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

Atlanta → Harrisburg via Dulles: arrives on time 83%

  1. 05:30 ATL → 07:20 IAD
    UA 641 · United · 1h 50m · 96% on time, 1.0% cancelled
  2. 1h 15m layover in Dulles (IAD) · 45 min minimum on one ticket
  3. 08:35 IAD → 09:40 MDT
    UA 4986 · United, flown by CommuteAir · 1h 05m · 87% on time, 1.4% cancelled

Total trip 4h 10m, scheduled departure to arrival. Times are local. Both flew on 46 of the last 56 days.

Makes the connection98%The first flight arrived more than 30 minutes late on 2% of the days it flew: too late for the 45-minute minimum connection on a 1h 15m layover.
Arrives on time83%First flight not cancelled (1.0% are) × connection made (98%) × second flight not cancelled (1.4% are) and within 15 minutes (87%).
Total trip4h 10mATL 05:30 to MDT 09:40, 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.