Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Philadelphia → San Antonio via Detroit: arrives on time 49%
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17:22 PHL → 19:09 DTWDL 1391 · Delta · 1h 47m · 70% on time, 2.4% cancelled
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1h 01m layover in Detroit (DTW) · 45 min minimum on one ticket
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20:10 DTW → 22:21 SATDL 1365 · Delta · 3h 11m · 72% on time, 1.4% cancelled
Total trip 5h 59m, scheduled departure to arrival (San Antonio is 1 h behind Philadelphia). Times are local. Both flew on 56 of the last 56 days.
Makes the connection70%The first flight arrived more than 16 minutes late on 30% of the days it flew: too late for the 45-minute minimum connection on a 1h 01m layover.
Arrives on time49%First flight not cancelled (2.4% are) × connection made (70%) × second flight not cancelled (1.4% are) and within 15 minutes (72%).
Total trip5h 59mPHL 17:22 to SAT 22:21, 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.