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

Tucson → Chicago via Atlanta: arrives on time 66%

  1. 13:29 TUS → 20:11 ATL
    DL 937 · Delta · 3h 42m · 87% on time, 1.6% cancelled
  2. 2h 39m layover in Atlanta (ATL) · 45 min minimum on one ticket
  3. 22:50 ATL → 23:53 ORD
    DL 1199 · Delta · 2h 09m · 71% on time, 2.9% cancelled

Total trip 8h 30m, scheduled departure to arrival (Chicago is 2 h ahead of Tucson). Times are local. Both flew on 56 of the last 56 days.

Makes the connection98%The first flight arrived more than 114 minutes late on 2% of the days it flew: too late for the 45-minute minimum connection on a 2h 39m layover.
Arrives on time66%First flight not cancelled (1.6% are) × connection made (98%) × second flight not cancelled (2.9% are) and within 15 minutes (71%).
Total trip8h 30mTUS 13:29 to ORD 23:53, 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.