Connection · two tickets · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026

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

  1. 07:15 MDW → 10:05 ATL
    WN 3054 · Southwest · 1h 50m · 93% on time, 0.0% cancelled
  2. 2h 51m layover in Atlanta (ATL) · 90 min minimum on separate tickets
  3. 12:56 ATL → 14:50 SFO
    DL 750 · Delta · 4h 58m · 73% on time, 0.5% cancelled

Total trip 9h 39m, scheduled departure to arrival (San Francisco is 2 h behind Chicago). Times are local. Both flew on 40 of the last 56 days.

Makes the connection100%The first flight arrived more than 81 minutes late on 0% of the days it flew: too late for the 90-minute minimum connection on a 2h 51m layover.
Arrives on time73%First flight not cancelled (0.0% are) × connection made (100%) × second flight not cancelled (0.5% are) and within 15 minutes (73%).
Total trip9h 39mMDW 07:15 to SFO 14:50, 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.