Connection · two tickets · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Chicago → Ontario via Seattle: arrives on time 82%
-
07:00 ORD → 09:40 SEAUA 341 · United · 4h 40m · 89% on time, 0.0% cancelled
-
2h 13m layover in Seattle (SEA) · 90 min minimum on separate tickets
-
11:53 SEA → 14:39 ONTF9 2276 · Frontier · 2h 46m · 88% on time, 4.0% cancelled
Total trip 9h 39m, scheduled departure to arrival (Ontario is 2 h behind Chicago). Times are local. Both flew on 56 of the last 56 days.
Makes the connection97%The first flight arrived more than 43 minutes late on 3% of the days it flew: too late for the 90-minute minimum connection on a 2h 13m layover.
Arrives on time82%First flight not cancelled (0.0% are) × connection made (97%) × second flight not cancelled (4.0% are) and within 15 minutes (88%).
Total trip9h 39mORD 07:00 to ONT 14:39, 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.