tailodds FORECAST
Connection · two tickets · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026

Denver → Birmingham via Houston: arrives on time 90%

  1. 07:00 DEN → 10:42 IAH
    F9 3206 · Frontier · 2h 42m · 87% on time, 0.3% cancelled
  2. 3h 43m layover in Houston (IAH) · 90 min minimum on separate tickets
  3. 14:25 IAH → 16:20 BHM
    UA 6120 · United, flown by Mesa · 1h 55m · 91% on time, 0.0% cancelled

Total trip 8h 20m, scheduled departure to arrival (Birmingham is 1 h ahead of Denver). Times are local. Both flew on 32 of the last 56 days.

Makes the connection99%The first flight arrived more than 133 minutes late on 1% of the days it flew: too late for the 90-minute minimum connection on a 3h 43m layover.
Arrives on time90%First flight not cancelled (0.3% are) × connection made (99%) × second flight not cancelled (0.0% are) and within 15 minutes (91%).
Total trip8h 20mDEN 07:00 to BHM 16:20, 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.