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

Dulles → Philadelphia via Atlanta: arrives on time 55%

  1. 10:21 IAD → 12:05 ATL
    DL 1324 · Delta · 1h 48m · 85% on time, 4.3% cancelled
  2. 4h 25m layover in Atlanta (ATL) · 45 min minimum on one ticket
  3. 16:30 ATL → 18:37 PHL
    DL 1329 · Delta · 2h 07m · 62% on time, 4.8% cancelled

Total trip 8h 16m, scheduled departure to arrival. Times are local. Both flew on 55 of the last 56 days.

Makes the connection98%The first flight arrived more than 220 minutes late on 2% of the days it flew: too late for the 45-minute minimum connection on a 4h 25m layover.
Arrives on time55%First flight not cancelled (4.3% are) × connection made (98%) × second flight not cancelled (4.8% are) and within 15 minutes (62%).
Total trip8h 16mIAD 10:21 to PHL 18:37, 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.