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

Chicago → Portland via New York: arrives on time 39%

  1. 18:00 ORD → 21:40 JFK
    DL 4783 · Delta, flown by Endeavor · 2h 40m · 49% on time, 23.6% cancelled
  2. 1h 19m layover in New York (JFK) · 45 min minimum on one ticket
  3. 22:59 JFK → 00:52 PWM +1 day
    DL 5411 · Delta, flown by Endeavor · 1h 53m · 81% on time, 8.4% cancelled

Total trip 5h 52m, 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 connection69%The first flight arrived more than 34 minutes late on 31% of the days it flew: too late for the 45-minute minimum connection on a 1h 19m layover.
Arrives on time39%First flight not cancelled (23.6% are) × connection made (69%) × second flight not cancelled (8.4% are) and within 15 minutes (81%).
Total trip5h 52mORD 18:00 to PWM 00:52, 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.