Itineraries flown on 20+ days in the Jun 6 – Jul 31, 2026 schedule · each leg’s record Aug 2025 – Jul 2026

The nonstop is quickest: JetBlue FLL → ISP (2h 50m), on time 72% of the time. Southwest via BWI (5h 25m) is more reliable, 90%, but takes 2h 35m longer.

Nonstops (seasonal or thin)


JetBlue	FLL	ISP	2h 50m	73%	2.1%	384	Flying now
Frontier	FLL	ISP	2h 52m	44%few flights	5.3%	19	Not flying now
Southwest	FLL	ISP	–	33%few flights	0.0%	3	Not flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Islip on time. Total trip = scheduled departure to arrival, layover included. Layovers up to 4 hours. Pick a connection for the details.


Southwest Details →	FLL 06:25 → BWI 08:55WN 396	1h 45m Baltimore	BWI 10:40 → ISP 11:50WN 4691	5h 25m	98%	90%
Southwest Details →	FLL 08:00 → BWI 10:30WN 1651	2h 50m Baltimore	BWI 13:20 → ISP 14:30WN 966	6h 30m	100%	74%
Southwest Details →	FLL 10:45 → BWI 13:15WN 1853	2h 50m Baltimore	BWI 16:05 → ISP 17:15WN 4126	6h 30m	100%	63%
Tight connection: often missed
Southwest Details →	FLL 17:50 → BWI 20:20WN 999	2h 05m Baltimore	BWI 22:25 → ISP 23:35WN 4321	5h 50m	54%	29%

Mixing airlines

One ticketMiss it and the airline rebooks you; bags go through. 45 min is enough.

Separate ticketsMiss it and you buy a new ticket. Re-check bags, clear security again: we require 90 min.


JetBlue B6 2548 FLL 10:00 → MCO Frontier F9 3942 MCO 13:08 → ISP Connection details →	2h 00m	5h 56m	87%	70%
Frontier F9 4412 FLL 09:28 → BWI Southwest WN 4126 BWI 16:05 → ISP Connection details →	3h 55m	7h 47m	98%	58%
JetBlue B6 1005 FLL 13:23 → TPA Frontier F9 3324 TPA 16:09 → ISP Connection details →	1h 35m	5h 38m	55%	39%

Rank all connections, any airlines →

Regional partners count as the airline that sells them: SkyWest flying Delta Connection is one Delta ticket.

How these are worked out. Makes the connection: share of the last year’s flights where the first flight arrived with at least 45 minutes to spare (90 on separate tickets). Arrives on time: first flight not cancelled × connection made × second flight not cancelled and arriving within 15 minutes. Not yet counted: the second flight also leaving late (which helps), gate-to-gate distance at the hub, and rebooking after a missed connection.

About this data: US DOT on-time records, Aug 2025 – Jul 2026, all US airlines; regional flights count under the airline that sells them. Schedules (which flights and connections exist, and their times) are as of Jun 6 – Jul 31, 2026; seasonal flights outside that window aren’t ranked. Rebuilt monthly. JSON