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

No clear winner: airlines and hours on this route all land within a few points of 3 in 4 on time.

Nonstops (seasonal or thin)


JetBlue	BOS	STT	4h 05m	76%	4.2%	191	Flying now
Delta	BOS	STT	4h 05m	72%	4.7%	127	Not flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


American Details →	BOS 05:10 → MIA 08:38AA 1418	1h 29m Miami	MIA 10:07 → STT 12:59AA 2744	7h 49m	99%	87%
Delta Details →	BOS 05:30 → ATL 08:15DL 2242	2h 18m Atlanta	ATL 10:33 → STT 14:19DL 1902	8h 49m	100%	84%
American Details →	BOS 06:00 → MIA 09:30AA 873	3h 38m Miami	MIA 13:08 → STT 16:00AA 2738	10h 00m	98%	81%
United Details →	BOS 05:45 → IAD 07:23UA 1734	52m Dulles	IAD 08:15 → STT 12:20UA 1443	6h 35m	94%	79%
United Details →	BOS 05:47 → IAH 08:50UA 1409	1h 02m Houston	IAH 09:52 → STT 15:43UA 1908	9h 56m	93%	77%
American Details →	BOS 06:05 → CLT 08:30AA 418	1h 27m Charlotte	CLT 09:57 → STT 13:48AA 2432	7h 43m	98%	76%
Delta Details →	BOS 06:50 → ATL 09:33DL 695	2h 02m Atlanta	ATL 11:35 → STT 15:21DL 1883	8h 31m	96%	69%
Delta Details →	BOS 08:05 → ATL 10:49DL 923	46m Atlanta	ATL 11:35 → STT 15:20DL 1889	7h 15m	79%	54%
Tight connection: often missed
JetBlue Details →	BOS 09:40 → SJU 13:42B6 861	53m San Juan	SJU 14:35 → STT 15:12B6 936	5h 32m	71%	49%

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 · 52m · leaves 05:45 6%

IAH · 1h 02m · leaves 05:47 7%

ATL · 1h 00m · leaves 06:50 13%

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.


Delta DL 1399 BOS 07:05 → MIA American AA 2738 MIA 13:08 → STT Connection details →	2h 29m	8h 55m	95%	77%
JetBlue B6 917 BOS 05:15 → JFK Delta DL 1930 JFK 08:00 → STT Connection details →	1h 32m	6h 55m	89%	68%
Frontier F9 3085 BOS 06:00 → ATL Delta DL 1883 ATL 11:35 → STT Connection details →	2h 29m	9h 21m	94%	66%

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