Koh Samui to Siem Reap flights
Routavio compares airline fares from several flight booking sites. The lowest one-way fare it found for Koh Samui to Siem Reap is €171 with Bangkok Airways (checked on 30 Oct 2026).
Your next trip, last seen at €171
Below averageBangkok Airways · 1 stop · One wayWhen to fly
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The lowest fare we observed for each month. Open a month to see its days, then pick your outbound and return. A day with no price is one we will search for you.
One-way fare
- Lowest observed
- €171, departing 14 Nov 2026 (Last checked: 30 Oct 2026)One-way fare · Priced departure days checked in the last 14 days: 70Check live prices for this route
- Airlines seen
- Bangkok Airways, Scoot, Thai AirAsia
- Typical journey time
- 7h 50m
About this route
Explore the fares we observed from Koh Samui to Siem Reap. Prices move often, so pick your dates to see the latest options.
- Route distance
- 592 km
- Typical journey time
- 7h 50m
- Seen on fares with a connection
- Bangkok Airways, Thai AirAsia
Route-level information; individual journeys vary.
We have not observed non-stop service on this route; the fares shown include at least one stop.
A clearer picture of your fare
If the observed fare for this date drops, we will email you. At most one message a day.
Airport to city: straight-line distance
- Samui International Airport (USM) → Koh Samui, city gazetteer reference point (9.5553, 100.0628): ≈ 1 km.
- Siem Reap-Angkor International Airport (SAI) → Siem Reap, city gazetteer reference point (13.3633, 103.8564): ≈ 40 km.
Approximate distances calculated from coordinates, not road distances or travel times. These airports serve the city; they are not confirmed endpoints of an offer.
Lowest fare by departure month
Cheapest month from Koh Samui to Siem Reap: November 2026, from €171 (checked 30 Oct 2026).
| Month | Lowest fare | Priced days |
|---|---|---|
| November 2026 | €171 | 29 |
| December 2026 | €182 | 24 |
| January 2027 | €222 | 16 |
Lowest fare by day of the week
Cheapest day of the week from Koh Samui to Siem Reap: Monday, from €171 (checked 30 Oct 2026).
| Day | Lowest fare | Priced days |
|---|---|---|
| Monday | €171 | 11 |
| Tuesday | €171 | 9 |
| Wednesday | €176 | 12 |
| Thursday | €194 | 7 |
| Friday | €183 | 11 |
| Saturday | €171 | 8 |
| Sunday | €180 | 11 |
One-way fares checked in the last 14 days. Each figure is the lowest priced departure day we saw, not a guaranteed fare.
Lowest fare by days before departure
Lowest fare from Koh Samui to Siem Reap by days until departure (8 to 30 days): €171 (checked 30 Oct 2026).
| Days before departure | Lowest fare | Priced days |
|---|---|---|
| 0 to 7 days | €172 | 7 |
| 8 to 30 days | €171 | 22 |
| 31 to 60 days | €182 | 24 |
| 61 days or more | €222 | 16 |
One-way fares checked in the last 14 days. Each figure is the lowest stored fare for that distance to departure, not a price forecast.
Fares for different departure dates, checked now; not a guide to when to book.
Frequently asked
How much is a flight from Koh Samui to Siem Reap?
The lowest fare Routavio has observed is €171, found on 30 Oct 2026. Prices move, so read it as a floor rather than a quote.
When is the cheapest month to fly from Koh Samui to Siem Reap?
Cheapest month from Koh Samui to Siem Reap: November 2026, from €171 (checked 30 Oct 2026).
Are there direct flights from Koh Samui to Siem Reap?
Our data holds no non-stop flight from Koh Samui to Siem Reap. The fares on this page include at least one stop.
Which airlines fly from Koh Samui to Siem Reap?
Routavio has seen these carriers on the route: Bangkok Airways, Scoot, Thai AirAsia.
How long does the flight from Koh Samui to Siem Reap take?
Across the 77 fares Routavio observed, the average journey time is 9h 22m, including any stops. Individual departures vary; the fastest observed flight is listed in the route facts above.
How many of the observed Koh Samui to Siem Reap fares were non-stop?
None of the 79 fares we observed was non-stop; every one included at least one stop. That describes our observations, not every flight that operates.
Which day of the week is cheapest from Koh Samui to Siem Reap?
Cheapest day of the week from Koh Samui to Siem Reap: Monday, from €171 (checked 30 Oct 2026).
How observed prices work, what "No data" means and what a fare includes: Read the flight price guide · Price and schedule freshness on Routavio
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Recently observed fares. Prices may change.