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

Sacramento → Chicago via Atlanta: arrives on time 69%

  1. 12:18 SMF → 20:02 ATL
    DL 904 · Delta · 4h 44m · 91% on time, 2.2% cancelled
  2. 1h 13m layover in Atlanta (ATL) · 45 min minimum on one ticket
  3. 21:15 ATL → 22:17 MDW
    DL 1076 · Delta · 2h 02m · 77% on time, 2.5% cancelled

Total trip 7h 59m, scheduled departure to arrival (Chicago is 2 h ahead of Sacramento). Times are local. Both flew on 56 of the last 56 days.

Makes the connection93%The first flight arrived more than 28 minutes late on 7% of the days it flew: too late for the 45-minute minimum connection on a 1h 13m layover.
Arrives on time69%First flight not cancelled (2.2% are) × connection made (93%) × second flight not cancelled (2.5% are) and within 15 minutes (77%).
Total trip7h 59mSMF 12:18 to MDW 22:17, 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.