Delta Air Lines Seattle, WA (SEA) to Atlanta, GA (ATL) reliability

Among 2,371 scheduled Delta Air Lines flights from SEA to ATL, 83.0% arrived on time, 10.1% arrived at least 30 minutes late, and 0.5% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Marketing carrier: Delta Air Lines (DL) · Updated September 16, 2026

HISTORICAL ROUTE SIGNALLower disruption

83.0%arrived on time

10.1%30+ min late

0.5%cancelled

2,371scheduled flights

Based on July 2025–June 2026; on time means arrival less than 15 minutes late.

30+ minutes late10.1%

60+ minutes late4.9%

Cancelled0.5%

Average arrival+4.8 mincompleted flights

What did Delta Air Lines SEA to ATL record?

Delta Air Lines completed 99.2% of its scheduled reportable SEA to ATL flights in the observation window. 83.0% of all scheduled flights arrived less than 15 minutes late, while 4.9% arrived at least an hour late.

What were Delta Air Lines SEA to ATL disruption rates?

For Delta Air Lines SEA-to-ATL flights, 10.1% arrived at least 30 minutes late, 0.5% were cancelled, and 0.3% were diverted.

Compare all airlines on this route

What was the Delta Air Lines SEA to ATL scheduled cohort?

The Delta Air Lines SEA-to-ATL cohort contained 2,371 scheduled flights; 2,351 completed, 12 were cancelled, and 8 were diverted.

Not a prediction.

This is a descriptive historical rate. Schedule changes, seasonal operations and current conditions may differ.