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2,090 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 73%.

Best time to leave 6–7 am 94% arrive on time from IAH
Best single flight AS 453 IAH 06:02 → SEA 08:40 · 88% on time Avoid AS 439 IAH 14:38 → SEA 17:21 · 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).

6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
IAH
96
84
93
88
84
87
78
69
65
87
% 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.
Alaska 852 81% 0.6% 52 min
United 1,238 79% 0.2% 55 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.
AS 453 IAH 06:02 SEA 08:40 88%
UA 2456 IAH 19:55 SEA 22:42 73%
AS 439 IAH 14:38 SEA 17:21 72%

All 10 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.
AS 453 IAH 06:02 SEA 08:40 4h 38m 344 88% 0.9% 37 min
AS 241 IAH 08:00 SEA 10:41 4h 41m 80 85% 0.0% 91 min
UA 1351 IAH 08:00 SEA 10:47 4h 47m 35 86% 0.0% 57 min
UA 2654 IAH 08:00 SEA 10:47 4h 47m 36 97% 0.0% 28 min
UA 2205 IAH 10:00 SEA 12:47 4h 47m 125 77% 0.0% 69 min
AS 439 IAH 14:38 SEA 17:21 4h 43m 361 72% 0.3% 55 min
UA 2638 IAH 16:25 SEA 19:12 4h 47m 92 67% 0.0% 54 min
UA 1795 IAH 18:05 SEA 20:53 4h 48m 29 76% 0.0% 86 min
UA 692 IAH 18:30 SEA 21:18 4h 48m 32 72% 0.0% 61 min
UA 2456 IAH 19:55 SEA 22:42 4h 47m 303 73% 0.7% 50 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.
Alaska IAH SEA 4h 43m 81% 0.6% 852 Flying now
United IAH SEA 4h 48m 79% 0.2% 1,238 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