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

Connect in the morning. The same one-hour layover misses 7% of the time at 8 am and 1 time in 5 at 4 pm.

Nonstops


Southwest	BWI	SJU	4h 05m	69%	0.9%	817	Flying now
Frontier	BWI	SJU	4h 00m	56%	6.4%	171	Flying now
Spirit	BWI	SJU	3h 46m	76%	5.7%	174	Not flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


American Details →	BWI 06:00 → MIA 08:46AA 1183	2h 31m Miami	MIA 11:17 → SJU 14:12AA 2584	8h 12m	97%	88%
Southwest Details →	BWI 08:05 → MCO 10:20WN 986	1h 50m Orlando	MCO 12:10 → SJU 15:05WN 1465	7h 00m	100%	88%
American Details →	BWI 06:15 → CLT 07:53AA 2670	3h 10m Charlotte	CLT 11:03 → SJU 14:50AA 783	8h 35m	98%	82%
Southwest Details →	BWI 09:30 → MCO 11:50WN 3658	3h 35m Orlando	MCO 15:25 → SJU 18:25WN 2703	8h 55m	100%	82%
United Details →	BWI 10:32 → ORD 11:48UA 704	2h 50m Chicago	ORD 14:38 → SJU 20:34UA 695	10h 02m	100%	79%
Delta Details →	BWI 08:17 → ATL 10:15DL 2562	2h 51m Atlanta	ATL 13:06 → SJU 16:46DL 1946	8h 29m	99%	79%
United Details →	BWI 06:15 → ORD 07:30UA 709	1h 19m Chicago	ORD 08:49 → SJU 14:44UA 1996	8h 29m	97%	78%
United Details →	BWI 06:00 → IAH 08:16UA 1898	1h 47m Houston	IAH 10:03 → SJU 15:42UA 1192	9h 42m	99%	76%
Tight connection: often missed
American Details →	BWI 19:17 → DFW 21:42AA 1626	1h 05m Dallas-Fort Worth	DFW 22:47 → SJU 04:39 +1AA 514	9h 22m	53%	25%
Southwest Details →	BWI 17:40 → MCO 20:15WN 172	50m Orlando	MCO 21:05 → SJU 00:10 +1WN 2707	6h 25m	38%	20%
Southwest Details →	BWI 18:40 → MCO 21:10WN 3777	1h 15m Orlando	MCO 22:25 → SJU 01:20 +1WN 2708	6h 43m	66%	13%

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

DTW · 55m · leaves 06:08 7%

BOS · 50m · leaves 06:17 7%

ATL · 49m · leaves 07:00 19%

Afternoon and evening

ATL · 51m · leaves 14:10 20%

DFW · 1h 05m · leaves 19:17 47%

MCO · 50m · leaves 17:40 62%

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.


Southwest WN 984 BWI 06:35 → MCO JetBlue B6 133 MCO 11:02 → SJU Connection details →	2h 07m	7h 29m	95%	81%
Southwest WN 3931 BWI 08:20 → ATL Delta DL 1946 ATL 13:06 → SJU Connection details →	2h 46m	8h 26m	98%	80%
Southwest WN 986 BWI 08:05 → MCO Frontier F9 1824 MCO 13:57 → SJU Connection details →	3h 37m	8h 55m	100%	78%

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