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

Chicago → Harrisburg via Dulles: arrives on time 76%

  1. 11:07 ORD → 14:12 IAD
    UA 1869 · United · 2h 05m · 89% on time, 0.0% cancelled
  2. 3h 23m layover in Dulles (IAD) · 45 min minimum on one ticket
  3. 17:35 IAD → 18:44 MDT
    UA 4250 · United, flown by CommuteAir · 1h 09m · 80% on time, 3.3% cancelled

Total trip 6h 37m, scheduled departure to arrival (Harrisburg is 1 h ahead of Chicago). Times are local. Both flew on 56 of the last 56 days.

Makes the connection99%The first flight arrived more than 158 minutes late on 1% of the days it flew: too late for the 45-minute minimum connection on a 3h 23m layover.
Arrives on time76%First flight not cancelled (0.0% are) × connection made (99%) × second flight not cancelled (3.3% are) and within 15 minutes (80%).
Total trip6h 37mORD 11:07 to MDT 18:44, 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.