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

Pittsburgh → St Louis via Chicago: arrives on time 41%

  1. 20:10 PIT → 20:40 MDW
    WN 4073 · Southwest · 1h 30m · 71% on time, 2.4% cancelled
  2. 55m layover in Chicago (MDW) · 45 min minimum on one ticket
  3. 21:35 MDW → 22:50 STL
    WN 2905 · Southwest · 1h 15m · 64% on time, 3.5% cancelled

Total trip 3h 40m, scheduled departure to arrival (St Louis is 1 h behind Pittsburgh). Times are local. Both flew on 40 of the last 56 days.

Makes the connection68%The first flight arrived more than 10 minutes late on 32% of the days it flew: too late for the 45-minute minimum connection on a 55m layover.
Arrives on time41%First flight not cancelled (2.4% are) × connection made (68%) × second flight not cancelled (3.5% are) and within 15 minutes (64%).
Total trip3h 40mPIT 20:10 to STL 22:50, 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.