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2,090 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 6–7 am 93% arrive on time from SEA
Best single flight UA 2135 SEA 07:05 → IAH 13:31 · 92% on time Avoid AS 438 SEA 10:52 → IAH 17:16 · 70% 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
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9
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13
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SEA
91
92
94
86
81
75
82
81
84
78
75
% 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 1,238 87% 0.3% 82 min
Alaska 852 77% 0.6% 47 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 2135 SEA 07:05 IAH 13:31 92%
UA 2379 SEA 23:49 IAH 06:10 84%
AS 398 SEA 23:57 IAH 06:20 82%
AS 438 SEA 10:52 IAH 17:16 70%

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.
UA 2748 SEA 05:00 IAH 11:21 4h 21m 61 89% 0.0% 128 min
UA 2135 SEA 07:05 IAH 13:31 4h 26m 361 92% 0.6% 92 min
AS 438 SEA 10:52 IAH 17:16 4h 24m 363 70% 0.6% 44 min
UA 2293 SEA 11:55 IAH 18:35 4h 40m 71 90% 0.0% 43 min
UA 1660 SEA 17:00 IAH 23:26 4h 26m 61 84% 0.0% 171 min
AS 1573 SEA 17:33 IAH 23:59 4h 26m 19 63% 0.0% 64 min
AS 1579 SEA 17:33 IAH 23:59 4h 26m 33 88% 0.0% 44 min
UA 2379 SEA 23:49 IAH 06:10 4h 21m 229 84% 0.4% 71 min
AS 398 SEA 23:57 IAH 06:20 4h 23m 358 82% 0.8% 53 min
AS 465 SEA 23:59 IAH 06:23 4h 24m 20 100% 0.0% –

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 SEA IAH 4h 26m 87% 0.3% 1,238 Flying now
Alaska SEA IAH 4h 25m 77% 0.6% 852 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