Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Chicago → Dulles via Atlanta: arrives on time 78%
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05:30 ORD → 08:33 ATLDL 1264 · Delta · 2h 03m · 91% on time, 1.6% cancelled
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1h 17m layover in Atlanta (ATL) · 45 min minimum on one ticket
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09:50 ATL → 11:39 IADDL 1444 · Delta · 1h 48m · 88% on time, 4.0% cancelled
Total trip 5h 08m, scheduled departure to arrival (Dulles is 1 h ahead of Chicago). Times are local. Both flew on 56 of the last 56 days.
Makes the connection93%The first flight arrived more than 32 minutes late on 7% of the days it flew: too late for the 45-minute minimum connection on a 1h 17m layover.
Arrives on time78%First flight not cancelled (1.6% are) × connection made (93%) × second flight not cancelled (4.0% are) and within 15 minutes (88%).
Total trip5h 08mORD 05:30 to IAD 11:39, 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.