Home / Routes / KSEA → KIAH3,131 scheduled

The route from Seattle Tacoma International Airport (KSEA) in Seattle to George Bush Intercontinental Houston Airport (KIAH) in Houston. SkyMeter tracks roughly 3,131 scheduled flights on this route across 10 carriers. The most active operator is UAL (UAL). Average block time is 3h 30m. Departures average 28 minutes off schedule, with 51% running more than 15 minutes late. The most common aircraft on this route is the BOEING Boeing 737 MAX 9.

Scheduled
3,131
last 543 days
ADS-B observed
483
Airlines
10
Avg dep delay
28m
Late >15 min
51.4%
Cancel rate
0.51%

Recent observed flights

From ADS-B trace data

2026-10-26 13:54  →  2026-10-26 18:06  ·  4h 11m
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2026-10-25 21:14  →  2026-10-26 01:31  ·  4h 17m
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2026-10-25 17:52  →  2026-10-25 22:29  ·  4h 37m
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2026-10-25 14:07  →  2026-10-25 18:20  ·  4h 12m
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2026-10-25 06:57  →  2026-10-25 11:02  ·  4h 4m
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2026-10-25 00:48  →  2026-10-25 04:56  ·  4h 7m
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2026-10-25 00:00  →  2026-10-25 04:05  ·  4h 5m
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2026-10-24 18:51  →  2026-10-24 23:10  ·  4h 19m
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2026-10-24 17:50  →  2026-10-24 22:04  ·  4h 14m
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2026-10-24 14:15  →  2026-10-24 18:39  ·  4h 24m
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Codeshare partnerships

Marketing carriers selling tickets on this route under their own flight numbers

sells ASA 840
sells ASA 737
sells ASA 522
sells ASA 432
sells ASA 322
sells UAL 293
sells UAL 244
sells ASA 69
sells UAL 67
sells ANA 1

Looking for the return flight?

View KIAH → KSEA