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

St Louis → Dulles via Atlanta: arrives on time 81%

  1. 06:00 STL → 08:38 ATL
    DL 1524 · Delta · 1h 38m · 96% on time, 1.6% cancelled
  2. 1h 12m layover in Atlanta (ATL) · 45 min minimum on one ticket
  3. 09:50 ATL → 11:39 IAD
    DL 1444 · Delta · 1h 48m · 88% on time, 4.0% cancelled

Total trip 4h 38m, scheduled departure to arrival (Dulles is 1 h ahead of St Louis). Times are local. Both flew on 56 of the last 56 days.

Makes the connection97%The first flight arrived more than 27 minutes late on 3% of the days it flew: too late for the 45-minute minimum connection on a 1h 12m layover.
Arrives on time81%First flight not cancelled (1.6% are) × connection made (97%) × second flight not cancelled (4.0% are) and within 15 minutes (88%).
Total trip4h 38mSTL 06:00 to IAD 11:39, 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.