Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Dallas-Fort Worth → Ontario via Chicago: arrives on time 41%
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16:13 DFW → 18:55 ORDUA 2299 · United · 2h 42m · 57% on time, 3.2% cancelled
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1h 23m layover in Chicago (ORD) · 45 min minimum on one ticket
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20:18 ORD → 22:51 ONTUA 658 · United · 4h 33m · 60% on time, 2.5% cancelled
Total trip 8h 38m, scheduled departure to arrival (Ontario is 2 h behind Dallas-Fort Worth). Times are local. Both flew on 31 of the last 56 days.
Makes the connection73%The first flight arrived more than 38 minutes late on 27% of the days it flew: too late for the 45-minute minimum connection on a 1h 23m layover.
Arrives on time41%First flight not cancelled (3.2% are) × connection made (73%) × second flight not cancelled (2.5% are) and within 15 minutes (60%).
Total trip8h 38mDFW 16:13 to ONT 22:51, layover included
Tight connection: often missed. The first flight is late enough to miss it on more than 1 day in 4.
Not yet counted: the second flight also leaving late (which helps), gate-to-gate distance at the hub, and rebooking after a missed connection.