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, any airlines

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.


American + Deltatwo ticketsDetails →	STT 11:44 → JFK 15:59AA 801	3h 01m New York	JFK 19:00 → ATL 21:59DL 962	10h 15m	95%	74%
JetBlue + Deltatwo ticketsDetails →	STT 14:49 → SJU 15:30B6 808	2h 26m San Juan	SJU 17:56 → ATL 21:54DL 1946	7h 06m	88%	74%
Southwest + Deltatwo ticketsDetails →	STT 14:35 → MCO 17:40WN 3995	3h 15m Orlando	MCO 20:55 → ATL 22:54DL 2035	8h 19m	98%	68%
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%
United + Frontiertwo ticketsDetails →	STT 13:22 → IAH 17:25UA 2208	2h 37m Houston	IAH 20:02 → ATL 23:24F9 2400	10h 02m	96%	51%

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.

The table above includes two-ticket connections (marked “two tickets”), held to the 90-minute minimum. One ticket only →

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