AUS to SEA flight delays & on-time performance
Nonstop flights from Austin Bergstrom International Airport to Seattle–Tacoma International Airport · 1,770 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at AUS or SEA right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Austin (AUS) to Seattle (SEA) arrived on time 82% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 0.9% were cancelled, and 5% arrived an hour or more late.
- Delta Air Lines was the most punctual airline here (85% on time); Alaska Airlines was the least (82%).
- Departures scheduled around 6am did best (92% on time); around 6pm did worst (73%).
- Saturday was the most reliable day to fly (86% on time) and Thursday the least (78%).
- The largest source of delay minutes was late-arriving aircraft (40%).
Which airline is most on time from AUS to SEA?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| Delta Air Lines | 85% | 1.1% | 14 min | 6.2% | 943 |
| Alaska Airlines | 82% | 0.8% | 10 min | 4.4% | 1,066 |
| Southwest Airlines | 51% | 1.7% | 19 min | 7.0% | 58 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 6am92%346 flights
- 7am85%228 flights
- 8am83%115 flights
- 11am91%140 flights
- 12pm87%173 flights
- 1pm77%186 flights
- 2pm59%38 flights
- 3pm88%118 flights
- 4pm83%121 flights
- 5pm77%22 flights
- 6pm73%259 flights
- 7pm73%302 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday83%0.7% cancelled
- Tuesday85%0.0% cancelled
- Wednesday84%0.0% cancelled
- Thursday78%0.3% cancelled
- Friday81%2.0% cancelled
- Saturday86%1.5% cancelled
- Sunday80%2.0% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft40%
- Airline (crew, maintenance, cleaning, fueling)35%
- Air traffic control & airport congestion19%
- Extreme weather5%
- Security1%
Why flights are cancelled
Share of cancellations by reason.
- Airline (crew, maintenance, cleaning, fueling)68%
- Extreme weather32%
- Air traffic control & airport congestion0%
- Security0%
AUS to SEA: common questions
- How often are AUS to SEA flights on time?
- 82% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Austin to Seattle cancelled?
- 0.9% of scheduled flights were cancelled (19 of 2,067).
- How long are typical delays?
- Across all flights the average arrival delay was 12 min (early arrivals count as zero). Flights that were late arrived 63 min behind schedule on average, and 5.3% of flights were an hour or more late.
- How long is taxi time at AUS?
- Flights on this route spent 17 min taxiing from the gate to takeoff on average.
Related routes
Return trip: SEA to AUS — 79% on time
More flights from Austin
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: AUS → SEA, nonstop flights by US airlines that report to the DOT. How we calculate this.