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

Chicago → San Francisco via Atlanta: arrives on time 65%

  1. 12:50 MDW → 15:49 ATL
    DL 2417 · Delta · 2h 02m · 86% on time, 3.4% cancelled
  2. 2h 19m layover in Atlanta (ATL) · 45 min minimum on one ticket
  3. 18:08 ATL → 20:05 SFO
    DL 517 · Delta · 4h 59m · 69% on time, 0.3% cancelled

Total trip 9h 17m, scheduled departure to arrival (San Francisco is 2 h behind Chicago). Times are local. Both flew on 55 of the last 56 days.

Makes the connection97%The first flight arrived more than 94 minutes late on 3% of the days it flew: too late for the 45-minute minimum connection on a 2h 19m layover.
Arrives on time65%First flight not cancelled (3.4% are) × connection made (97%) × second flight not cancelled (0.3% are) and within 15 minutes (69%).
Total trip9h 17mMDW 12:50 to SFO 20:05, 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.