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. 15:10 BOS → 18:10 ATL
    DL 638 · Delta · 3h 00m · 80% on time, 1.1% cancelled
  2. 3h 05m layover in Atlanta (ATL) · 45 min minimum on one ticket
  3. 21:15 ATL → 22:17 MDW
    DL 1076 · Delta · 2h 02m · 77% on time, 2.5% cancelled

Total trip 8h 07m, scheduled departure to arrival (Chicago is 1 h behind Boston). Times are local. Both flew on 47 of the last 56 days.

Makes the connection96%The first flight arrived more than 140 minutes late on 4% of the days it flew: too late for the 45-minute minimum connection on a 3h 05m layover.
Arrives on time72%First flight not cancelled (1.1% are) × connection made (96%) × second flight not cancelled (2.5% are) and within 15 minutes (77%).
Total trip8h 07mBOS 15:10 to MDW 22:17, 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.