Connection · two tickets · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
San Antonio → Dulles via Denver: arrives on time 87%
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09:05 SAT → 10:15 DENWN 1577 · Southwest · 2h 10m · 81% on time, 0.0% cancelled
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3h 38m layover in Denver (DEN) · 90 min minimum on separate tickets
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13:53 DEN → 19:22 IADUA 347 · United · 3h 29m · 87% on time, 0.3% cancelled
Total trip 9h 17m, scheduled departure to arrival (Dulles is 1 h ahead of San Antonio). Times are local. Both flew on 24 of the last 56 days.
Makes the connection100%The first flight arrived more than 128 minutes late on 0% of the days it flew: too late for the 90-minute minimum connection on a 3h 38m layover.
Arrives on time87%First flight not cancelled (0.0% are) × connection made (100%) × second flight not cancelled (0.3% are) and within 15 minutes (87%).
Total trip9h 17mSAT 09:05 to IAD 19:22, 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.