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2,094 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 58%.

Best time to leave 5–6 am 96% arrive on time from STL
Best single flight F9 2017 STL 19:10 → LAS 20:43 · 76% 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).

5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
STL
97
94
93
82
82
78
76
65
62
54
71
58
47
60
60
59
% 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.
Frontier 309 77% 2.6% 141 min
Southwest 1,785 77% 0.3% 54 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.
F9 2017 STL 19:10 LAS 20:43 76%

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.
WN 3934 STL 06:00 LAS 07:25 3h 25m 49 88% 0.0% 52 min
WN 1635 STL 08:00 LAS 09:25 3h 25m 16 88% 0.0% 28 min
WN 2327 STL 09:15 LAS 10:40 3h 25m 26 77% 0.0% 79 min
WN 4359 STL 14:20 LAS 15:45 3h 25m 49 59% 0.0% 45 min
F9 3107 STL 14:56 LAS 16:31 3h 35m 132 79% 4.5% 131 min
F9 2017 STL 19:10 LAS 20:43 3h 33m 177 76% 1.1% 146 min
WN 3935 STL 19:40 LAS 21:05 3h 25m 50 14% 2.0% 56 min
WN 3936 STL 21:50 LAS 23:18 3h 28m 50 60% 0.0% 63 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.
Frontier STL LAS 3h 35m 77% 2.6% 309 Flying now
Southwest STL LAS 3h 35m 77% 0.3% 1,785 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