Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Houston → Portland via San Francisco: arrives on time 88%
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05:22 IAH → 07:22 SFOUA 487 · United · 4h 00m · 97% on time, 0.3% cancelled
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1h 00m layover in San Francisco (SFO) · 45 min minimum on one ticket
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08:22 SFO → 10:20 PDXUA 2265 · United · 1h 58m · 91% on time, 0.0% cancelled
Total trip 6h 58m, scheduled departure to arrival (Portland is 2 h behind Houston). Times are local. Both flew on 56 of the last 56 days.
Makes the connection97%The first flight arrived more than 15 minutes late on 3% of the days it flew: too late for the 45-minute minimum connection on a 1h 00m layover.
Arrives on time88%First flight not cancelled (0.3% are) × connection made (97%) × second flight not cancelled (0.0% are) and within 15 minutes (91%).
Total trip6h 58mIAH 05:22 to PDX 10:20, 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.