Flight Reliability
AS 1492 · Alaska Airlines
San Diego → Denver (SAN–DEN)99% of its flights flew this route. The rest (SEA–MSO) are included in these numbers.
90
Nerd Approved
WanderNerd Reliability Score
- 90%
- Arrive within 15 minutes
- 5 min early
- Average arrival delay
- 2.0%
- Cancelled
- 14 min early
- Median arrival delay
Based on 153 historical flights. Data through May 2026.
What the data says
Sunday scaries are real for this one.
AS 1492 arrived on time 100% of the time on Thursdays and just 73% on Sundays. That gap is worth planning around.
Better than the SAN–DEN route average.
AS 1492 arrived on time 90% of the time, versus 79% across the SAN–DEN route.
Better than the Alaska Airlines network average.
AS 1492 arrived on time 90% of the time, versus 80% across the Alaska Airlines network.
The breakdown
- Mon86%(22 flights)
- Tue96%(22 flights)
- Wed95%(20 flights)
- Thu100%(23 flights)
- Fri91%(21 flights)
- Sat90%(20 flights)
- Sun73%(22 flights)
- 6–9 AM90%(149 flights)
- 12–3 PM—(1 flights)
92%
May
Nov 80% → May 92% on time
| Month | On-time percentage | Flights |
|---|---|---|
| November 2025 | 80% | 20 |
| January 2026 | 96% | 25 |
| February 2026 | 100% | 28 |
| March 2026 | 80% | 30 |
| April 2026 | 97% | 30 |
| May 2026 | 92% | 12 |
- Departures on time
- 89%
- Diverted
- 0%
- Flights flown
- 150
- Months covered
- 7
Same route, other flights
Keep nerding
Based on 153 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.