Connection · two tickets · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Portland → Houston via Seattle: arrives on time 88%
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07:20 PDX → 08:34 SEADL 4471 · Delta, flown by SkyWest · 1h 14m · 93% on time, 0.0% cancelled
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3h 21m layover in Seattle (SEA) · 90 min minimum on separate tickets
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11:55 SEA → 18:35 IAHUA 2293 · United · 4h 40m · 90% on time, 0.0% cancelled
Total trip 9h 15m, scheduled departure to arrival (Houston is 2 h ahead of Portland). Times are local. Both flew on 54 of the last 56 days.
Makes the connection98%The first flight arrived more than 111 minutes late on 2% of the days it flew: too late for the 90-minute minimum connection on a 3h 21m layover.
Arrives on time88%First flight not cancelled (0.0% are) × connection made (98%) × second flight not cancelled (0.0% are) and within 15 minutes (90%).
Total trip9h 15mPDX 07:20 to IAH 18:35, layover included
Not yet counted: the second flight also leaving late (which helps), gate-to-gate distance at the hub, and rebooking after a missed connection.