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 3% of the time at 7 am and 1 time in 4 at 8 pm.

Nonstops (seasonal or thin)


JetBlue	BDL	SJU	3h 53m	62%	1.9%	727	Flying now
Frontier	BDL	SJU	4h 04m	59%	2.1%	239	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 →	BDL 05:11 → MIA 08:22AA 412	2h 55m Miami	MIA 11:17 → SJU 14:12AA 2584	9h 01m	100%	91%
United Details →	BDL 08:20 → IAH 11:10UA 1361	3h 53m Houston	IAH 15:03 → SJU 20:38UA 701	12h 18m	99%	90%
American Details →	BDL 06:01 → CLT 08:08AA 3182	2h 55m Charlotte	CLT 11:03 → SJU 14:50AA 783	8h 49m	98%	82%
Delta Details →	BDL 08:05 → ATL 10:29DL 2233	2h 37m Atlanta	ATL 13:06 → SJU 16:46DL 1946	8h 41m	99%	80%
United Details →	BDL 06:00 → IAD 07:26UA 635	1h 08m Dulles	IAD 08:34 → SJU 12:34UA 2021	6h 34m	97%	80%
American Details →	BDL 06:20 → PHL 07:40AA 6111 · flown by Piedmont	1h 48m Philadelphia	PHL 09:28 → SJU 13:33AA 903	7h 13m	100%	79%
United Details →	BDL 08:47 → ORD 10:40UA 4664 · flown by SkyWest	3h 58m Chicago	ORD 14:38 → SJU 20:34UA 695	11h 47m	100%	77%
Delta Details →	BDL 06:00 → ATL 08:29DL 2933	1h 16m Atlanta	ATL 09:45 → SJU 13:31DL 1882	7h 31m	96%	73%
Tight connection: often missed
JetBlue Details →	BDL 17:11 → TPA 20:12B6 533	58m Tampa	TPA 21:10 → SJU 00:14 +1B6 751	7h 03m	74%	46%
JetBlue Details →	BDL 07:00 → FLL 10:11B6 959	54m Fort Lauderdale	FLL 11:05 → SJU 13:40B6 1553	6h 42m	74%	43%
United Details →	BDL 15:02 → IAD 16:35UA 1764	49m Dulles	IAD 17:24 → SJU 21:24UA 2025	6h 22m	58%	41%

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

IAD · 1h 08m · leaves 06:00 3%

ATL · 1h 16m · leaves 06:00 4%

BWI · 1h 00m · leaves 05:50 4%

Afternoon and evening

TPA · 58m · leaves 17:11 26%

IAD · 49m · leaves 15:02 42%

MCO · 1h 00m · leaves 17:10 53%

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 737 BDL 07:15 → MCO Southwest WN 1465 MCO 12:10 → SJU Connection details →	2h 01m	7h 50m	93%	80%
Southwest WN 335 BDL 05:20 → TPA JetBlue B6 1751 TPA 11:05 → SJU Connection details →	2h 45m	8h 44m	100%	72%
JetBlue B6 137 BDL 16:40 → MCO Frontier F9 4726 MCO 23:17 → SJU Connection details →	3h 31m	9h 31m	96%	71%

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