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

Portland → Detroit via Atlanta: arrives on time 67%

  1. 22:55 PDX → 06:27 ATL
    DL 564 · Delta · 4h 43m · 76% on time, 1.8% cancelled
  2. 58m layover in Atlanta (ATL) · 45 min minimum on one ticket
  3. 07:25 ATL → 09:20 DTW +1 day
    DL 1646 · Delta · 1h 55m · 92% on time, 0.8% cancelled

Total trip 7h 25m, scheduled departure to arrival (Detroit is 3 h ahead of Portland). Times are local. Both flew on 54 of the last 56 days.

Makes the connection74%The first flight arrived more than 13 minutes late on 26% of the days it flew: too late for the 45-minute minimum connection on a 58m layover.
Arrives on time67%First flight not cancelled (1.8% are) × connection made (74%) × second flight not cancelled (0.8% are) and within 15 minutes (92%).
Total trip7h 25mPDX 22:55 to DTW 09:20, 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.