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

Boston → Harrisburg via Dulles: arrives on time 67%

  1. 14:15 BOS → 15:57 IAD
    UA 721 · United · 1h 42m · 78% on time, 2.9% cancelled
  2. 1h 38m 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 4h 29m, scheduled departure to arrival. Times are local. Both flew on 56 of the last 56 days.

Makes the connection90%The first flight arrived more than 53 minutes late on 10% of the days it flew: too late for the 45-minute minimum connection on a 1h 38m layover.
Arrives on time67%First flight not cancelled (2.9% are) × connection made (90%) × second flight not cancelled (3.3% are) and within 15 minutes (80%).
Total trip4h 29mBOS 14:15 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.