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

Boston → Buffalo via Chicago: arrives on time 80%

  1. 05:25 BOS → 07:00 MDW
    WN 3239 · Southwest · 2h 35m · 91% on time, 0.0% cancelled
  2. 52m layover in Chicago (MDW) · 45 min minimum on one ticket
  3. 07:52 MDW → 10:25 BUF
    WN 758 · Southwest · 1h 30m · 94% on time, 0.0% cancelled

Total trip 4h 57m, scheduled departure to arrival. Times are local. Both flew on 31 of the last 56 days.

Makes the connection85%The first flight arrived more than 7 minutes late on 15% of the days it flew: too late for the 45-minute minimum connection on a 52m layover.
Arrives on time80%First flight not cancelled (0.0% are) × connection made (85%) × second flight not cancelled (0.0% are) and within 15 minutes (94%).
Total trip4h 57mBOS 05:25 to BUF 10:25, 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.