Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Chicago → Denver via Dulles: arrives on time 47%
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18:12 ORD → 21:22 IADUA 2202 · United · 2h 10m · 57% on time, 3.2% cancelled
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1h 01m layover in Dulles (IAD) · 45 min minimum on one ticket
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22:23 IAD → 00:30 DEN +1 dayUA 495 · United · 4h 07m · 84% on time, 0.3% cancelled
Total trip 7h 18m, scheduled departure to arrival (Denver is 1 h behind Chicago). Times are local. Both flew on 56 of the last 56 days.
Makes the connection58%The first flight arrived more than 16 minutes late on 42% of the days it flew: too late for the 45-minute minimum connection on a 1h 01m layover.
Arrives on time47%First flight not cancelled (3.2% are) × connection made (58%) × second flight not cancelled (0.3% are) and within 15 minutes (84%).
Total trip7h 18mORD 18:12 to DEN 00:30, 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.