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

Dulles → St Louis via Atlanta: arrives on time 78%

  1. 06:00 IAD → 07:46 ATL
    DL 2127 · Delta · 1h 46m · 90% on time, 2.6% cancelled
  2. 1h 18m layover in Atlanta (ATL) · 45 min minimum on one ticket
  3. 09:04 ATL → 09:43 STL
    DL 1400 · Delta · 1h 42m · 87% on time, 1.9% cancelled

Total trip 4h 46m, scheduled departure to arrival (St Louis is 1 h behind Dulles). Times are local. Both flew on 56 of the last 56 days.

Makes the connection94%The first flight arrived more than 33 minutes late on 6% of the days it flew: too late for the 45-minute minimum connection on a 1h 18m layover.
Arrives on time78%First flight not cancelled (2.6% are) × connection made (94%) × second flight not cancelled (1.9% are) and within 15 minutes (87%).
Total trip4h 46mIAD 06:00 to STL 09:43, 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.