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

San Francisco → Chicago via Detroit: arrives on time 73%

  1. 22:55 SFO → 06:30 DTW
    DL 335 · Delta · 4h 35m · 74% on time, 0.6% cancelled
  2. 2h 20m layover in Detroit (DTW) · 45 min minimum on one ticket
  3. 08:50 DTW → 09:14 MDW +1 day
    DL 4684 · Delta, flown by Endeavor · 1h 24m · 74% on time, 0.0% cancelled

Total trip 8h 19m, scheduled departure to arrival (Chicago is 2 h ahead of San Francisco). Times are local. Both flew on 55 of the last 56 days.

Makes the connection98%The first flight arrived more than 95 minutes late on 2% of the days it flew: too late for the 45-minute minimum connection on a 2h 20m layover.
Arrives on time73%First flight not cancelled (0.6% are) × connection made (98%) × second flight not cancelled (0.0% are) and within 15 minutes (74%).
Total trip8h 19mSFO 22:55 to MDW 09:14, 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.