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

Seattle → Dulles via Atlanta: arrives on time 85%

  1. 22:58 SEA → 06:45 ATL
    DL 409 · Delta · 4h 47m · 83% on time, 0.0% cancelled
  2. 3h 05m layover in Atlanta (ATL) · 45 min minimum on one ticket
  3. 09:50 ATL → 11:39 IAD +1 day
    DL 1444 · Delta · 1h 48m · 88% on time, 4.0% cancelled

Total trip 9h 40m, scheduled departure to arrival (Dulles is 3 h ahead of Seattle). Times are local. Both flew on 23 of the last 56 days.

Makes the connection100%The first flight arrived more than 140 minutes late on 0% of the days it flew: too late for the 45-minute minimum connection on a 3h 05m layover.
Arrives on time85%First flight not cancelled (0.0% are) × connection made (100%) × second flight not cancelled (4.0% are) and within 15 minutes (88%).
Total trip9h 40mSEA 22:58 to IAD 11:39, 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.