Flight Reliability
DL 3521 · Delta Air Lines
Los Angeles → Albuquerque (LAX–ABQ)96% of its flights flew this route. The rest (SNA–SEA, CLE–MSP) are included in these numbers.
100
Nerd Approved
WanderNerd Reliability Score
- 94%
- Arrive within 15 minutes
- 7 min early
- Average arrival delay
- 0%
- Cancelled
- 11 min early
- Median arrival delay
Based on 204 historical flights. Data through May 2026.
What the data says
Mornings have a slight edge.
Departures between 9 AM–12 PM arrived on time 97% of the time, against 93% between 6–9 AM.
Thursday is the weak spot.
DL 3521 arrived on time 100% of the time on Fridays. On Thursdays: 90%.
Better than the LAX–ABQ route average.
DL 3521 arrived on time 94% of the time, versus 86% across the LAX–ABQ route.
Better than the Delta Air Lines network average.
DL 3521 arrived on time 94% of the time, versus 81% across the Delta Air Lines network.
The breakdown
- Mon93%(29 flights)
- Tue90%(29 flights)
- Wed93%(29 flights)
- Thu90%(29 flights)
- Fri100%(29 flights)
- Sat97%(30 flights)
- Sun97%(29 flights)
- 6–9 AM93%(167 flights)
- 9 AM–12 PM97%(35 flights)
- 3–6 PM—(2 flights)
90%
Dec
Jun 90% → Dec 90% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 90% | 30 |
| July 2025 | 97% | 31 |
| August 2025 | 97% | 31 |
| September 2025 | 93% | 30 |
| October 2025 | 97% | 31 |
| November 2025 | 93% | 30 |
| December 2025 | 90% | 19 |
- Departures on time
- 94%
- Diverted
- 0%
- Flights flown
- 204
- Months covered
- 9
Same route, other flights
Keep nerding
Based on 204 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.