LO521 WarsawWAW · 16:05 PraguePRG · 17:20
LO521 by LOT Polish Airlines flies from Warsaw (WAW) to Prague (PRG) for the Tue, Sep 15 departure.
departs WAW · on schedule
board checked 4m ago · checking again in 45s
Where the minutes go
last 3 operations · gate push → arrivalThe bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at WAW and PRG 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.
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.
Other Warsaw to Prague flights today
same route · LOT Polish AirlinesIf LO521 is cancelled, these are the other LOT Polish Airlines nonstop flights from Warsaw to Prague on the same day, with scheduled departure times in WAW local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How LO521 actually runs
Pro Flight Search has tracked every published board update for LO521 across the WAW and PRG boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 3 completed legs so far: landed -11 min. Not enough to call it.
The verdict above is that record speaking, so it reflects how LO521 operates rather than what the timetable promises. Numbers refresh as new flights operate.
How this operation is measured
Board log
scheduled → actual, per operationBoard clocks recorded as WAW and PRG published them.
Planning around LO521? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — LO521 Warsaw to Prague on-time performance, measured from the WAW and PRG airport boards.
https://proflightsearch.com/flight/LO521
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