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3,430 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 73%.

Best time to leave 7–8 am 93% arrive on time from IAH
Best single flight UA 1264 IAH 07:20 → LAS 08:35 · 95% on time Avoid F9 4131 IAH 13:17 → LAS 14:29 · 74% 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).

7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
IAH
93
89
72
92
85
80
82
80
84
67
75
73
67
71
72
% 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 2,595 85% 0.3% 60 min
Spirit 466 82% 2.4% 76 min
Frontier 369 70% 3.0% 119 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 1264 IAH 07:20 LAS 08:35 95%
UA 1524 IAH 11:55 LAS 13:13 88%
UA 1799 IAH 10:55 LAS 12:14 88%
UA 1971 IAH 14:20 LAS 15:37 85%
F9 4131 IAH 13:17 LAS 14:29 74%

All 11 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 1264 IAH 07:20 LAS 08:35 3h 15m 314 95% 0.0% 55 min
UA 1799 IAH 10:55 LAS 12:14 3h 19m 365 88% 0.5% 49 min
UA 1524 IAH 11:55 LAS 13:13 3h 18m 220 88% 0.0% 71 min
F9 4131 IAH 13:17 LAS 14:29 3h 12m 193 74% 2.6% 124 min
UA 1971 IAH 14:20 LAS 15:37 3h 17m 364 85% 0.0% 68 min
UA 1448 IAH 17:05 LAS 18:23 3h 18m 35 62% 2.9% 56 min
F9 1489 IAH 17:22 LAS 18:51 3h 29m 64 82% 3.1% 55 min
UA 2658 IAH 17:33 LAS 18:51 3h 18m 36 78% 0.0% 66 min
UA 2406 IAH 18:39 LAS 19:57 3h 18m 141 79% 0.0% 78 min
UA 1360 IAH 20:05 LAS 21:23 3h 18m 71 66% 0.0% 84 min
F9 1965 IAH 20:43 LAS 21:58 3h 21m 111 55% 3.6% 123 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 LAS 3h 29m 85% 0.3% 2,595 Flying now
Frontier IAH LAS 3h 21m 70% 3.0% 369 Flying now
Spirit IAH LAS 3h 19m 82% 2.4% 466 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