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

Atlanta → Seattle via Chicago: arrives on time 26%

  1. 15:50 ATL → 17:04 ORD
    DL 2738 · Delta · 2h 16m · 62% on time, 3.3% cancelled
  2. 51m layover in Chicago (ORD) · 45 min minimum on one ticket
  3. 17:55 ORD → 20:34 SEA
    DL 637 · Delta · 4h 39m · 60% on time, 2.0% cancelled

Total trip 7h 44m, scheduled departure to arrival (Seattle is 3 h behind Atlanta). Times are local. Both flew on 47 of the last 56 days.

Makes the connection45%The first flight arrived more than 6 minutes late on 55% of the days it flew: too late for the 45-minute minimum connection on a 51m layover.
Arrives on time26%First flight not cancelled (3.3% are) × connection made (45%) × second flight not cancelled (2.0% are) and within 15 minutes (60%).
Total trip7h 44mATL 15:50 to SEA 20:34, 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.