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

Boston → Atlanta via Chicago: arrives on time 32%

  1. 13:01 BOS → 15:10 ORD
    AA 4386 · American, flown by Republic · 3h 09m · 80% on time, 4.2% cancelled
  2. 49m layover in Chicago (ORD) · 45 min minimum on one ticket
  3. 15:59 ORD → 19:02 ATL
    AA 1375 · American · 2h 04m · 46% on time, 1.4% cancelled

Total trip 6h 02m, scheduled departure to arrival. Times are local. Both flew on 56 of the last 56 days.

Makes the connection73%The first flight arrived more than 4 minutes late on 27% of the days it flew: too late for the 45-minute minimum connection on a 49m layover.
Arrives on time32%First flight not cancelled (4.2% are) × connection made (73%) × second flight not cancelled (1.4% are) and within 15 minutes (46%).
Total trip6h 02mBOS 13:01 to ATL 19:02, layover included

Tight connection: often missed. The first flight is late enough to miss it on more than 1 day in 4.

Not yet counted: the second flight also leaving late (which helps), gate-to-gate distance at the hub, and rebooking after a missed connection.