Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Chicago → Portland via Atlanta: arrives on time 62%
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12:50 MDW → 15:49 ATLDL 2417 · Delta · 2h 02m · 86% on time, 3.4% cancelled
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1h 03m layover in Atlanta (ATL) · 45 min minimum on one ticket
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16:52 ATL → 18:56 PDXDL 503 · Delta · 5h 04m · 74% on time, 0.6% cancelled
Total trip 8h 06m, scheduled departure to arrival (Portland is 2 h behind Chicago). Times are local. Both flew on 54 of the last 56 days.
Makes the connection86%The first flight arrived more than 18 minutes late on 14% of the days it flew: too late for the 45-minute minimum connection on a 1h 03m layover.
Arrives on time62%First flight not cancelled (3.4% are) × connection made (86%) × second flight not cancelled (0.6% are) and within 15 minutes (74%).
Total trip8h 06mMDW 12:50 to PDX 18:56, 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.