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

Dulles → St Louis via Atlanta: arrives on time 72%

  1. 15:02 IAD → 16:54 ATL
    DL 2135 · Delta · 1h 52m · 73% on time, 0.0% cancelled
  2. 4h 39m layover in Atlanta (ATL) · 45 min minimum on one ticket
  3. 21:33 ATL → 22:15 STL
    DL 2833 · Delta · 1h 45m · 76% on time, 1.6% cancelled

Total trip 8h 16m, scheduled departure to arrival (St Louis is 1 h behind Dulles). Times are local. Both flew on 55 of the last 56 days.

Makes the connection96%The first flight arrived more than 234 minutes late on 4% of the days it flew: too late for the 45-minute minimum connection on a 4h 39m layover.
Arrives on time72%First flight not cancelled (0.0% are) × connection made (96%) × second flight not cancelled (1.6% are) and within 15 minutes (76%).
Total trip8h 16mIAD 15:02 to STL 22:15, 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.