Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Chicago → Jacksonville via Atlanta: arrives on time 37%
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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 05m layover in Atlanta (ATL) · 45 min minimum on one ticket
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16:18 ATL → 17:34 JAXF9 1550 · Frontier · 1h 16m · 55% on time, 1.0% cancelled
Total trip 4h 23m, scheduled departure to arrival (Jacksonville is 1 h ahead of Chicago). Times are local. Both flew on 50 of the last 56 days.
Makes the connection71%The first flight arrived more than 20 minutes late on 29% of the days it flew: too late for the 45-minute minimum connection on a 1h 05m layover.
Arrives on time37%First flight not cancelled (3.0% are) × connection made (71%) × second flight not cancelled (1.0% are) and within 15 minutes (55%).
Total trip4h 23mMDW 12:11 to JAX 17:34, 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.