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

Boston → San Antonio via Chicago: arrives on time 42%

  1. 16:45 BOS → 18:35 MDW
    WN 4106 · Southwest · 2h 50m · 54% on time, 2.4% cancelled
  2. 2h 50m layover in Chicago (MDW) · 45 min minimum on one ticket
  3. 21:25 MDW → 00:20 SAT +1 day
    WN 3229 · Southwest · 2h 40m · 47% on time, 3.5% cancelled

Total trip 8h 20m, 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 connection95%The first flight arrived more than 125 minutes late on 5% of the days it flew: too late for the 45-minute minimum connection on a 2h 50m layover.
Arrives on time42%First flight not cancelled (2.4% are) × connection made (95%) × second flight not cancelled (3.5% are) and within 15 minutes (47%).
Total trip8h 20mBOS 16:45 to SAT 00:20, 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.