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

Portland → Washington via Boston: arrives on time 89%

  1. 21:56 PDX → 06:20 BOS
    AS 436 · Alaska · 5h 24m · 80% on time, 0.5% cancelled
  2. 2h 58m layover in Boston (BOS) · 90 min minimum on separate tickets
  3. 09:18 BOS → 10:59 DCA +1 day
    AA 1605 · American · 1h 41m · 90% on time, 0.0% cancelled

Total trip 10h 03m, scheduled departure to arrival (Washington is 3 h ahead of Portland). Times are local. Both flew on 46 of the last 56 days.

Makes the connection99%The first flight arrived more than 88 minutes late on 1% of the days it flew: too late for the 90-minute minimum connection on a 2h 58m layover.
Arrives on time89%First flight not cancelled (0.5% are) × connection made (99%) × second flight not cancelled (0.0% are) and within 15 minutes (90%).
Total trip10h 03mPDX 21:56 to DCA 10:59, 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.