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

No clear winner: Delta’s STT → ATL flights land within a few points of 83% on time whatever the hour.

Nonstops (seasonal or thin)


Delta	STT	ATL	4h 00m	83%	2.2%	719	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


United Details →	STT 16:45 → IAD 20:58UA 1445	1h 30m Dulles	IAD 22:28 → ATL 00:30 +1UA 1635	7h 45m	92%	66%
American Details →	STT 16:50 → MIA 19:54AA 2738	2h 02m Miami	MIA 21:56 → ATL 23:59AA 659	7h 09m	97%	61%
American Details →	STT 16:46 → CLT 20:57AA 1965	1h 39m Charlotte	CLT 22:36 → ATL 23:58AA 5498 · flown by PSA	7h 12m	89%	60%
American Details →	STT 13:49 → MIA 16:50AA 2744	3h 14m Miami	MIA 20:04 → ATL 22:09AA 1045	8h 20m	99%	56%
American Details →	STT 14:28 → DFW 19:14AA 2743	1h 56m Dallas-Fort Worth	DFW 21:10 → ATL 00:19 +1AA 2749	9h 51m	94%	48%
American Details →	STT 11:43 → CLT 15:49AA 2431	57m Charlotte	CLT 16:46 → ATL 18:14AA 5040 · flown by PSA	6h 31m	93%	41%
Southwest Details →	STT 14:35 → MCO 17:40WN 3995	1h 30m Orlando	MCO 19:10 → ATL 20:55WN 2529	6h 17m	88%	39%

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.

Afternoon and evening

CLT · 52m · leaves 11:52 23%

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.


American AA 801 STT 11:44 → JFK Delta DL 962 JFK 19:00 → ATL Connection details →	3h 01m	10h 15m	95%	74%
JetBlue B6 808 STT 14:49 → SJU Delta DL 1946 SJU 17:56 → ATL Connection details →	2h 26m	7h 06m	88%	74%
Southwest WN 3995 STT 14:35 → MCO Delta DL 2035 MCO 20:55 → ATL Connection details →	3h 15m	8h 19m	98%	68%

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