Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Atlanta → Denver via Philadelphia: arrives on time 41%
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14:10 ATL → 16:25 PHLAA 621 · American · 2h 15m · 65% on time, 3.0% cancelled
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1h 05m layover in Philadelphia (PHL) · 45 min minimum on one ticket
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17:30 PHL → 19:45 DENAA 3158 · American · 4h 15m · 64% on time, 1.9% cancelled
Total trip 7h 35m, scheduled departure to arrival (Denver is 2 h behind Atlanta). Times are local. Both flew on 56 of the last 56 days.
Makes the connection67%The first flight arrived more than 20 minutes late on 33% of the days it flew: too late for the 45-minute minimum connection on a 1h 05m layover.
Arrives on time41%First flight not cancelled (3.0% are) × connection made (67%) × second flight not cancelled (1.9% are) and within 15 minutes (64%).
Total trip7h 35mATL 14:10 to DEN 19:45, 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.