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

Dulles → Miami via Atlanta: arrives on time 34%

  1. 15:02 IAD → 16:54 ATL
    DL 2135 · Delta · 1h 52m · 73% on time, 0.0% cancelled
  2. 51m layover in Atlanta (ATL) · 45 min minimum on one ticket
  3. 17:45 ATL → 19:56 MIA
    DL 1631 · Delta · 2h 11m · 51% on time, 3.6% cancelled

Total trip 4h 54m, scheduled departure to arrival. Times are local. Both flew on 55 of the last 56 days.

Makes the connection68%The first flight arrived more than 6 minutes late on 32% of the days it flew: too late for the 45-minute minimum connection on a 51m layover.
Arrives on time34%First flight not cancelled (0.0% are) × connection made (68%) × second flight not cancelled (3.6% are) and within 15 minutes (51%).
Total trip4h 54mIAD 15:02 to MIA 19:56, 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.