Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026
Washington → Houston via Dallas: arrives on time 18%
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17:20 DCA → 19:30 DALWN 1403 · Southwest · 3h 10m · 27% on time, 4.0% cancelled
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1h 00m layover in Dallas (DAL) · 45 min minimum on one ticket
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20:30 DAL → 21:40 HOUWN 57 · Southwest · 1h 10m · 72% on time, 2.8% cancelled
Total trip 5h 20m, scheduled departure to arrival (Houston is 1 h behind Washington). Times are local. Both flew on 24 of the last 56 days.
Makes the connection27%The first flight arrived more than 15 minutes late on 73% of the days it flew: too late for the 45-minute minimum connection on a 1h 00m layover.
Arrives on time18%First flight not cancelled (4.0% are) × connection made (27%) × second flight not cancelled (2.8% are) and within 15 minutes (72%).
Total trip5h 20mDCA 17:20 to HOU 21:40, 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.