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

Boston → Chicago via Atlanta: arrives on time 72%

  1. 09:05 BOS → 11:49 ATL
    DL 456 · Delta · 2h 44m · 90% on time, 2.2% cancelled
  2. 3h 26m layover in Atlanta (ATL) · 45 min minimum on one ticket
  3. 15:15 ATL → 16:15 MDW
    DL 1728 · Delta · 2h 00m · 77% on time, 2.1% cancelled

Total trip 8h 10m, scheduled departure to arrival (Chicago is 1 h behind Boston). Times are local. Both flew on 43 of the last 56 days.

Makes the connection98%The first flight arrived more than 161 minutes late on 2% of the days it flew: too late for the 45-minute minimum connection on a 3h 26m layover.
Arrives on time72%First flight not cancelled (2.2% are) × connection made (98%) × second flight not cancelled (2.1% are) and within 15 minutes (77%).
Total trip8h 10mBOS 09:05 to MDW 16:15, 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.