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

Ontario → Dulles via Salt Lake City: arrives on time 80%

  1. 13:00 ONT → 15:47 SLC
    DL 3172 · Delta · 1h 47m · 95% on time, 0.0% cancelled
  2. 1h 43m layover in Salt Lake City (SLC) · 45 min minimum on one ticket
  3. 17:30 SLC → 23:30 IAD
    DL 847 · Delta · 4h 00m · 84% on time, 1.6% cancelled

Total trip 7h 30m, scheduled departure to arrival (Dulles is 3 h ahead of Ontario). Times are local. Both flew on 55 of the last 56 days.

Makes the connection96%The first flight arrived more than 58 minutes late on 4% of the days it flew: too late for the 45-minute minimum connection on a 1h 43m layover.
Arrives on time80%First flight not cancelled (0.0% are) × connection made (96%) × second flight not cancelled (1.6% are) and within 15 minutes (84%).
Total trip7h 30mONT 13:00 to IAD 23:30, 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.