FI521 Frankfurt am MainFRA · 14:00 ReykjavíkKEF · 15:45
FI521 by Icelandair flies from Frankfurt am Main (FRA) to Reykjavík (KEF) for the Thu, Sep 17 departure.
arrived at KEF · 5 min early
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Early read, sample still buildingConditions at FRA and KEF 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.
Other Frankfurt am Main to Reykjavík flights today
same route · IcelandairIf FI521 is cancelled, this is the other Icelandair nonstop flight from Frankfurt am Main to Reykjavík on the same day, with scheduled departure times in FRA local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How FI521 actually runs
Pro Flight Search has tracked every published board update for FI521 across the FRA and KEF boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 2 completed legs so far: landed -5 min. Not enough to call it.
The verdict above is that record speaking, so it reflects how FI521 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: TFICI, TFICV.
Board clocks recorded as FRA and KEF published them.
Planning around FI521? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — FI521 Frankfurt am Main to Reykjavík on-time performance, measured from the FRA and KEF airport boards.
https://proflightsearch.com/flight/FI521
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