Route guide

Siem Reap to Sihanoukville (SAI-KOS): Nonstop Upgrade & Award Space

Angkor Air flies the SAI to KOS nonstop about 6 times a week. That's enough service to give you a real choice of departures, though premium seats don't sit unclaimed for long. 2LNR watches every SAI to KOS departure for confirmed upgrade and award space and can alert you when a date you're tracking opens up.

Data current as of July 21, 2026, refreshed on an ongoing basis as new schedules and seats are confirmed.

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6
Nonstop flights a week
196 mi
Nonstop distance
Free
To get started

Confirmed upgrade & award space on every SAI to KOS departure

2LNR tracks confirmed upgrade and award availability on American, Delta, and Alaska and across 30 airlines, segment by segment, date by date. Open the calendar for Siem Reap to Sihanoukville to see which departures have real space, or watch the route and get alerted when space opens.

See real availability

Confirmed upgrade and award seats on each SAI to KOS departure, checked against live inventory so you know what is open before you book.

Set an alert

Premium inventory turns over fast. Watch this route and 2LNR notifies you when space appears on a date you are tracking.

Plan on the map

See SAI to KOS on the interactive route map, with schedules, connections, and route statistics.

Airlines flying Siem Reap to Sihanoukville nonstop

Carriers operating SAI to KOS nonstop in the current schedule. 2LNR tracks confirmed upgrade and award space on each of them.

  • Angkor Air
See SAI to KOS on the interactive map →

Frequently asked questions about SAI to KOS

How far is Sihanoukville from Siem Reap?
SAI to KOS covers about 196 miles nonstop. Flight times vary by aircraft and season; each scheduled departure on this page lists its own times.
Which airlines fly nonstop from SAI to KOS?
Angkor Air is currently the only airline flying SAI to KOS nonstop. 2LNR tracks confirmed upgrade and award space on every Angkor Air departure.
How many flights a week are there from SAI to KOS?
About 6 nonstop flights a week run between Siem Reap and Sihanoukville in the current schedule, operated by Angkor Air. Frequency shifts by season; the calendar on this page reflects what's currently scheduled.
How do I check upgrade or award availability on SAI to KOS?
Open the SAI to KOS calendar on this page to see confirmed upgrade and award space by date. You can also set an alert on the Siem Reap to Sihanoukville route, and 2LNR will notify you when space opens. It's free to start.

Never miss SAI to KOS upgrade or award space

Track confirmed availability, set alerts, and book with confidence. Free to start, no credit card required.

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