Historical on-time performance
Seattle to Austin
1,770 miData through May 2026Source: US DOT · BTS
Flights on SEA–AUS arrive on time 77% of the time over the last 12 months.
On-time rate77%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled0.9%of scheduled flights
based on 2,055 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Delta Air LinesbestOn-time80%Medianon timep9035 minCancel1.2%Flights930
- Alaska AirlinesOn-time75%Medianon timep9035 minCancel0.7%Flights1,125
Why flights run late
Delay causes
- Airline48%
- Weather2%
- Air traffic (NAS)23%
- Late aircraft26%
- Security0%
Most delay minutes here are attributed to Airline.
When flights don't go
Why flights were cancelled
- Airline68%
- Weather32%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Airline. Shares are among 19 cancellations with a reported cause (BTS reports causes from June 2003).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly SEA → AUS
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 71% to 83% on time.
- Mornings83% on time · p90 20 min · 2,097 flights
- Early mornings79% on time · p90 30 min · 175 flights · limited
- Overnights77% on time · p90 30 min · 399 flights
- Middays74% on time · p90 45 min · 1,882 flights
- Evenings71% on time · p90 45 min · 1,577 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 72% to 84% on time.
- Tuesdays84% on time · p90 25 min · 875 flights
- Wednesdays82% on time · p90 30 min · 880 flights
- Saturdays75% on time · p90 30 min · 788 flights
- Sundays75% on time · p90 40 min · 897 flights
- Thursdays75% on time · p90 40 min · 899 flights
- Fridays74% on time · p90 45 min · 900 flights
- Mondays72% on time · p90 45 min · 908 flights
Keep exploring