Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Chicago → Ontario via Salt Lake City: arrives on time 75%
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07:45 ORD → 10:15 SLCDL 2231 · Delta · 3h 30m · 81% on time, 1.1% cancelled
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1h 04m layover in Salt Lake City (SLC) · 45 min minimum on one ticket
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11:19 SLC → 12:10 ONTDL 3172 · Delta · 1h 51m · 91% on time, 0.0% cancelled
Total trip 6h 25m, scheduled departure to arrival (Ontario is 2 h behind Chicago). Times are local. Both flew on 55 of the last 56 days.
Makes the connection83%The first flight arrived more than 19 minutes late on 17% of the days it flew: too late for the 45-minute minimum connection on a 1h 04m layover.
Arrives on time75%First flight not cancelled (1.1% are) × connection made (83%) × second flight not cancelled (0.0% are) and within 15 minutes (91%).
Total trip6h 25mORD 07:45 to ONT 12:10, 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.