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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 7–8 am: 1Close ×
WN 4673 STL 07:20 PHX 08:35 3h 15m 12 100% 0.0% –

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