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3,685 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 94% depart on time. After 4 pm it’s 7 in 10.

Best time to leave 8–9 am 97% arrive on time from STL
Best single flight DL 1536 STL 07:08 → ATL 09:45 · 97% on time Avoid F9 4474 STL 17:06 → ATL 20:07 · 61% 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
7
8
9
10
11
12
13
14
15
16
17
18
19
20
STL
95
93
97
94
89
82
82
83
77
81
62
79
76
63
65
% 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) 2,358 90% 2.0% 81 min
Southwest 1,105 81% 1.1% 57 min
Frontier 222 62% 1.8% 100 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 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 1485 STL 15:13 ATL 17:52 85%
DL 1393 STL 18:58 ATL 21:44 83%
F9 4474 STL 17:06 ATL 20:07 61%

All 15 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
WN 236 STL 10:00 ATL 12:35 1h 35m 26 92% 0.0% 100 min
WN 257 STL 10:15 ATL 12:50 1h 35m 16 100% 0.0% –
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
WN 3882 STL 16:25 ATL 19:00 1h 35m 50 45% 2.0% 76 min
F9 4474 STL 17:06 ATL 20:07 2h 01m 197 61% 2.0% 94 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
WN 2400 STL 19:10 ATL 21:48 1h 38m 16 50% 0.0% 34 min
WN 3883 STL 20:05 ATL 22:40 1h 35m 33 70% 0.0% 71 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
Southwest STL ATL 1h 35m 81% 1.1% 1,105 Flying now
Frontier STL ATL 2h 01m 62% 1.8% 222 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