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

Chicago → Boston via Dallas-Fort Worth: arrives on time 34%

  1. 13:25 ORD → 15:59 DFW
    AA 1120 · American · 2h 34m · 49% on time, 1.7% cancelled
  2. 1h 28m layover in Dallas-Fort Worth (DFW) · 45 min minimum on one ticket
  3. 17:27 DFW → 22:17 BOS
    AA 2306 · American · 3h 50m · 55% on time, 3.8% cancelled

Total trip 7h 52m, scheduled departure to arrival (Boston is 1 h ahead of Chicago). Times are local. Both flew on 56 of the last 56 days.

Makes the connection65%The first flight arrived more than 43 minutes late on 35% of the days it flew: too late for the 45-minute minimum connection on a 1h 28m layover.
Arrives on time34%First flight not cancelled (1.7% are) × connection made (65%) × second flight not cancelled (3.8% are) and within 15 minutes (55%).
Total trip7h 52mORD 13:25 to BOS 22:17, 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.