tailodds FORECAST
Connection · two tickets · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026

Portland → Dulles via Los Angeles: arrives on time 88%

  1. 06:30 PDX → 09:00 LAX
    DL 2947 · Delta · 2h 30m · 94% on time, 0.0% cancelled
  2. 3h 43m layover in Los Angeles (LAX) · 90 min minimum on separate tickets
  3. 12:43 LAX → 20:48 IAD
    UA 1635 · United · 5h 05m · 89% on time, 0.6% cancelled

Total trip 11h 18m, scheduled departure to arrival (Dulles 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 133 minutes late on 1% of the days it flew: too late for the 90-minute minimum connection on a 3h 43m layover.
Arrives on time88%First flight not cancelled (0.0% are) × connection made (99%) × second flight not cancelled (0.6% are) and within 15 minutes (89%).
Total trip11h 18mPDX 06:30 to IAD 20:48, 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.