Flight Reliability
AS 749 · Alaska Airlines
Las Vegas → Seattle (LAS–SEA)85% of its flights flew this route. The rest (MCI–PDX, SAN–PDX) are included in these numbers.
- 82%
- Arrive within 15 minutes
- 2 min early
- Average arrival delay
- 1.7%
- Cancelled
- 10 min early
- Median arrival delay
Based on 180 historical flights. Data through May 2026.
What the data says
The 3–6 PM departure wins.
AS 749 departing between 3–6 PM arrived on time 96% of the time, versus 78% between 9 PM–12 AM.
Friday is doing you no favors.
AS 749 arrived on time 100% of the time on Tuesdays and just 77% on Fridays. That gap is worth planning around.
Ticking up lately.
AS 749 arrived on time 82% of the time over the last three months in the data, compared with 77% in the three months before that.
The breakdown
- Mon78%(32 flights)
- Tue100%(17 flights)
- Wed93%(14 flights)
- Thu82%(33 flights)
- Fri77%(35 flights)
- Sat85%(13 flights)
- Sun78%(32 flights)
- 12–3 PM89%(18 flights)
- 3–6 PM96%(24 flights)
- 6–9 PM80%(94 flights)
- 9 PM–12 AM78%(40 flights)
Jun 92% → May 89% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 92% | 12 |
| July 2025 | 75% | 16 |
| August 2025 | 78% | 23 |
| September 2025 | 87% | 30 |
| December 2025 | 67% | 15 |
| January 2026 | 73% | 22 |
| April 2026 | 85% | 13 |
| May 2026 | 89% | 18 |
- Departures on time
- 77%
- Diverted
- 0.6%
- Flights flown
- 176
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 180 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.