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: Frontier TPA → ISP (2h 50m), on time 78% of the time. Southwest via BWI (4h 30m) is more reliable, 88%, but takes 1h 40m longer.

Nonstops (seasonal or thin)


Frontier	TPA	ISP	2h 50m	80%	3.0%	263	Flying now
Southwest	TPA	ISP	2h 40m	69%	2.0%	98	Not flying now
JetBlue	TPA	ISP	2h 34m	68%	2.5%	81	Not flying now

Best connections, any airlines

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 →	TPA 07:20 → BWI 09:45WN 2701	55m Baltimore	BWI 10:40 → ISP 11:50WN 4691	4h 30m	96%	88%
Southwest Details →	TPA 09:05 → BWI 11:25WN 4009	1h 55m Baltimore	BWI 13:20 → ISP 14:30WN 966	5h 25m	100%	77%
JetBlue Details →	TPA 07:36 → FLL 08:41B6 1906	2h 57m Fort Lauderdale	FLL 11:38 → ISP 14:28B6 514	6h 52m	98%	71%
Southwest Details →	TPA 10:40 → BWI 13:00WN 1016	3h 05m Baltimore	BWI 16:05 → ISP 17:15WN 4126	6h 35m	97%	61%
Tight connection: often missed
Southwest Details →	TPA 18:45 → BWI 21:15WN 928	1h 10m Baltimore	BWI 22:25 → ISP 23:35WN 4321	4h 55m	47%	25%

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.

The table above includes two-ticket connections (marked “two tickets”), held to the 90-minute minimum. One ticket only →

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