Flight Reliability
AS 502 · Alaska Airlines
Seattle → Austin (SEA–AUS)95% of its flights flew this route. The rest (AUS–SEA) are included in these numbers.
82
Pretty Reliable
WanderNerd Reliability Score
- 82%
- Arrive within 15 minutes
- 3 min
- Average arrival delay
- 1.6%
- Cancelled
- 4 min early
- Median arrival delay
Based on 384 historical flights. Data through May 2026.
What the data says
The 6–9 AM departure wins.
AS 502 departing between 6–9 AM arrived on time 93% of the time, versus 78% between 9 AM–12 PM.
Friday is doing you no favors.
AS 502 arrived on time 89% of the time on Thursdays. On Fridays: 76%.
Trending in the right direction.
AS 502 arrived on time 95% of the time over the last three months in the data, compared with 78% in the three months before that.
The breakdown
- Mon81%(53 flights)
- Tue87%(54 flights)
- Wed78%(55 flights)
- Thu89%(55 flights)
- Fri76%(53 flights)
- Sat81%(52 flights)
- Sun80%(55 flights)
- 6–9 AM93%(86 flights)
- 9 AM–12 PM78%(272 flights)
- 3–6 PM90%(19 flights)
88%
May
Jun 59% → May 88% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 59% | 29 |
| July 2025 | 70% | 30 |
| August 2025 | 77% | 31 |
| September 2025 | 90% | 30 |
| October 2025 | 86% | 29 |
| November 2025 | 77% | 30 |
| December 2025 | 68% | 31 |
| January 2026 | 77% | 30 |
| February 2026 | 89% | 28 |
| March 2026 | 97% | 29 |
| April 2026 | 100% | 30 |
| May 2026 | 88% | 50 |
- Departures on time
- 78%
- Diverted
- 0.3%
- Flights flown
- 377
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 384 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.