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

Seattle → Detroit via Atlanta: arrives on time 50%

11:56 SEA → 19:54 ATL

DL 554 · Delta · 4h 58m · 78% on time, 0.0% cancelled
57m layover in Atlanta (ATL) · 45 min minimum on one ticket
20:51 ATL → 22:54 DTW

DL 1232 · Delta · 2h 03m · 68% on time, 0.7% cancelled

Total trip 7h 58m, scheduled departure to arrival (Detroit is 3 h ahead of Seattle). Times are local. Both flew on 56 of the last 56 days.

Makes the connection75%The first flight arrived more than 12 minutes late on 25% of the days it flew: too late for the 45-minute minimum connection on a 57m layover.

Arrives on time50%First flight not cancelled (0.0% are) × connection made (75%) × second flight not cancelled (0.7% are) and within 15 minutes (68%).

Total trip7h 58mSEA 11:56 to DTW 22:54, 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.