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

Dulles → Portland via Chicago: arrives on time 38%

  1. 15:39 IAD → 17:02 ORD
    UA 1393 · United · 2h 23m · 64% on time, 2.7% cancelled
  2. 1h 06m layover in Chicago (ORD) · 45 min minimum on one ticket
  3. 18:08 ORD → 21:41 PWM
    UA 1401 · United · 2h 33m · 59% on time, 1.4% cancelled

Total trip 6h 02m, scheduled departure to arrival. Times are local. Both flew on 37 of the last 56 days.

Makes the connection68%The first flight arrived more than 21 minutes late on 32% of the days it flew: too late for the 45-minute minimum connection on a 1h 06m layover.
Arrives on time38%First flight not cancelled (2.7% are) × connection made (68%) × second flight not cancelled (1.4% are) and within 15 minutes (59%).
Total trip6h 02mIAD 15:39 to PWM 21:41, 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.