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

Washington → Houston via Denver: arrives on time 50%

  1. 18:00 DCA → 20:07 DEN
    F9 689 · Frontier · 4h 07m · 68% on time, 1.3% cancelled
  2. 59m layover in Denver (DEN) · 45 min minimum on one ticket
  3. 21:06 DEN → 00:44 IAH +1 day
    F9 2996 · Frontier · 2h 38m · 76% on time, 0.0% cancelled

Total trip 7h 44m, scheduled departure to arrival (Houston is 1 h behind Washington). Times are local. Both flew on 46 of the last 56 days.

Makes the connection67%The first flight arrived more than 14 minutes late on 33% of the days it flew: too late for the 45-minute minimum connection on a 59m layover.
Arrives on time50%First flight not cancelled (1.3% are) × connection made (67%) × second flight not cancelled (0.0% are) and within 15 minutes (76%).
Total trip7h 44mDCA 18:00 to IAH 00:44, 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.