Most delayed flights from ISP: every route ranked

5 regularly flown nonstop routes from Long Island MacArthur Airport, worst on-time record first (Aug 2025 – Jul 2026). Routes with fewer than 360 flights in the period are listed separately.

#	Destination	On time	Cancelled	Avg delay	Airlines	Flights
1	ISP → FLL Fort Lauderdale, FL	69%	1.7%	26 min	3	405
2	ISP → PBI West Palm Beach/Palm Beach, FL	72%	2.1%	21 min	3	1,221
3	ISP → TPA Tampa, FL	72%	3.8%	19 min	3	445
4	ISP → MCO Orlando, FL	73%	2.0%	20 min	3	1,424
5	ISP → BWI Baltimore, MD	85%	1.5%	11 min	1	1,235

Less frequent routes

Too few flights for a reliable ranking.

ISP → MYR (Myrtle Beach) 121 flts
ISP → RSW (Fort Myers) 111 flts
ISP → MIA (Miami) 4 flts

Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. How we calculate this.