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

Dulles → St Louis via Chicago: arrives on time 68%

  1. 10:31 IAD → 11:53 ORD
    UA 1252 · United · 2h 22m · 92% on time, 0.8% cancelled
  2. 2h 27m layover in Chicago (ORD) · 45 min minimum on one ticket
  3. 14:20 ORD → 15:46 STL
    UA 2000 · United · 1h 26m · 68% on time, 0.0% cancelled

Total trip 6h 15m, scheduled departure to arrival (St Louis is 1 h behind Dulles). Times are local. Both flew on 56 of the last 56 days.

Makes the connection100%The first flight arrived more than 102 minutes late on 0% of the days it flew: too late for the 45-minute minimum connection on a 2h 27m layover.
Arrives on time68%First flight not cancelled (0.8% are) × connection made (100%) × second flight not cancelled (0.0% are) and within 15 minutes (68%).
Total trip6h 15mIAD 10:31 to STL 15:46, 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.