Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Houston → Phoenix via Detroit: arrives on time 53%
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14:54 IAH → 18:49 DTWF9 1958 · Frontier · 2h 55m · 69% on time, 1.3% cancelled
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1h 04m layover in Detroit (DTW) · 45 min minimum on one ticket
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19:53 DTW → 21:20 PHXF9 4671 · Frontier · 4h 21m · 75% on time, 0.4% cancelled
Total trip 8h 20m, scheduled departure to arrival (Phoenix is 2 h behind Houston). Times are local. Both flew on 55 of the last 56 days.
Makes the connection73%The first flight arrived more than 19 minutes late on 27% of the days it flew: too late for the 45-minute minimum connection on a 1h 04m layover.
Arrives on time53%First flight not cancelled (1.3% are) × connection made (73%) × second flight not cancelled (0.4% are) and within 15 minutes (75%).
Total trip8h 20mIAH 14:54 to PHX 21:20, 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.