Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Portland → Boston via Chicago: arrives on time 45%
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14:25 PDX → 20:38 ORDUA 2336 · United · 4h 13m · 68% on time, 0.0% cancelled
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1h 03m layover in Chicago (ORD) · 45 min minimum on one ticket
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21:41 ORD → 01:14 BOS +1 dayUA 1779 · United · 2h 33m · 68% on time, 3.7% cancelled
Total trip 7h 49m, scheduled departure to arrival (Boston is 3 h ahead of Portland). Times are local. Both flew on 52 of the last 56 days.
Makes the connection69%The first flight arrived more than 18 minutes late on 31% of the days it flew: too late for the 45-minute minimum connection on a 1h 03m layover.
Arrives on time45%First flight not cancelled (0.0% are) × connection made (69%) × second flight not cancelled (3.7% are) and within 15 minutes (68%).
Total trip7h 49mPDX 14:25 to BOS 01:14, 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.