Cheap flights from Siem Reap to Sihanoukville from $156 SAI → KOS

Found recently, and the cheapest we hold

What have prices looked like?

Over 49 days, 24 Sept to 11 Nov, the cheapest return we saw each day was $158 to $254.

Those were the prices on those days, not today's.

Could nearby dates be cheaper?

We hold no other 10-night return fares leaving within 3 days of 29 Dec to compare.

Every date we hold

14 fares on 12 departure dates

Which month looks cheapest?

May 2027 is the cheapest month — from $241.

Found recently, and the cheapest we hold

What have prices looked like?

Over 49 days, 24 Sept to 11 Nov, the cheapest one-way we saw each day was $80 to $140.

At $156, the cheapest one-way found recently is above that range.

Those were the prices on those days, not today's.

Could nearby dates be cheaper?

We hold no other one-way fares leaving within 3 days of 25 Jan 2027 to compare.

Every date we hold

8 fares on 8 departure dates

Which month looks cheapest?

July 2027 is the cheapest month — from $122.

Return

Fares 90 to 179 days before departure were typically 10% 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.

One-way

The cheapest fares were 0 to 6 days before departure.

From the cheapest one-way 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.

How much is a return flight from Siem Reap to Sihanoukville?

The cheapest return found recently is $249 with Air Cambodia, 29 Dec to 8 Jan 2027, found 2 days ago. The cheapest return we hold, of any age, is $241 with Air Cambodia, 2 May 2027 to 3 May 2027, found 3 days ago. The cheapest return fare on each of 12 departure dates is usually $268 to $452.

How much is a one-way flight from Siem Reap to Sihanoukville?

The cheapest one-way found recently is $156 with Air Cambodia, 25 Jan 2027, found 5 days ago. The cheapest one-way we hold, of any age, is $122 with Air Cambodia, 15 Jul 2027, found 7 days ago. The cheapest one-way fare on each of 8 departure dates is usually $138 to $147.

What is the cheapest month to fly from Siem Reap to Sihanoukville?

May 2027 is the cheapest month for a return, from $241, 2 May 2027 to 3 May 2027, found 3 days ago. July 2027 is the cheapest month for a one-way, from $122, 15 Jul 2027, found 7 days ago.

How far ahead should I book a flight from Siem Reap to Sihanoukville?

In 49 days of prices between 24 Sept and 11 Nov, return fares 90 to 179 days before departure were typically 10% lower than 0 to 6 days before departure. One-way fares were cheapest 0 to 6 days before departure.

Is there a direct flight from Siem Reap to Sihanoukville?

Yes, the cheapest nonstop return found recently is $249 with Air Cambodia, 29 Dec to 8 Jan 2027, found 2 days ago. The cheapest nonstop one-way found recently is $156 with Air Cambodia, 25 Jan 2027, found 5 days ago.

How long is the flight from Siem Reap to Sihanoukville?

The cheapest nonstop one-way found recently, with Air Cambodia on 25 Jan 2027, takes 1 h 5 min from Siem Reap International Airport (SAI) to Sihanouk International Airport (KOS).

Which airlines have the cheapest flights from Siem Reap to Sihanoukville?

Between 22 Nov and 2 May 2027, Air Cambodia has the cheapest return on 11 of the 12 departure dates we hold, and AirAsia Cambodia on 1. Between 27 Dec and 15 Jul 2027, Air Cambodia has the cheapest one-way on all 8 departure dates we hold.