Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Ontario → Atlanta via Denver: arrives on time 8%
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14:30 ONT → 17:40 DENWN 3147 · Southwest · 2h 10m · 24% on time, 0.0% cancelled
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1h 25m layover in Denver (DEN) · 45 min minimum on one ticket
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19:05 DEN → 00:55 ATL +1 dayWN 1472 · Southwest · 3h 00m · 12% on time, 0.0% cancelled
Total trip 6h 35m, scheduled departure to arrival (Atlanta is 3 h ahead of Ontario). Times are local. Both flew on 32 of the last 56 days.
Makes the connection65%The first flight arrived more than 40 minutes late on 35% of the days it flew: too late for the 45-minute minimum connection on a 1h 25m layover.
Arrives on time8%First flight not cancelled (0.0% are) × connection made (65%) × second flight not cancelled (0.0% are) and within 15 minutes (12%).
Total trip6h 35mONT 14:30 to ATL 00:55, 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.