Flight Reliability
AS 534 · Alaska Airlines
San Francisco → Austin (SFO–AUS)81% of its flights flew this route. The rest (PDX–LAS, DFW–SEA) are included in these numbers.
- 73%
- Arrive within 15 minutes
- 7 min
- Average arrival delay
- 1.4%
- Cancelled
- 1 min early
- Median arrival delay
Based on 220 historical flights. Data through May 2026.
What the data says
The 3–6 PM departure wins.
AS 534 departing between 3–6 PM arrived on time 88% of the time, versus 64% between 12–3 PM.
Sunday scaries are real for this one.
AS 534 arrived on time 82% of the time on Fridays and just 58% on Sundays. That gap is worth planning around.
A bit behind the SFO–AUS route.
AS 534 arrived on time 73% of the time, versus 77% across the SFO–AUS route.
Lagging the Alaska Airlines network.
AS 534 arrived on time 73% of the time, versus 80% across the Alaska Airlines network.
The breakdown
- Mon81%(36 flights)
- Tue77%(26 flights)
- Wed70%(23 flights)
- Thu69%(35 flights)
- Fri82%(33 flights)
- Sat76%(25 flights)
- Sun58%(38 flights)
- 6–9 AM67%(18 flights)
- 12–3 PM64%(67 flights)
- 3–6 PM88%(58 flights)
- 6–9 PM70%(73 flights)
Jun 64% → May 73% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 64% | 28 |
| July 2025 | 59% | 29 |
| August 2025 | 68% | 25 |
| September 2025 | 88% | 17 |
| October 2025 | 74% | 19 |
| November 2025 | 88% | 25 |
| December 2025 | 82% | 27 |
| May 2026 | 73% | 30 |
- Departures on time
- 78%
- Diverted
- 0.5%
- Flights flown
- 216
- Months covered
- 11
Same route, other flights
Keep nerding
Based on 220 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.