Flight Reliability
AS 728 · Alaska Airlines
Portland → Las Vegas (PDX–LAS)90% of its flights flew this route. The rest (SEA–ONT) are included in these numbers.
- 81%
- Arrive within 15 minutes
- 3 min
- Average arrival delay
- 0.5%
- Cancelled
- 4 min early
- Median arrival delay
Based on 210 historical flights. Data through May 2026.
What the data says
Morning flights do better here.
AS 728 departing between 9 AM–12 PM arrived on time 95% of the time, versus 79% between 9 PM–12 AM.
Mondays have been rough.
AS 728 arrived on time 92% of the time on Wednesdays and just 76% on Mondays. That gap is worth planning around.
Trending in the right direction.
AS 728 arrived on time 82% of the time over the last three months in the data, compared with 64% in the three months before that.
The breakdown
- Mon76%(42 flights)
- Tue88%(16 flights)
- Wed92%(12 flights)
- Thu83%(36 flights)
- Fri83%(41 flights)
- Sat78%(23 flights)
- Sun77%(39 flights)
- 9 AM–12 PM95%(21 flights)
- 9 PM–12 AM79%(188 flights)
Jun 96% → May 92% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 96% | 25 |
| July 2025 | 72% | 29 |
| August 2025 | 85% | 26 |
| September 2025 | 94% | 17 |
| October 2025 | 92% | 12 |
| November 2025 | 78% | 18 |
| December 2025 | 46% | 11 |
| February 2026 | 70% | 10 |
| March 2026 | 70% | 20 |
| April 2026 | 83% | 24 |
| May 2026 | 92% | 12 |
- Departures on time
- 78%
- Diverted
- 0%
- Flights flown
- 209
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 210 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.