5 days ago.
How far ahead should I book a flight from Bangkok to Sihanoukville?
In 48 days of prices between 24 Sept and 11 Nov, return fares were cheapest 180 or more days before departure.
Which airlines have the cheapest flights from Bangkok to Sihanoukville?
Between 17 Nov and 20 Aug 2027, AirAsia has the cheapest return on 4 of the 6 departure dates we hold, Vietnam Airlines on 1 and Thai AirAsia 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