Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Chicago → Philadelphia via Atlanta: arrives on time 40%
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12:11 MDW → 15:13 ATLF9 2144 · Frontier · 2h 02m · 68% on time, 3.0% cancelled
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1h 49m layover in Atlanta (ATL) · 45 min minimum on one ticket
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17:02 ATL → 19:18 PHLF9 2552 · Frontier · 2h 15m · 46% on time, 3.2% cancelled
Total trip 6h 06m, scheduled departure to arrival (Philadelphia is 1 h ahead of Chicago). Times are local. Both flew on 37 of the last 56 days.
Makes the connection93%The first flight arrived more than 64 minutes late on 7% of the days it flew: too late for the 45-minute minimum connection on a 1h 49m layover.
Arrives on time40%First flight not cancelled (3.0% are) × connection made (93%) × second flight not cancelled (3.2% are) and within 15 minutes (46%).
Total trip6h 06mMDW 12:11 to PHL 19:18, 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.