2,827 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 95% depart on time. After 4 pm it’s 4 in 5.

Best time to leave 5–6 am 97% arrive on time from GSP

Best single flight DL 3028 GSP 05:44 → ATL 06:45 · 98% on time Avoid DL 3095 GSP 17:16 → ATL 18:25 · 84% 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).

GSP

% 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)	2,827	90%	1.6%	87 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 3028	GSP 05:44	ATL 06:45	98%
DL 3089	GSP 10:03	ATL 11:05	93%
DL 1146	GSP 06:45	ATL 07:49	93%
DL 1619	GSP 08:52	ATL 09:57	92%
DL 2158	GSP 11:42	ATL 12:45	92%
· · ·
DL 1725	GSP 13:09	ATL 14:15	88%
DL 1273	GSP 15:21	ATL 16:26	86%
DL 3095	GSP 17:16	ATL 18:25	84%

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	GSP	ATL	1h 05m	90%	1.6%	2,827	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