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

Dulles → Ontario via Chicago: arrives on time 50%

  1. 15:39 IAD → 17:02 ORD
    UA 1393 · United · 2h 23m · 64% on time, 2.7% cancelled
  2. 3h 16m layover in Chicago (ORD) · 45 min minimum on one ticket
  3. 20:18 ORD → 22:51 ONT
    UA 658 · United · 4h 33m · 60% on time, 2.5% cancelled

Total trip 10h 12m, scheduled departure to arrival (Ontario is 3 h behind Dulles). Times are local. Both flew on 37 of the last 56 days.

Makes the connection89%The first flight arrived more than 151 minutes late on 11% of the days it flew: too late for the 45-minute minimum connection on a 3h 16m layover.
Arrives on time50%First flight not cancelled (2.7% are) × connection made (89%) × second flight not cancelled (2.5% are) and within 15 minutes (60%).
Total trip10h 12mIAD 15:39 to ONT 22:51, 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.