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2,358 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 83%.

Best time to leave 6–7 am 95% arrive on time from STL
Best single flight DL 1536 STL 07:08 → ATL 09:45 · 97% on time Avoid DL 1393 STL 18:58 → ATL 21:44 · 83% 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).

6
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9
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STL
95
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86
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79
% 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.

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 1536 STL 07:08 ATL 09:45 97%
DL 1524 STL 06:00 ATL 08:38 96%
DL 1571 STL 09:24 ATL 12:02 94%
DL 1400 STL 10:51 ATL 13:25 88%
DL 2700 STL 15:57 ATL 18:37 87%
· · ·
DL 566 STL 13:22 ATL 16:07 86%
DL 1485 STL 15:13 ATL 17:52 85%
DL 1393 STL 18:58 ATL 21:44 83%

All 9 Delta flights in the current schedule

Every flight that flew in the Jun 6 – Jul 31, 2026 schedule, with its record over Aug 2025 – Jul 2026. Times are local. Click a column to sort.
DL 1524 STL 06:00 ATL 08:38 1h 38m 365 96% 1.6% 91 min
DL 1536 STL 07:08 ATL 09:45 1h 37m 267 97% 1.5% 111 min
DL 1571 STL 09:24 ATL 12:02 1h 38m 311 94% 2.9% 87 min
DL 1400 STL 10:51 ATL 13:25 1h 35m 208 88% 1.9% 111 min
DL 566 STL 13:22 ATL 16:07 1h 41m 192 86% 2.1% 55 min
DL 1485 STL 15:13 ATL 17:52 1h 39m 213 85% 1.4% 74 min
DL 2700 STL 15:57 ATL 18:37 1h 45m 155 87% 1.9% 88 min
DL 543 STL 17:36 ATL 20:23 1h 47m 84 81% 3.6% 46 min
DL 1393 STL 18:58 ATL 21:44 1h 48m 242 83% 4.5% 91 min

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 STL ATL 1h 38m 90% 2.0% 2,358 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