BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
AIRLINE × ROUTE REPORT
ORD→SEA

Delta Air Lines Chicago, IL (ORD) to Seattle, WA (SEA) reliability

Among 902 scheduled Delta Air Lines flights from ORD to SEA, 67.4% arrived on time, 17.7% arrived at least 30 minutes late, and 1.4% 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
67.4%arrived on time
17.7%30+ min late
1.4%cancelled
902scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
30+ minutes late17.7%
60+ minutes late7.6%
Cancelled1.4%
Average arrival+14.4 mincompleted flights

What did Delta Air Lines ORD to SEA record?

Delta Air Lines completed 98.0% of its scheduled reportable ORD to SEA flights in the observation window. 67.4% of all scheduled flights arrived less than 15 minutes late, while 7.6% arrived at least an hour late.

What were Delta Air Lines ORD to SEA disruption rates?

For Delta Air Lines ORD-to-SEA flights, 17.7% arrived at least 30 minutes late, 1.4% were cancelled, and 0.6% were diverted.

Compare all airlines on this route

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

The Delta Air Lines ORD-to-SEA cohort contained 902 scheduled flights; 884 completed, 13 were cancelled, and 5 were diverted.

Not a prediction.

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