Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Portland → Dulles via San Francisco: arrives on time 41%
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19:38 PDX → 21:29 SFOUA 2615 · United · 1h 51m · 55% on time, 0.4% cancelled
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1h 06m layover in San Francisco (SFO) · 45 min minimum on one ticket
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22:35 SFO → 06:58 IAD +1 dayUA 2837 · United · 5h 23m · 67% on time, 0.0% cancelled
Total trip 8h 20m, scheduled departure to arrival (Dulles is 3 h ahead of Portland). Times are local. Both flew on 0 of the last 56 days, too few to list among the best connections.
Makes the connection62%The first flight arrived more than 21 minutes late on 38% of the days it flew: too late for the 45-minute minimum connection on a 1h 06m layover.
Arrives on time41%First flight not cancelled (0.4% are) × connection made (62%) × second flight not cancelled (0.0% are) and within 15 minutes (67%).
Total trip8h 20mPDX 19:38 to IAD 06:58, layover included
Tight connection: often missed. The first flight is late enough to miss it on more than 1 day in 4.
Not yet counted: the second flight also leaving late (which helps), gate-to-gate distance at the hub, and rebooking after a missed connection.