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4,715 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 3 in 4.

Best time to leave 5–6 am 97% arrive on time from IAH
Best single flight UA 1066 IAH 22:10 → DEN 23:57 · 90% on time Avoid F9 3227 IAH 18:14 → DEN 19:58 · 65% 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
IAH
96
92
92
93
84
88
83
87
76
75
73
66
76
80
81
% 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.
United 3,899 83% 0.3% 68 min
Frontier 816 80% 1.0% 76 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 1066 IAH 22:10 DEN 23:57 90%
F9 3229 IAH 06:30 DEN 08:06 88%
UA 1409 IAH 10:31 DEN 12:07 83%
UA 2339 IAH 20:22 DEN 22:15 76%
UA 1654 IAH 18:19 DEN 20:14 66%
· · ·
F9 3227 IAH 18:14 DEN 19:58 65%

All 20 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 1874 IAH 05:15 DEN 06:47 2h 32m 90 96% 0.0% 117 min
UA 2643 IAH 06:30 DEN 08:02 2h 32m 125 96% 0.8% 53 min
F9 3229 IAH 06:30 DEN 08:06 2h 36m 356 88% 0.6% 108 min
UA 1575 IAH 07:20 DEN 08:52 2h 32m 72 77% 1.4% 50 min
UA 2816 IAH 08:30 DEN 10:05 2h 35m 37 97% 0.0% 32 min
UA 2802 IAH 08:30 DEN 10:05 2h 35m 35 86% 0.0% 24 min
UA 1450 IAH 09:32 DEN 11:08 2h 36m 101 85% 0.0% 65 min
UA 1634 IAH 09:36 DEN 11:12 2h 36m 24 67% 0.0% 117 min
UA 1409 IAH 10:31 DEN 12:07 2h 36m 167 83% 0.6% 79 min
UA 2168 IAH 12:33 DEN 14:17 2h 44m 149 86% 0.0% 66 min
UA 1246 IAH 15:00 DEN 16:44 2h 44m 133 77% 0.8% 92 min
UA 2767 IAH 15:00 DEN 16:43 2h 43m 37 75% 0.0% 56 min
UA 484 IAH 16:21 DEN 18:23 3h 02m 37 80% 0.0% 109 min
UA 470 IAH 16:21 DEN 18:23 3h 02m 112 65% 0.0% 79 min
F9 3227 IAH 18:14 DEN 19:58 2h 49m 184 65% 2.2% 69 min
UA 1654 IAH 18:19 DEN 20:14 2h 55m 365 66% 0.5% 65 min
UA 2339 IAH 20:22 DEN 22:15 2h 53m 170 76% 0.0% 76 min
F9 3205 IAH 22:08 DEN 23:58 2h 50m 72 80% 1.4% 50 min
UA 1066 IAH 22:10 DEN 23:57 2h 47m 189 90% 0.5% 66 min
F9 4855 IAH 22:25 DEN 00:18 2h 53m 68 85% 0.0% 60 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 IAH DEN 2h 40m 83% 0.3% 3,899 Flying now
Frontier IAH DEN 2h 49m 80% 1.0% 816 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