ISP (Islip) to RSW (Fort Myers) flights arrive on time 67% of the time. The most reliable airline on this route is Frontier Airlines at 75%. The average delay is 73 minutes. Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Source: Bureau of Transportation Statistics. Updated August 2026.ISP → RSW
ISP (Islip) to RSW (Fort Myers)
ISP → RSW on-time performance by month
24
25
26
JanFebMarAprMayJunJulAugSepOctNovDec
Worse
Better
This route is delayed fairly often. About 67% of flights arrive on schedule.
Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Accurate?
Frontier Airlines edges out JetBlue Airways on this route — 75% vs 63% on time.
Airline Comparison
Frontier Airlines leads at 75% on time; JetBlue Airways trails at 63%.
Accurate?
Good to know
Departing from ISP
77% on timeTSA is currently ~20 min. Best time: 4 AM (about 5 min).
Arriving at RSW
79% on timeWhen flights into RSW are late, the average delay is 75 minutes. Build buffer if you have ground plans.
If connecting at RSW: TSA is ~21 min right now. Allow at least 60 minutes for a domestic connection.
Flight cancelled or delayed?
Check what Frontier Airlines owes you — refund rights, action plan, complaint email. Free.
Flying out of ISP? We'll brief you.
Delays, TSA, weather, gates — we'll let you know if something matters.
Know someone flying soon?
Send them the link — delay data, TSA waits, weather, all free.
Data last updated August 2026. Source: Bureau of Transportation Statistics.