Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Atlanta → Birmingham via Chicago: arrives on time 46%
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19:04 ATL → 20:30 ORDUA 1046 · United · 2h 26m · 63% on time, 2.6% cancelled
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1h 00m layover in Chicago (ORD) · 45 min minimum on one ticket
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21:30 ORD → 23:34 BHMUA 4447 · United, flown by GoJet · 2h 04m · 79% on time, 5.6% cancelled
Total trip 5h 30m, scheduled departure to arrival (Birmingham is 1 h behind Atlanta). Times are local. Both flew on 36 of the last 56 days.
Makes the connection63%The first flight arrived more than 15 minutes late on 37% of the days it flew: too late for the 45-minute minimum connection on a 1h 00m layover.
Arrives on time46%First flight not cancelled (2.6% are) × connection made (63%) × second flight not cancelled (5.6% are) and within 15 minutes (79%).
Total trip5h 30mATL 19:04 to BHM 23:34, 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.