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

Chicago → Boise via Atlanta: arrives on time 71%

  1. 06:35 ORD → 09:41 ATL
    DL 1247 · Delta · 2h 06m · 88% on time, 1.1% cancelled
  2. 49m layover in Atlanta (ATL) · 45 min minimum on one ticket
  3. 10:30 ATL → 12:54 BOI
    DL 874 · Delta · 4h 24m · 91% on time, 1.6% cancelled

Total trip 7h 19m, scheduled departure to arrival (Boise is 1 h behind Chicago). Times are local. Both flew on 56 of the last 56 days.

Makes the connection81%The first flight arrived more than 4 minutes late on 19% of the days it flew: too late for the 45-minute minimum connection on a 49m layover.
Arrives on time71%First flight not cancelled (1.1% are) × connection made (81%) × second flight not cancelled (1.6% are) and within 15 minutes (91%).
Total trip7h 19mORD 06:35 to BOI 12:54, 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.