Flight Reliability
AS 1429 · Alaska Airlines
San Diego → Denver (SAN–DEN)99% of its flights flew this route. The rest (SEA–SAT) are included in these numbers.
- 73%
- Arrive within 15 minutes
- 7 min
- Average arrival delay
- 1.3%
- Cancelled
- 6 min early
- Median arrival delay
Based on 159 historical flights. Data through May 2026.
What the data says
The 12–3 PM departure wins.
AS 1429 departing between 12–3 PM arrived on time 91% of the time, versus 60% between 3–6 PM.
Wednesdays have been rough.
AS 1429 arrived on time 89% of the time on Saturdays and just 63% on Wednesdays. That gap is worth planning around.
A bit behind the SAN–DEN route.
AS 1429 arrived on time 73% of the time, versus 79% across the SAN–DEN route.
Lagging the Alaska Airlines network.
AS 1429 arrived on time 73% of the time, versus 80% across the Alaska Airlines network.
The breakdown
- Mon77%(26 flights)
- Tue77%(22 flights)
- Wed63%(19 flights)
- Thu74%(23 flights)
- Fri65%(23 flights)
- Sat89%(18 flights)
- Sun69%(26 flights)
- 12–3 PM91%(66 flights)
- 3–6 PM60%(90 flights)
- 9 PM–12 AM—(1 flights)
Nov 69% → Apr 95% on time
| Month | On-time percentage | Flights |
|---|---|---|
| November 2025 | 69% | 29 |
| December 2025 | 41% | 29 |
| January 2026 | 75% | 20 |
| February 2026 | 78% | 23 |
| March 2026 | 96% | 28 |
| April 2026 | 95% | 21 |
- Departures on time
- 73%
- Diverted
- 0%
- Flights flown
- 157
- Months covered
- 8
Same route, other flights
Keep nerding
Based on 159 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.