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

Dulles → Greenville via Detroit: arrives on time 56%

  1. 17:29 IAD → 19:07 DTW
    DL 1787 · Delta · 1h 38m · 76% on time, 3.8% cancelled
  2. 58m layover in Detroit (DTW) · 45 min minimum on one ticket
  3. 20:05 DTW → 21:48 GSP
    DL 1561 · Delta · 1h 43m · 80% on time, 2.3% cancelled

Total trip 4h 19m, scheduled departure to arrival. Times are local. Both flew on 48 of the last 56 days.

Makes the connection75%The first flight arrived more than 13 minutes late on 25% of the days it flew: too late for the 45-minute minimum connection on a 58m layover.
Arrives on time56%First flight not cancelled (3.8% are) × connection made (75%) × second flight not cancelled (2.3% are) and within 15 minutes (80%).
Total trip4h 19mIAD 17:29 to GSP 21:48, layover included

Tight connection: often missed. The first flight is late enough to miss it on more than 1 day in 4.

Not yet counted: the second flight also leaving late (which helps), gate-to-gate distance at the hub, and rebooking after a missed connection.