Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Chicago → Portland via Atlanta: arrives on time 71%
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11:05 MDW → 14:01 ATLDL 1063 · Delta · 1h 56m · 90% on time, 2.7% cancelled
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2h 51m 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 9h 51m, scheduled departure to arrival (Portland is 2 h behind Chicago). Times are local. Both flew on 55 of the last 56 days.
Makes the connection98%The first flight arrived more than 126 minutes late on 2% of the days it flew: too late for the 45-minute minimum connection on a 2h 51m layover.
Arrives on time71%First flight not cancelled (2.7% are) × connection made (98%) × second flight not cancelled (0.6% are) and within 15 minutes (74%).
Total trip9h 51mMDW 11:05 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.