Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Chicago → Tucson via Atlanta: arrives on time 82%
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05:30 ORD → 08:33 ATLDL 1264 · Delta · 2h 03m · 91% on time, 1.6% cancelled
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3h 02m layover in Atlanta (ATL) · 45 min minimum on one ticket
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11:35 ATL → 12:19 TUSDL 937 · Delta · 3h 44m · 87% on time, 1.6% cancelled
Total trip 8h 49m, scheduled departure to arrival (Tucson is 2 h behind Chicago). Times are local. Both flew on 56 of the last 56 days.
Makes the connection98%The first flight arrived more than 137 minutes late on 2% of the days it flew: too late for the 45-minute minimum connection on a 3h 02m layover.
Arrives on time82%First flight not cancelled (1.6% are) × connection made (98%) × second flight not cancelled (1.6% are) and within 15 minutes (87%).
Total trip8h 49mORD 05:30 to TUS 12:19, 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.