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

Washington → Ontario via Chicago: arrives on time 19%

  1. 18:10 DCA → 19:32 ORD
    UA 2148 · United · 2h 22m · 51% on time, 2.7% cancelled
  2. 46m 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 7h 41m, scheduled departure to arrival (Ontario is 3 h behind Washington). Times are local. Both flew on 48 of the last 56 days.

Makes the connection34%The first flight arrived more than 1 minutes late on 66% of the days it flew: too late for the 45-minute minimum connection on a 46m layover.
Arrives on time19%First flight not cancelled (2.7% are) × connection made (34%) × second flight not cancelled (2.5% are) and within 15 minutes (60%).
Total trip7h 41mDCA 18:10 to ONT 22:51, layover included

Tight connection: often missed. The first flight is late enough to miss it on more than 1 day in 4.

Not yet counted: the second flight also leaving late (which helps), gate-to-gate distance at the hub, and rebooking after a missed connection.