Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026

Houston → Washington via Nashville: arrives on time 33%

  1. 11:00 HOU → 12:55 BNA
    WN 1955 · Southwest · 1h 55m · 73% on time, 2.0% cancelled
  2. 1h 00m layover in Nashville (BNA) · 45 min minimum on one ticket
  3. 13:55 BNA → 16:45 DCA
    WN 4380 · Southwest · 1h 45m · 48% on time, 3.7% cancelled

Total trip 4h 40m, scheduled departure to arrival (Washington is 1 h ahead of Houston). Times are local. Both flew on 47 of the last 56 days.

Makes the connection73%The first flight arrived more than 15 minutes late on 27% of the days it flew: too late for the 45-minute minimum connection on a 1h 00m layover.
Arrives on time33%First flight not cancelled (2.0% are) × connection made (73%) × second flight not cancelled (3.7% are) and within 15 minutes (48%).
Total trip4h 40mHOU 11:00 to DCA 16:45, 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.