Ruili AirlinesDR
Flights DR5030 00:45 Tu Th Sa
live
Direct flights from Preah Sihanouk (KOS) to Kunming (KMG): 3 nonstop departures observed each week across 1 airline. The nonstop covers 1,617 km, an estimated 2 hours 34 minutes in the air. Measured by Pro Flight Search from live flight boards at Preah Sihanouk and Kunming. Updated 17 September 2026 at 14:33 UTC.
KOS
Preah Sihanouk
tracking
KMG
Kunming
tracking
1,617 km · ~2h 34m est.
Tracking · 1 airline · 3x weekly · nonstop
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delay history for KOS → KMG is still building
Flight time~2h 34mestimated from route distance
Weekly departures3x1 direct airline on the leg
The week
scheduled departures · origin local time06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Ruili Airlines
Each mark is a scheduled departure at its origin-local time, observed operating in the last 7 days. Today is highlighted.
Who flies it
observed on the boards · 7 daysAirports right now
live boardsnext sweep in 120s
How the Preah Sihanouk to Kunming route actually runs
Pro Flight Search records official board updates for nonstop KOS to KMG flights through the day: schedules, estimates, gate pushes and actual departures. The verdict above comes from operated flights, so it reflects what this route does rather than what the timetable promises.
Planning around a delay? Live airport delays · Weather delay risk map · Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
Cite this data
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Suggested citation
Pro Flight Search — Preah Sihanouk (KOS) to Kunming (KMG) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/KOS-KMG
KOS to KMG questions
How long is the flight from KOS to KMG?
Great-circle distance is 1,617 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 144–169 min gate-to-gate on this route.
How often does KOS–KMG fly?
Ruili Airlines runs the route with about 3 flights a week (tue, thu, sat). Since one carrier owns the route, a single disruption tends to ripple through the day.
What does the route health score measure?
A blend of departure-side delay at KOS and arrival-side delay at KMG, computed from rolling delay windows (refreshed every 40 minutes) with a daily-rollup fallback. Current MVFR, IFR, or LIFR endpoint weather caps the score when flight rules can limit throughput. Higher is healthier: 100 means operations are clean at both ends.
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