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

New York → Chicago via Boston: arrives on time 19%

  1. 15:09 LGA → 16:35 BOS
    AA 4370 · American, flown by Republic · 1h 25m · 58% on time, 5.7% cancelled
  2. 1h 03m layover in Boston (BOS) · 45 min minimum on one ticket
  3. 17:38 BOS → 19:59 ORD
    AA 1592 · American · 3h 21m · 38% on time, 8.3% cancelled

Total trip 5h 50m, scheduled departure to arrival (Chicago is 1 h behind New York). Times are local. Both flew on 55 of the last 56 days.

Makes the connection58%The first flight arrived more than 18 minutes late on 42% of the days it flew: too late for the 45-minute minimum connection on a 1h 03m layover.
Arrives on time19%First flight not cancelled (5.7% are) × connection made (58%) × second flight not cancelled (8.3% are) and within 15 minutes (38%).
Total trip5h 50mLGA 15:09 to ORD 19:59, 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.