Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Charlotte → Ontario via Denver: arrives on time 70%
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19:14 CLT → 21:08 DENF9 2369 · Frontier · 3h 54m · 80% on time, 1.6% cancelled
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1h 21m layover in Denver (DEN) · 45 min minimum on one ticket
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22:29 DEN → 23:49 ONTF9 1261 · Frontier · 2h 20m · 81% on time, 0.0% cancelled
Total trip 7h 35m, scheduled departure to arrival (Ontario is 3 h behind Charlotte). Times are local. Both flew on 12 of the last 56 days, too few to list among the best connections.
Makes the connection88%The first flight arrived more than 36 minutes late on 12% of the days it flew: too late for the 45-minute minimum connection on a 1h 21m layover.
Arrives on time70%First flight not cancelled (1.6% are) × connection made (88%) × second flight not cancelled (0.0% are) and within 15 minutes (81%).
Total trip7h 35mCLT 19:14 to ONT 23:49, 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.