Route Reliability
Seattle → Austin
SEA–AUS · 1,770 miles · Seattle–Tacoma International Airport to Austin–Bergstrom International Airport
- 79%
- Arrive within 15 minutes
- 6 min
- Average arrival delay
- 0.9%
- Cancelled
- 2,055
- Flights in the data
Data through May 2026.
Who flies it best
Ranked by on-time arrivals. Historical results, not predictions.
- 1.Delta Air Lines82%930 flights
- 2.Alaska Airlines77%1,125 flights
What the data says
Morning-you made the right choice.
SEA–AUS flights departing between 6–9 AM arrived on time 89% of the time, versus 63% between 9 PM–12 AM.
Friday is doing you no favors.
SEA–AUS flights arrived on time 88% of the time on Tuesdays. On Fridays: 74%.
Delta Air Lines has a slight edge here.
Delta Air Lines arrived on time 82% of the time on this route; Alaska Airlines managed 77%.
Ticking up lately.
SEA–AUS flights arrived on time 86% of the time over the last three months in the data, compared with 83% in the three months before that.
Best historical flights
Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.
Top flights by on-time rate
More flights on this route
The breakdown
- Mon77%(305 flights)
- Tue88%(292 flights)
- Wed80%(296 flights)
- Thu79%(299 flights)
- Fri74%(290 flights)
- Sat80%(245 flights)
- Sun75%(305 flights)
- 12–3 AM83%(30 flights)
- 6–9 AM89%(391 flights)
- 9 AM–12 PM80%(739 flights)
- 12–3 PM72%(206 flights)
- 3–6 PM73%(512 flights)
- 6–9 PM87%(75 flights)
- 9 PM–12 AM63%(79 flights)
Jun 65% → May 81% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 65% | 202 |
| July 2025 | 61% | 206 |
| August 2025 | 76% | 193 |
| September 2025 | 86% | 166 |
| October 2025 | 87% | 170 |
| November 2025 | 80% | 169 |
| December 2025 | 77% | 168 |
| January 2026 | 83% | 112 |
| February 2026 | 87% | 124 |
| March 2026 | 88% | 168 |
| April 2026 | 89% | 169 |
| May 2026 | 81% | 185 |
Keep nerding
Based on 2,055 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.