ISP (Islip) to RSW (Fort Myers) flights arrive on time 73% of the time. The most reliable airline on this route is Frontier Airlines at 78%. The average delay is 76 minutes. Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Source: Bureau of Transportation Statistics. Updated October 2026.ISP → RSW
ISP (Islip) to RSW (Fort Myers)
ISP → RSW on-time performance by month
23
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JanFebMarAprMayJunJulAugSepOctNovDec
Worse
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This route is delayed fairly often. About 73% of flights arrive on schedule.
Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Accurate?
Frontier Airlines is significantly more reliable on this route at 78% on time vs JetBlue Airways at 63%.
Airline Comparison
Frontier Airlines leads at 78% on time; JetBlue Airways trails at 63%.
Accurate?
Good to know
Departing from ISP
77% on timeTSA is currently ~5 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 ~5 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 October 2026. Source: Bureau of Transportation Statistics.