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

Boston → Dallas via St Louis: arrives on time 10%

  1. 18:50 BOS → 20:55 STL
    WN 754 · Southwest · 3h 05m · 42% on time, 2.0% cancelled
  2. 55m layover in St Louis (STL) · 45 min minimum on one ticket
  3. 21:50 STL → 23:30 DAL
    WN 3904 · Southwest · 1h 40m · 30% on time, 0.0% cancelled

Total trip 5h 40m, scheduled departure to arrival (Dallas is 1 h behind Boston). Times are local. Both flew on 48 of the last 56 days.

Makes the connection35%The first flight arrived more than 10 minutes late on 65% of the days it flew: too late for the 45-minute minimum connection on a 55m layover.
Arrives on time10%First flight not cancelled (2.0% are) × connection made (35%) × second flight not cancelled (0.0% are) and within 15 minutes (30%).
Total trip5h 40mBOS 18:50 to DAL 23:30, 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.