Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Dulles → Miami via Chicago: arrives on time 44%
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15:39 IAD → 17:02 ORDUA 1393 · United · 2h 23m · 64% on time, 2.7% cancelled
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1h 03m layover in Chicago (ORD) · 45 min minimum on one ticket
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18:05 ORD → 22:27 MIAUA 2180 · United · 3h 22m · 69% on time, 0.0% cancelled
Total trip 6h 48m, scheduled departure to arrival. Times are local. Both flew on 36 of the last 56 days.
Makes the connection66%The first flight arrived more than 18 minutes late on 34% of the days it flew: too late for the 45-minute minimum connection on a 1h 03m layover.
Arrives on time44%First flight not cancelled (2.7% are) × connection made (66%) × second flight not cancelled (0.0% are) and within 15 minutes (69%).
Total trip6h 48mIAD 15:39 to MIA 22:27, 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.