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

Chicago → Tucson via Atlanta: arrives on time 71%

  1. 15:22 ORD → 18:36 ATL
    DL 1477 · Delta · 2h 13m · 76% on time, 1.7% cancelled
  2. 2h 18m layover in Atlanta (ATL) · 45 min minimum on one ticket
  3. 20:54 ATL → 21:43 TUS
    DL 1251 · Delta · 3h 47m · 77% on time, 1.2% cancelled

Total trip 8h 19m, scheduled departure to arrival (Tucson is 2 h behind Chicago). Times are local. Both flew on 55 of the last 56 days.

Makes the connection95%The first flight arrived more than 93 minutes late on 5% of the days it flew: too late for the 45-minute minimum connection on a 2h 18m layover.
Arrives on time71%First flight not cancelled (1.7% are) × connection made (95%) × second flight not cancelled (1.2% are) and within 15 minutes (77%).
Total trip8h 19mORD 15:22 to TUS 21:43, 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.