Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Miami → Seattle via Denver: arrives on time 76%
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06:00 MIA → 08:37 DENF9 1279 · Frontier · 4h 27m · 85% on time, 1.2% cancelled
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3h 23m layover in Denver (DEN) · 45 min minimum on one ticket
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12:00 DEN → 14:01 SEAF9 1175 · Frontier · 3h 04m · 81% on time, 2.2% cancelled
Total trip 11h 04m, scheduled departure to arrival (Seattle is 3 h behind Miami). Times are local. Both flew on 55 of the last 56 days.
Makes the connection97%The first flight arrived more than 158 minutes late on 3% of the days it flew: too late for the 45-minute minimum connection on a 3h 23m layover.
Arrives on time76%First flight not cancelled (1.2% are) × connection made (97%) × second flight not cancelled (2.2% are) and within 15 minutes (81%).
Total trip11h 04mMIA 06:00 to SEA 14:01, 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.