2,826 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 92% depart on time. After 4 pm it’s 4 in 5.

Best time to leave 11 am–12 pm 94% arrive on time from ATL

Best single flight DL 2158 ATL 09:57 → GSP 10:57 · 94% on time Avoid DL 3136 ATL 21:14 → GSP 22:18 · 75% on time

Time of day × airport

Share of this route’s flights leaving within 15 minutes, by airport and scheduled departure hour, over Aug 2025 – Jul 2026. Blank: no flights then (or fewer than 40 in the year).

ATL

% of this route’s flights leaving within 15 min (small number: flights in the Jun 6 – Jul 31, 2026 schedule): 85+75–8465–7455–64under 55

Pick an hour to see this route’s flights leaving then.

Airlines on this route

Arriving within 15 minutes. Regional flights count under the airline that sells them. Pick an airline to see its flights.


Delta (incl. Endeavor)	2,826	84%	1.6%	59 min

Flights, best and worst

Flights in the Jun 6 – Jul 31, 2026 schedule that ran 150+ times in the year. Times are local. Pick a flight for its history.


DL 2158	ATL 09:57	GSP 10:57	94%
DL 3089	ATL 08:15	GSP 09:18	91%
DL 1725	ATL 11:15	GSP 12:18	91%
DL 3010	ATL 13:21	GSP 14:15	85%
DL 2281	ATL 22:54	GSP 23:59	81%
· · ·
DL 3095	ATL 15:07	GSP 16:10	80%
DL 1021	ATL 18:00	GSP 19:06	79%
DL 3136	ATL 21:14	GSP 22:18	75%

All 10 flights on this route →

Nonstops by airline and airport

Arriving within 15 minutes, Aug 2025 – Jul 2026. Pick a row to see that airline’s flights on that airport pair.


Delta	ATL	GSP	59m	84%	1.6%	2,826	Flying now

Flying on a particular day? Pick a date above and the same ranking uses our forecast odds for each flight that day: Tomorrow.

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