BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
AUS→SEA

Austin, TX (AUS) to Seattle, WA (SEA) flight delay odds

81.8% of 2,058 official scheduled AUS-to-SEA flights arrived on time; 10.3% arrived at least 30 minutes late and 1.1% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALLower disruption
81.8%arrived on time
10.3%30+ min late
1.1%cancelled
2,058scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late5.5%all scheduled flights
120+ minutes late2.5%all scheduled flights
Diverted0.2%did not reach as scheduled
Average arrival+2.4 mincompleted flights

Which departure time was most reliable for AUS to SEA?

Among qualifying AUS-to-SEA departure window results, Late morning had the highest on-time rate: 89.6% of 164 flights. Evening was lowest at 72.7% across 571 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning68987.1%6.5%1.0%
Late morning16489.6%3.7%0.6%
Afternoon63482.2%10.4%1.4%
Evening57172.7%16.8%0.9%

Which weekday was most reliable for AUS to SEA?

Among qualifying AUS-to-SEA weekday results, Wednesday had the highest on-time rate: 84.8% of 297 flights. Sunday was lowest at 77.8% across 306 flights.

DayFlightsOn time30+ minCancelled
Monday30682.4%10.5%1.3%
Tuesday29883.2%9.1%0.3%
Wednesday29784.8%7.1%0.0%
Thursday30179.1%11.0%0.3%
Friday29582.0%11.5%2.0%
Saturday25583.5%9.8%1.6%
Sunday30677.8%13.4%2.0%

Which airline was most reliable for AUS to SEA?

Among qualifying AUS-to-SEA airline results, Delta Air Lines had the highest on-time rate: 83.9% of 935 flights. Alaska Airlines was lowest at 81.0% across 1,096 flights.

AirlineFlightsOn time30+ minCancelled
Alaska Airlines1,09681.0%10.2%1.0%
Delta Air Lines93583.9%9.8%1.1%
Southwest Airlines2740.7%33.3%3.7%

Which month was most reliable for AUS to SEA?

Among qualifying AUS-to-SEA month results, April 2026 had the highest on-time rate: 91.8% of 170 flights. December 2025 was lowest at 69.8% across 169 flights.

MonthFlightsOn time30+ minCancelled
July 202520879.8%14.4%1.4%
August 202519581.5%10.8%0.5%
September 202516786.2%6.0%0.0%
October 202517382.1%9.8%2.3%
November 202517284.3%10.5%1.2%
December 202516969.8%17.8%0.6%
January 202611681.0%11.2%3.4%
February 202612489.5%5.6%0.0%
March 202617276.2%9.9%2.3%
April 202617091.8%3.5%0.0%
May 202618584.9%10.3%0.5%
June 202620777.3%12.1%1.0%

What drove AUS to SEA delay minutes?

Airline was the largest recorded AUS-to-SEA delay category, accounting for 38.9% of 24,221 BTS-attributed delay minutes during July 2025–June 2026.

Airline38.9%
Late aircraft37.9%
National airspace17.2%
Weather4.8%
Security1.2%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.