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

Portland → Boston via Chicago: arrives on time 58%

  1. 23:07 PDX → 05:07 ORD
    AA 2977 · American · 3h 59m · 63% on time, 0.0% cancelled
  2. 53m layover in Chicago (ORD) · 45 min minimum on one ticket
  3. 06:00 ORD → 09:34 BOS +1 day
    AA 3022 · American · 2h 34m · 97% on time, 0.0% cancelled

Total trip 7h 27m, scheduled departure to arrival (Boston is 3 h ahead of Portland). Times are local. Both flew on 55 of the last 56 days.

Makes the connection60%The first flight arrived more than 8 minutes late on 40% of the days it flew: too late for the 45-minute minimum connection on a 53m layover.
Arrives on time58%First flight not cancelled (0.0% are) × connection made (60%) × second flight not cancelled (0.0% are) and within 15 minutes (97%).
Total trip7h 27mPDX 23:07 to BOS 09:34, 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.