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

Chicago → Portland via New York: arrives on time 25%

  1. 17:35 ORD → 21:00 LGA
    DL 2336 · Delta · 2h 25m · 51% on time, 14.5% cancelled
  2. 59m layover in New York (LGA) · 45 min minimum on one ticket
  3. 21:59 LGA → 23:29 PWM
    DL 5705 · Delta, flown by Republic · 1h 31m · 71% on time, 18.2% cancelled

Total trip 4h 55m, scheduled departure to arrival (Portland is 1 h ahead of Chicago). Times are local. Both flew on 55 of the last 56 days.

Makes the connection50%The first flight arrived more than 14 minutes late on 50% of the days it flew: too late for the 45-minute minimum connection on a 59m layover.
Arrives on time25%First flight not cancelled (14.5% are) × connection made (50%) × second flight not cancelled (18.2% are) and within 15 minutes (71%).
Total trip4h 55mORD 17:35 to PWM 23:29, 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.