Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Houston → Dulles via Philadelphia: arrives on time 32%
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14:31 IAH → 18:57 PHLUA 2748 · United · 3h 26m · 55% on time, 3.8% cancelled
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48m layover in Philadelphia (PHL) · 45 min minimum on one ticket
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19:45 PHL → 21:10 IADUA 4587 · United, flown by GoJet · 1h 25m · 84% on time, 11.4% cancelled
Total trip 5h 39m, scheduled departure to arrival (Dulles is 1 h ahead of Houston). Times are local. Both flew on 21 of the last 56 days.
Makes the connection45%The first flight arrived more than 3 minutes late on 55% of the days it flew: too late for the 45-minute minimum connection on a 48m layover.
Arrives on time32%First flight not cancelled (3.8% are) × connection made (45%) × second flight not cancelled (11.4% are) and within 15 minutes (84%).
Total trip5h 39mIAH 14:31 to IAD 21:10, 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.