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

Portland → Atlanta via San Francisco: arrives on time 56%

  1. 18:03 PDX → 19:53 SFO
    UA 1656 · United · 1h 50m · 33% on time, 0.0% cancelled
  2. 1h 27m layover in San Francisco (SFO) · 45 min minimum on one ticket
  3. 21:20 SFO → 05:20 ATL +1 day
    UA 1603 · United · 5h 00m · 85% on time, 0.7% cancelled

Total trip 8h 17m, scheduled departure to arrival (Atlanta is 3 h ahead of Portland). Times are local. Both flew on 24 of the last 56 days.

Makes the connection67%The first flight arrived more than 42 minutes late on 33% of the days it flew: too late for the 45-minute minimum connection on a 1h 27m layover.
Arrives on time56%First flight not cancelled (0.0% are) × connection made (67%) × second flight not cancelled (0.7% are) and within 15 minutes (85%).
Total trip8h 17mPDX 18:03 to ATL 05:20, 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.