Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026

Portland → Boston via Denver: arrives on time 83%

  1. 05:00 PDX → 08:31 DEN
    UA 459 · United · 2h 31m · 97% on time, 0.3% cancelled
  2. 1h 09m layover in Denver (DEN) · 45 min minimum on one ticket
  3. 09:40 DEN → 15:44 BOS
    UA 1232 · United · 4h 04m · 86% on time, 1.0% cancelled

Total trip 7h 44m, scheduled departure to arrival (Boston is 3 h ahead of Portland). Times are local. Both flew on 56 of the last 56 days.

Makes the connection98%The first flight arrived more than 24 minutes late on 2% of the days it flew: too late for the 45-minute minimum connection on a 1h 09m layover.
Arrives on time83%First flight not cancelled (0.3% are) × connection made (98%) × second flight not cancelled (1.0% are) and within 15 minutes (86%).
Total trip7h 44mPDX 05:00 to BOS 15:44, 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.