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3,139 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 96% depart on time. After 4 pm it’s 7 in 10.

Best time to leave 5–6 am 98% arrive on time from OKC
Best single flight UA 4751 OKC 06:05 → DEN 06:58 · 94% on time Avoid UA 4768 OKC 16:56 → DEN 18:20 · 72% 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
OKC
98
95
94
99
90
82
86
87
70
74
82
76
73
64
61
78
74
% 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
Denver flights leaving OKC 10–11 am: 1Close ×
WN 2274 OKC 10:30 DEN 11:05 1h 35m 16 88% 0.0% 26 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.
United (incl. SkyWest) 1,565 82% 0.8% 67 min
Southwest 1,224 79% 0.8% 51 min
Frontier 350 78% 0.6% 79 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.
UA 4751flown by SkyWest OKC 06:05 DEN 06:58 94%
UA 5490flown by SkyWest OKC 11:30 DEN 12:28 86%
F9 1927 OKC 19:16 DEN 20:07 80%
UA 4768flown by SkyWest OKC 16:56 DEN 18:20 72%
All 17 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.
United OKC DEN 1h 56m 82% 0.8% 1,565 Flying now
Southwest OKC DEN 1h 40m 79% 0.8% 1,224 Flying now
Frontier OKC DEN 1h 54m 78% 0.6% 350 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