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

Columbus → Dulles via Atlanta: arrives on time 79%

  1. 07:05 CMH → 08:42 ATL
    DL 2909 · Delta · 1h 39m · 93% on time, 1.3% cancelled
  2. 1h 08m layover in Atlanta (ATL) · 45 min minimum on one ticket
  3. 09:50 ATL → 11:39 IAD
    DL 1444 · Delta · 1h 48m · 88% on time, 4.0% cancelled

Total trip 4h 33m, scheduled departure to arrival. Times are local. Both flew on 55 of the last 56 days.

Makes the connection95%The first flight arrived more than 23 minutes late on 5% of the days it flew: too late for the 45-minute minimum connection on a 1h 08m layover.
Arrives on time79%First flight not cancelled (1.3% are) × connection made (95%) × second flight not cancelled (4.0% are) and within 15 minutes (88%).
Total trip4h 33mCMH 07:05 to IAD 11:39, 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.