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

Denver → Boise via Salt Lake City: arrives on time 91%

  1. 06:00 DEN → 07:31 SLC
    F9 3219 · Frontier · 1h 31m · 83% on time, 1.0% cancelled
  2. 3h 29m layover in Salt Lake City (SLC) · 90 min minimum on separate tickets
  3. 11:00 SLC → 12:15 BOI
    DL 1442 · Delta · 1h 17m · 93% on time, 0.0% cancelled

Total trip 6h 17m, scheduled departure to arrival. Times are local. Both flew on 55 of the last 56 days.

Makes the connection99%The first flight arrived more than 119 minutes late on 1% of the days it flew: too late for the 90-minute minimum connection on a 3h 29m layover.
Arrives on time91%First flight not cancelled (1.0% are) × connection made (99%) × second flight not cancelled (0.0% are) and within 15 minutes (93%).
Total trip6h 17mDEN 06:00 to BOI 12:15, 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.