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

Portland → Boston via Atlanta: arrives on time 77%

  1. 11:40 PDX → 19:26 ATL
    DL 539 · Delta · 4h 46m · 86% on time, 1.0% cancelled
  2. 3h 24m layover in Atlanta (ATL) · 45 min minimum on one ticket
  3. 22:50 ATL → 01:31 BOS +1 day
    DL 865 · Delta · 2h 41m · 80% on time, 2.8% cancelled

Total trip 10h 51m, 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 connection99%The first flight arrived more than 159 minutes late on 1% of the days it flew: too late for the 45-minute minimum connection on a 3h 24m layover.
Arrives on time77%First flight not cancelled (1.0% are) × connection made (99%) × second flight not cancelled (2.8% are) and within 15 minutes (80%).
Total trip10h 51mPDX 11:40 to BOS 01:31, 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.