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

Boston → San Antonio via St Louis: arrives on time 37%

  1. 18:50 BOS → 20:55 STL
    WN 754 · Southwest · 3h 05m · 42% on time, 2.0% cancelled
  2. 1h 20m layover in St Louis (STL) · 45 min minimum on one ticket
  3. 22:15 STL → 00:25 SAT +1 day
    WN 3979 · Southwest · 2h 05m · 65% on time, 0.0% cancelled

Total trip 6h 30m, scheduled departure to arrival (San Antonio is 1 h behind Boston). Times are local. Both flew on 40 of the last 56 days.

Makes the connection58%The first flight arrived more than 35 minutes late on 42% of the days it flew: too late for the 45-minute minimum connection on a 1h 20m layover.
Arrives on time37%First flight not cancelled (2.0% are) × connection made (58%) × second flight not cancelled (0.0% are) and within 15 minutes (65%).
Total trip6h 30mBOS 18:50 to SAT 00:25, 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.