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2,315 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 almost half.

Best time to leave 5–6 am 96% arrive on time from STL
Best single flight AA 2574 STL 08:01 → PHX 09:17 · 85% 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
94
95
87
90
78
70
66
61
68
65
53
54
52
45
41
39
% 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
Phoenix flights leaving STL 9–10 pm: 1Close ×
WN 4360 STL 21:45 PHX 22:55 3h 10m 54 31% 0.0% 55 min

Airlines on this route

Arriving within 15 minutes. Regional flights count under the airline that sells them. Pick an airline to see its flights.
American (incl. Envoy, SkyWest) 643 83% 0.9% 187 min
Southwest 1,619 73% 0.3% 52 min
Frontier 53 – 1.9% 210 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.
AA 2574 STL 08:01 PHX 09:17 85%
All 9 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.
American STL PHX 3h 32m 83% 0.9% 643 Flying now
Southwest STL PHX 3h 25m 73% 0.3% 1,619 Flying now
Frontier STL PHX 3h 33m 83% 1.9% 53 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