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

Seattle → Dulles via Tampa: arrives on time 92%

  1. 21:18 SEA → 05:48 TPA
    AS 639 · Alaska · 5h 30m · 84% on time, 0.0% cancelled
  2. 3h 12m layover in Tampa (TPA) · 90 min minimum on separate tickets
  3. 09:00 TPA → 11:22 IAD +1 day
    UA 2331 · United · 2h 22m · 94% on time, 1.3% cancelled

Total trip 11h 04m, scheduled departure to arrival (Dulles is 3 h ahead of Seattle). Times are local. Both flew on 48 of the last 56 days.

Makes the connection99%The first flight arrived more than 102 minutes late on 1% of the days it flew: too late for the 90-minute minimum connection on a 3h 12m layover.
Arrives on time92%First flight not cancelled (0.0% are) × connection made (99%) × second flight not cancelled (1.3% are) and within 15 minutes (94%).
Total trip11h 04mSEA 21:18 to IAD 11:22, 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.