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

Phoenix → Houston via Denver: arrives on time 78%

  1. 06:00 PHX → 08:52 DEN
    UA 337 · United · 1h 52m · 93% on time, 0.0% cancelled
  2. 3h 38m layover in Denver (DEN) · 90 min minimum on separate tickets
  3. 12:30 DEN → 16:05 HOU
    WN 1544 · Southwest · 2h 35m · 79% on time, 0.0% cancelled

Total trip 8h 05m, scheduled departure to arrival (Houston is 2 h ahead of Phoenix). Times are local. Both flew on 40 of the last 56 days.

Makes the connection99%The first flight arrived more than 128 minutes late on 1% of the days it flew: too late for the 90-minute minimum connection on a 3h 38m layover.
Arrives on time78%First flight not cancelled (0.0% are) × connection made (99%) × second flight not cancelled (0.0% are) and within 15 minutes (79%).
Total trip8h 05mPHX 06:00 to HOU 16:05, 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.