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

Raleigh/Durham → St Louis via Chicago: arrives on time 43%

  1. 19:28 RDU → 20:28 MDW
    WN 3766 · Southwest · 2h 00m · 57% on time, 2.0% cancelled
  2. 1h 07m 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 4h 22m, scheduled departure to arrival (St Louis is 1 h behind Raleigh/Durham). Times are local. Both flew on 48 of the last 56 days.

Makes the connection71%The first flight arrived more than 22 minutes late on 29% of the days it flew: too late for the 45-minute minimum connection on a 1h 07m layover.
Arrives on time43%First flight not cancelled (2.0% are) × connection made (71%) × second flight not cancelled (3.5% are) and within 15 minutes (64%).
Total trip4h 22mRDU 19:28 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.