Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Houston → Knoxville via Dulles: arrives on time 63%
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16:35 IAH → 20:46 IADUA 2388 · United · 3h 11m · 70% on time, 0.0% cancelled
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1h 24m layover in Dulles (IAD) · 45 min minimum on one ticket
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22:10 IAD → 23:54 TYSUA 4304 · United, flown by CommuteAir · 1h 44m · 76% on time, 0.6% cancelled
Total trip 6h 19m, scheduled departure to arrival (Knoxville is 1 h ahead of Houston). Times are local. Both flew on 56 of the last 56 days.
Makes the connection83%The first flight arrived more than 39 minutes late on 17% of the days it flew: too late for the 45-minute minimum connection on a 1h 24m layover.
Arrives on time63%First flight not cancelled (0.0% are) × connection made (83%) × second flight not cancelled (0.6% are) and within 15 minutes (76%).
Total trip6h 19mIAH 16:35 to TYS 23:54, 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.