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Showing United only (incl. its regional partners)All airlines ×
3,077 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 87% depart on time. After 4 pm it’s 3 in 4.

Best time to leave 5–6 am 88% arrive on time from STL
Best single flight UA 4423 STL 07:20 → ORD 09:00 · 86% on time Avoid UA 4395 STL 11:25 → ORD 13:03 · 71% 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
STL
86
88
90
85
72
75
75
76
70
76
56
80
74
71
% 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.

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.
UA 4423flown by GoJet STL 07:20 ORD 09:00 86%
UA 4183flown by GoJet STL 08:00 ORD 09:35 72%
UA 4395flown by GoJet STL 11:25 ORD 13:03 71%

All 14 United 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.
UA 2805 STL 06:00 ORD 07:30 1h 30m 37 89% 0.0% 71 min
UA 1008 STL 06:00 ORD 07:30 1h 30m 35 89% 0.0% 97 min
UA 4423flown by GoJet STL 07:20 ORD 09:00 1h 40m 327 86% 0.6% 74 min
UA 4183flown by GoJet STL 08:00 ORD 09:35 1h 35m 214 72% 0.5% 72 min
UA 4567flown by GoJet STL 08:10 ORD 09:45 1h 35m 20 95% 0.0% 20 min
UA 5572flown by SkyWest STL 09:20 ORD 10:52 1h 32m 62 74% 0.0% 71 min
UA 4517flown by GoJet STL 10:20 ORD 11:52 1h 32m 72 90% 1.4% 42 min
UA 4395flown by GoJet STL 11:25 ORD 13:03 1h 38m 323 71% 2.8% 110 min
UA 1382 STL 13:13 ORD 14:43 1h 30m 72 71% 2.8% 94 min
UA 4536flown by GoJet STL 15:22 ORD 17:00 1h 38m 35 68% 11.4% 102 min
UA 4452flown by GoJet STL 15:22 ORD 17:00 1h 38m 37 63% 5.4% 70 min
UA 1639 STL 17:59 ORD 19:30 1h 31m 72 66% 5.6% 129 min
UA 4411flown by GoJet STL 19:05 ORD 20:35 1h 30m 32 62% 9.4% 73 min
UA 4165flown by GoJet STL 19:05 ORD 20:39 1h 34m 35 70% 5.7% 90 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.
United STL ORD 1h 30m 72% 2.8% 3,077 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