BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
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AIRLINE × ROUTE REPORT
DCA→SEA

Delta Air Lines Washington, DC (DCA) to Seattle, WA (SEA) reliability

Among 365 scheduled Delta Air Lines flights from DCA to SEA, 64.1% arrived on time, 22.7% arrived at least 30 minutes late, and 3.0% 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 SIGNALVariable
64.1%arrived on time
22.7%30+ min late
3.0%cancelled
365scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
30+ minutes late22.7%
60+ minutes late13.7%
Cancelled3.0%
Average arrival+23.1 mincompleted flights

What did Delta Air Lines DCA to SEA record?

Delta Air Lines completed 97.0% of its scheduled reportable DCA to SEA flights in the observation window. 64.1% of all scheduled flights arrived less than 15 minutes late, while 13.7% arrived at least an hour late.

What were Delta Air Lines DCA to SEA disruption rates?

For Delta Air Lines DCA-to-SEA flights, 22.7% arrived at least 30 minutes late, 3.0% were cancelled, and 0.0% were diverted.

Compare all airlines on this route

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

The Delta Air Lines DCA-to-SEA cohort contained 365 scheduled flights; 354 completed, 11 were cancelled, and 0 were diverted.

Not a prediction.

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