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

Leave before 9 am: 9 in 10 depart on time. After 4 pm it’s 72%.

Best time to leave 6–7 am 93% arrive on time from ATL
Best single flight DL 1571 ATL 07:43 → STL 08:19 · 92% on time Avoid F9 4473 ATL 08:05 → STL 08:57 · 69% 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
21
22
23
ATL
91
92
90
87
86
89
70
83
80
87
66
76
78
63
59
79
90
80
% 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 2,357 85% 2.0% 58 min
Southwest 1,105 80% 0.4% 59 min
Frontier 223 69% 1.8% 53 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 1571 ATL 07:43 STL 08:19 92%
DL 2700 ATL 14:09 STL 14:48 90%
DL 1485 ATL 13:40 STL 14:18 88%
DL 1400 ATL 09:04 STL 09:43 87%
DL 1403 ATL 23:10 STL 23:53 83%
· · ·
DL 1393 ATL 17:13 STL 17:56 79%
DL 2833 ATL 21:33 STL 22:15 76%
F9 4473 ATL 08:05 STL 08:57 69%
All 15 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 STL 1h 42m 85% 2.0% 2,357 Flying now
Southwest ATL STL 1h 45m 80% 0.4% 1,105 Flying now
Frontier ATL STL 1h 50m 69% 1.8% 223 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