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

Dulles → Seattle via Salt Lake City: arrives on time 82%

  1. 07:15 IAD → 09:52 SLC
    DL 432 · Delta · 4h 37m · 85% on time, 1.6% cancelled
  2. 1h 43m layover in Salt Lake City (SLC) · 45 min minimum on one ticket
  3. 11:35 SLC → 12:52 SEA
    DL 2995 · Delta · 2h 17m · 89% on time, 0.5% cancelled

Total trip 8h 37m, scheduled departure to arrival (Seattle is 3 h behind Dulles). Times are local. Both flew on 56 of the last 56 days.

Makes the connection94%The first flight arrived more than 58 minutes late on 6% of the days it flew: too late for the 45-minute minimum connection on a 1h 43m layover.
Arrives on time82%First flight not cancelled (1.6% are) × connection made (94%) × second flight not cancelled (0.5% are) and within 15 minutes (89%).
Total trip8h 37mIAD 07:15 to SEA 12:52, 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.