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

Boston → Chicago via Dulles: arrives on time 89%

  1. 05:45 BOS → 07:23 IAD
    UA 1734 · United · 1h 38m · 97% on time, 2.3% cancelled
  2. 3h 08m layover in Dulles (IAD) · 45 min minimum on one ticket
  3. 10:31 IAD → 11:53 ORD
    UA 1252 · United · 2h 22m · 92% on time, 0.8% cancelled

Total trip 7h 08m, scheduled departure to arrival (Chicago is 1 h behind Boston). Times are local. Both flew on 56 of the last 56 days.

Makes the connection100%The first flight arrived more than 143 minutes late on <1% of the days it flew: too late for the 45-minute minimum connection on a 3h 08m layover.
Arrives on time89%First flight not cancelled (2.3% are) × connection made (100%) × second flight not cancelled (0.8% are) and within 15 minutes (92%).
Total trip7h 08mBOS 05:45 to ORD 11:53, 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.