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

Chicago → Oakland via Salt Lake City: arrives on time 89%

  1. 08:55 ORD → 11:39 SLC
    UA 1972 · United · 3h 44m · 84% on time, 1.3% cancelled
  2. 3h 41m layover in Salt Lake City (SLC) · 90 min minimum on separate tickets
  3. 15:20 SLC → 16:23 OAK
    DL 3903 · Delta, flown by SkyWest · 2h 03m · 91% on time, 0.0% cancelled

Total trip 9h 28m, scheduled departure to arrival (Oakland is 2 h behind Chicago). Times are local. Both flew on 55 of the last 56 days.

Makes the connection99%The first flight arrived more than 131 minutes late on 1% of the days it flew: too late for the 90-minute minimum connection on a 3h 41m layover.
Arrives on time89%First flight not cancelled (1.3% are) × connection made (99%) × second flight not cancelled (0.0% are) and within 15 minutes (91%).
Total trip9h 28mORD 08:55 to OAK 16:23, 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.