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Cheap flights from Koh Samui to Siem Reap

One-way from $164, found by travellers in the last 7 days. The live price is checked when you book.

Departure
Return
Prices for nearby dates
Wed, Oct 28Any priceThu, Oct 29$235Fri, Oct 30Any priceSat, Oct 31$164Sun, Nov 1Any priceMon, Nov 2Any priceTue, Nov 3Any priceWed, Nov 4Any price

Cheapest one-way tickets

Recent finds on different dates, for 1 adult. Booking opens on Aviasales, which shows baggage, fare rules and the live price.

Cheapest
$164
Bangkok Airways, flight PG 259Found 4 days ago, 1 adult
Check live price
11:10amKoh SamuiSat, Oct 31
Travel time 2h 35m, 1 stopUSMSAI
1:45pmSiem ReapSat, Oct 31
$182
Bangkok Airways, flight PG 144Found 5 days ago, 1 adult
Check live price
2:00pmKoh SamuiWed, Jun 9
Travel time 2h 35m, 1 stopUSMSAI
4:35pmSiem ReapWed, Jun 9
$182
Bangkok Airways, flight PG 144Found 5 days ago, 1 adult
Check live price
2:00pmKoh SamuiFri, Jun 11
Travel time 2h 35m, 1 stopUSMSAI
4:35pmSiem ReapFri, Jun 11
$182
Bangkok Airways, flight PG 100Found 5 days ago, 1 adult
Check live price
6:00amKoh SamuiSat, Jun 12
Travel time 2h 35m, 1 stopUSMSAI
8:35amSiem ReapSat, Jun 12
$186
Bangkok Airways, flight PG 102Found 6 days ago, 1 adult
Check live price
7:00amKoh SamuiWed, Mar 10
Travel time 2h 20m, 1 stopUSMSAI
9:20amSiem ReapWed, Mar 10

Round trips

The cheapest return tickets found recently, price for the whole trip.

Plan the rest of the trip

  • Mobile data in CambodiaTravel eSIM from $4, installed before you fly.
    Compare plans
  • Getting from the airportTransfers and car hire in Siem Reap, booked ahead at a fixed price.
    See options
  • Travel insuranceTravel insurance quotes for Cambodia from EKTA; check what each policy covers.
    Get a quote
  • Flight delayed?Delayed or cancelled? See which passenger rights cover this route.
    Check

Lowest fares by month

In the fares found this week, October has the lowest: from $164 one-way, against $201 in January 2027. Pick a month to see its cheapest date.

  1. Oct$164
  2. Novno fares yet
  3. Decno fares yet
  4. Jan$201
  5. Febno fares yet
  6. Mar$186
  7. Aprno fares yet
  8. Mayno fares yet
  9. Jun$182
  10. Julno fares yet
  11. Augno fares yet
  12. Sepno fares yet
$0$100$200$300$164OctNovDecJanFebMarAprMayJunJulAugSep
Show as a table
MonthCheapest one-wayDateStops
October$164Sat, Oct 311 stop
November—
December—
January 2027$201Wed, Jan 131 stop
February 2027—
March 2027$186Wed, Mar 101 stop
April 2027—
May 2027—
June 2027$182Wed, Jun 91 stop
July 2027—
August 2027—
September 2027—

Fares and weather by month

The lowest one-way fare found for each month, next to the weather in Siem Reap. Average daily high and low and monthly precipitation, 1997–2010 normals.

Oct2026NovDecJan2027FebMarAprMayJunJulAugSep
Lowest fare$164––$201–$186––$182–––
High °C32°31°31°32°34°35°36°35°34°33°32°32°
Low °C25°23°21°20°22°24°25°25°25°25°25°25°
Precipitation mm200517452957150214193209288

Source: Siem Reap on Wikipedia, CC BY-SA 4.0.

Questions travellers ask

What is the cheapest month to fly from Koh Samui to Siem Reap?

In the fares found this week, October has the lowest: from $164 one-way, against $201 in January 2027.

What is the weather in Siem Reap in October?

In October, the cheapest month to fly, the average daily high in Siem Reap is 32 °C and the low 25 °C.

Are there direct flights from Koh Samui to Siem Reap?

None of the fares found recently are nonstop. The cheapest options have at least one stop.

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