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

Chicago → New York via Boston: arrives on time 30%

  1. 15:08 ORD → 18:47 BOS
    AA 2303 · American · 2h 39m · 49% on time, 4.2% cancelled
  2. 1h 13m layover in Boston (BOS) · 45 min minimum on one ticket
  3. 20:00 BOS → 21:26 LGA
    AA 4397 · American, flown by Republic · 1h 26m · 64% on time, 13.1% cancelled

Total trip 5h 18m, scheduled departure to arrival (New York is 1 h ahead of Chicago). Times are local. Both flew on 47 of the last 56 days.

Makes the connection57%The first flight arrived more than 28 minutes late on 43% of the days it flew: too late for the 45-minute minimum connection on a 1h 13m layover.
Arrives on time30%First flight not cancelled (4.2% are) × connection made (57%) × second flight not cancelled (13.1% are) and within 15 minutes (64%).
Total trip5h 18mORD 15:08 to LGA 21:26, 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.