Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Chicago → Miami via Atlanta: arrives on time 46%
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13:40 ORD → 17:01 ATLF9 1442 · Frontier · 2h 22m · 62% on time, 4.0% cancelled
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3h 54m layover in Atlanta (ATL) · 45 min minimum on one ticket
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20:55 ATL → 23:05 MIAF9 3442 · Frontier · 2h 08m · 51% on time, 2.7% cancelled
Total trip 8h 23m, scheduled departure to arrival (Miami is 1 h ahead of Chicago). Times are local. Both flew on 32 of the last 56 days.
Makes the connection96%The first flight arrived more than 189 minutes late on 4% of the days it flew: too late for the 45-minute minimum connection on a 3h 54m layover.
Arrives on time46%First flight not cancelled (4.0% are) × connection made (96%) × second flight not cancelled (2.7% are) and within 15 minutes (51%).
Total trip8h 23mORD 13:40 to MIA 23:05, 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.