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

Boston → St Louis via Atlanta: arrives on time 58%

  1. 19:15 BOS → 22:19 ATL
    DL 973 · Delta · 3h 04m · 81% on time, 2.5% cancelled
  2. 51m layover in Atlanta (ATL) · 45 min minimum on one ticket
  3. 23:10 ATL → 23:53 STL
    DL 1403 · Delta · 1h 46m · 83% on time, 1.8% cancelled

Total trip 5h 41m, scheduled departure to arrival (St Louis is 1 h behind Boston). Times are local. Both flew on 56 of the last 56 days.

Makes the connection73%The first flight arrived more than 6 minutes late on 27% of the days it flew: too late for the 45-minute minimum connection on a 51m layover.
Arrives on time58%First flight not cancelled (2.5% are) × connection made (73%) × second flight not cancelled (1.8% are) and within 15 minutes (83%).
Total trip5h 41mBOS 19:15 to STL 23:53, 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.