Delta Air Lines New York, NY (JFK) to Seattle, WA (SEA) reliability

Among 1,338 scheduled Delta Air Lines flights from JFK to SEA, 71.1% arrived on time, 15.3% arrived at least 30 minutes late, and 2.3% 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 SIGNALGenerally reliable

71.1%arrived on time

15.3%30+ min late

2.3%cancelled

1,338scheduled flights

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

30+ minutes late15.3%

60+ minutes late6.9%

Cancelled2.3%

Average arrival+5.8 mincompleted flights

What did Delta Air Lines JFK to SEA record?

Delta Air Lines completed 97.1% of its scheduled reportable JFK to SEA flights in the observation window. 71.1% of all scheduled flights arrived less than 15 minutes late, while 6.9% arrived at least an hour late.

What were Delta Air Lines JFK to SEA disruption rates?

For Delta Air Lines JFK-to-SEA flights, 15.3% arrived at least 30 minutes late, 2.3% were cancelled, and 0.6% were diverted.

Compare all airlines on this route

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

The Delta Air Lines JFK-to-SEA cohort contained 1,338 scheduled flights; 1,299 completed, 31 were cancelled, and 8 were diverted.

Not a prediction.

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