Singapore AirlinesSQ67% on time
Flights SQ442 18:50 daily
live
Direct flights from Singapore (SIN) to Kathmandu (KTM): 7 nonstop departures observed each week across 1 airline. 67% of the last 6 operated flights arrived within 15 minutes of schedule. The median arrival is 7 minutes late. No cancellations were recorded across the 6 tracked flights. The nonstop covers 3,538 km, an estimated 5 hours 2 minutes in the air. Measured by Pro Flight Search from live flight boards at Singapore and Kathmandu. Updated 14 September 2026 at 10:08 UTC.
SIN
Singapore
smooth · +2
KTM
Kathmandu
tracking
3,538 km · ~5h 02m est.
Runs mixed · 1 airline · 7x weekly · nonstop
67% on time
of the last 6 operated SIN → KTM flights arrived within 15 minutes
Median arrival delay is +7 min. 0 of 6 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →
Median arrival+7 minacross the last 6 operated legs
Flight time~5h 02mestimated from route distance
Weekly departures7x1 direct airline on the leg
The week
scheduled departures · origin local time06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Singapore 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 daysHistory
operated legs · board outcomesActual board outcomes rather than schedules, paired departure and arrival per flight and day.
Full board history, day by day →
Airports right now
live boardsnext sweep in 120s
How the Singapore to Kathmandu route actually runs
Pro Flight Search records official board updates for nonstop SIN to KTM 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
Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.
Suggested citation
Pro Flight Search — Singapore (SIN) to Kathmandu (KTM) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/SIN-KTM
SIN to KTM questions
Is SIN–KTM running on time right now?
Smooth skies ahead. Both endpoints currently score the same, route health score 82/100. The airports section above carries the live status and delay window at both ends.
How long is the flight from SIN to KTM?
Great-circle distance is 3,538 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 280–333 min gate-to-gate on this route.
How often does SIN–KTM fly?
Singapore Airlines runs the route with about 7 flights a week (daily). 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 SIN and arrival-side delay at KTM, 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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