F99878 Fort LauderdaleFLL San JuanSJU
F99878 by Frontier Airlines flies from Fort Lauderdale (FLL) to San Juan (SJU).
scheduled from FLL
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at FLL and SJU 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 Fort Lauderdale to San Juan flights today
same route · Frontier AirlinesIf F99878 is cancelled, this is the other Frontier Airlines nonstop flight from Fort Lauderdale to San Juan on the same day, with scheduled departure times in FLL local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How F99878 actually runs
Pro Flight Search has tracked every published board update for F99878 across the FLL and SJU boards: schedule changes, gate pushes and actual clocks. Combined risk score: 50.0/100. Based on airport operations, weather, and cached board history at FLL and SJU.
The verdict above is that record speaking, so it reflects how F99878 operates rather than what the timetable promises. Numbers refresh as new flights operate.
Planning around F99878? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — F99878 Fort Lauderdale to San Juan on-time performance, measured from the FLL and SJU airport boards.
https://proflightsearch.com/flight/F99878
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