KL621 AmsterdamAMS · 17:05 AtlantaATL · 20:25
KL621 by KLM flies from Amsterdam (AMS) to Atlanta (ATL) for the Tue, Sep 8 departure.
en route from AMS to ATL
board checked 204m ago · checking again in 45s
Board estimate · gate and arrival times. Off blocks 17:34 · typical taxi-out at AMS ≈ 7.9 min. No receiver coverage over open ocean.
Where the minutes go
last 7 operations · gate push → arrivalThe bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.
The last 30 days
arrival outcome per operationmedian arrival −10 min · 1 cancelled · 15 operations tracked
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Early read, sample still buildingConditions at AMS and ATL are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. For this route and airline, under conditions like today's, over the last 90 days. This route's tracked sample is still thin — treat these as an early read, not a precise forecast.
Pro Flight Search tracking, 90 days · the weather × delay correlation study → · live weather risk by airport →
When it flies
scheduled departuresEach mark is a scheduled departure at its origin-local time. Today is highlighted.
How KL621 actually runs
Pro Flight Search has tracked every published board update for KL621 across the AMS and ATL boards: schedule changes, gate pushes and actual clocks. Usually lands ~10 min early. Based on 11 confirmed landings · 10/11 within 15 min of schedule. Pushes back late but makes up time in the air.
The verdict above is that record speaking, so it reflects how KL621 operates rather than what the timetable promises. Numbers refresh as new flights operate.
How this operation is measured
Board log
scheduled → actual, per operationAircraft
Recent tails: PH-BVB, PH-BVP, PH-BVV, PH-BVU.
Board clocks recorded as AMS and ATL published them.
Planning around KL621? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — KL621 Amsterdam to Atlanta on-time performance, measured from the AMS and ATL airport boards.
https://proflightsearch.com/flight/KL621
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