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

Chicago → Boise via Seattle: arrives on time 87%

  1. 08:45 ORD → 11:38 SEA
    UA 2099 · United · 4h 53m · 83% on time, 0.0% cancelled
  2. 3h 16m layover in Seattle (SEA) · 90 min minimum on separate tickets
  3. 14:54 SEA → 17:30 BOI
    DL 4127 · Delta, flown by SkyWest · 1h 36m · 88% on time, 0.3% cancelled

Total trip 9h 45m, scheduled departure to arrival (Boise is 1 h behind Chicago). Times are local. Both flew on 56 of the last 56 days.

Makes the connection98%The first flight arrived more than 106 minutes late on 2% of the days it flew: too late for the 90-minute minimum connection on a 3h 16m layover.
Arrives on time87%First flight not cancelled (0.0% are) × connection made (98%) × second flight not cancelled (0.3% are) and within 15 minutes (88%).
Total trip9h 45mORD 08:45 to BOI 17:30, 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.