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

Portland → Houston via Chicago: arrives on time 51%

  1. 14:25 PDX → 20:38 ORD
    UA 2336 · United · 4h 13m · 68% on time, 0.0% cancelled
  2. 1h 02m layover in Chicago (ORD) · 45 min minimum on one ticket
  3. 21:40 ORD → 00:34 IAH +1 day
    UA 2665 · United · 2h 54m · 76% on time, 2.3% cancelled

Total trip 8h 09m, scheduled departure to arrival (Houston is 2 h ahead of Portland). Times are local. Both flew on 46 of the last 56 days.

Makes the connection69%The first flight arrived more than 17 minutes late on 31% of the days it flew: too late for the 45-minute minimum connection on a 1h 02m layover.
Arrives on time51%First flight not cancelled (0.0% are) × connection made (69%) × second flight not cancelled (2.3% are) and within 15 minutes (76%).
Total trip8h 09mPDX 14:25 to IAH 00:34, 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.