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1,914 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 93% depart on time. After 4 pm it’s 7 in 10.

Best time to leave 8–9 am 98% arrive on time from STL
Best single flight DL 1626 STL 06:30 → DTW 09:04 · 92% on time Avoid DL 2868 STL 10:20 → DTW 12:55 · 92% 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
93
98
81
77
76
76
82
74
43
57
% 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, SkyWest) 1,298 86% 1.6% 103 min
Southwest 597 73% 0.2% 58 min
Spirit 19 – 0.0% 334 min

Dimmed: fewer than 150 flights in the year, too few to rank.

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 1626 STL 06:30 DTW 09:04 92%
DL 2868 STL 10:20 DTW 12:55 92%

All 8 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 1626 STL 06:30 DTW 09:04 1h 34m 347 92% 2.3% 127 min
WN 4177 STL 09:55 DTW 12:25 1h 30m 33 76% 0.0% 34 min
DL 2868 STL 10:20 DTW 12:55 1h 35m 246 92% 1.2% 128 min
DL 1371 STL 13:54 DTW 16:30 1h 36m 66 77% 3.0% 115 min
WN 225 STL 15:25 DTW 17:55 1h 30m 16 44% 0.0% 53 min
DL 2822 STL 18:10 DTW 20:45 1h 35m 96 76% 3.1% 67 min
WN 4213 STL 19:40 DTW 22:12 1h 32m 16 19% 0.0% 78 min
WN 4822 STL 19:55 DTW 22:30 1h 30m 41 46% 0.0% 76 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 DTW 1h 35m 86% 1.6% 1,298 Flying now
Southwest STL DTW 1h 30m 73% 0.2% 597 Flying now
Spirit STL DTW 1h 30m 84%few flights 0.0% 19 Not 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