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

Portland → Dulles via Atlanta: arrives on time 73%

  1. 06:35 PDX → 14:20 ATL
    DL 662 · Delta · 4h 45m · 95% on time, 1.1% cancelled
  2. 4h 55m layover in Atlanta (ATL) · 45 min minimum on one ticket
  3. 19:15 ATL → 21:03 IAD
    DL 1309 · Delta · 1h 49m · 76% on time, 2.5% cancelled

Total trip 11h 29m, scheduled departure to arrival (Dulles is 3 h ahead of Portland). Times are local. Both flew on 45 of the last 56 days.

Makes the connection99%The first flight arrived more than 250 minutes late on 1% of the days it flew: too late for the 45-minute minimum connection on a 4h 55m layover.
Arrives on time73%First flight not cancelled (1.1% are) × connection made (99%) × second flight not cancelled (2.5% are) and within 15 minutes (76%).
Total trip11h 29mPDX 06:35 to IAD 21:03, 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.