Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Ontario → Chicago via San Francisco: arrives on time 56%
-
13:50 ONT → 15:15 SFOUA 1375 · United · 1h 25m · 57% on time, 0.0% cancelled
-
3h 19m layover in San Francisco (SFO) · 45 min minimum on one ticket
-
18:34 SFO → 00:59 ORD +1 dayUA 1375 · United · 4h 25m · 58% on time, 0.0% cancelled
Total trip 9h 09m, scheduled departure to arrival (Chicago is 2 h ahead of Ontario). Times are local. Both flew on 32 of the last 56 days.
Makes the connection97%The first flight arrived more than 154 minutes late on 3% of the days it flew: too late for the 45-minute minimum connection on a 3h 19m layover.
Arrives on time56%First flight not cancelled (0.0% are) × connection made (97%) × second flight not cancelled (0.0% are) and within 15 minutes (58%).
Total trip9h 09mONT 13:50 to ORD 00:59, 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.