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

No clear winner: Southwest’s ISP → BWI flights land within a few points of 86% on time whatever the hour.

Nonstops


Southwest	ISP	BWI	1h 20m	86%	1.5%	1,235	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Southwest Details →	ISP 05:20 → MCO 07:55WN 4646	3h 00m Orlando	MCO 10:55 → BWI 13:10WN 193	7h 50m	98%	81%
Southwest Details →	ISP 18:05 → MCO 20:55WN 104	2h 00m Orlando	MCO 22:55 → BWI 01:15 +1WN 160	7h 10m	91%	72%
JetBlue Details →	ISP 13:48 → FLL 16:50B6 513	2h 05m Fort Lauderdale	FLL 18:55 → BWI 21:23B6 2594	7h 35m	91%	27%

Same layover, different day-part

How often the first flight arrives too late to connect (45 min minimum), for one-ticket layovers of 45–80 minutes.

Morning

MCO · 1h 20m · leaves 05:20 4%

Delays build through the day, so an afternoon first leg eats the layover. A short connection is fine early in the morning and a gamble later on.

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 547 ISP 11:31 → MCO Frontier F9 4004 MCO 18:04 → BWI Connection details →	3h 39m	9h 03m	96%	53%
Frontier F9 3941 ISP 10:57 → MCO Southwest WN 889 MCO 17:18 → BWI Connection details →	3h 28m	8h 56m	96%	49%
JetBlue B6 545 ISP 14:40 → PBI Southwest WN 3191 PBI 19:05 → BWI Connection details →	1h 32m	6h 55m	58%	35%

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