Flight Reliability
DL 3743 · Delta Air Lines
San Diego → Los Angeles (SAN–LAX)
100
Nerd Approved
WanderNerd Reliability Score
- 95%
- Arrive within 15 minutes
- 7 min early
- Average arrival delay
- 0.6%
- Cancelled
- 10 min early
- Median arrival delay
Based on 363 historical flights. Data through May 2026.
What the data says
Tuesday comes out ahead.
A small edge: 98% on time on Tuesdays against 92% on Fridays.
A bit ahead of the SAN–LAX route.
DL 3743 arrived on time 95% of the time, versus 90% across the SAN–LAX route.
Better than the Delta Air Lines network average.
DL 3743 arrived on time 95% of the time, versus 81% across the Delta Air Lines network.
The breakdown
- Mon94%(52 flights)
- Tue98%(52 flights)
- Wed94%(52 flights)
- Thu96%(49 flights)
- Fri92%(51 flights)
- Sat94%(52 flights)
- Sun94%(53 flights)
87%
May
Jun 97% → May 87% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 97% | 30 |
| July 2025 | 97% | 31 |
| August 2025 | 100% | 31 |
| September 2025 | 100% | 29 |
| October 2025 | 94% | 31 |
| November 2025 | 93% | 30 |
| December 2025 | 93% | 29 |
| January 2026 | 93% | 30 |
| February 2026 | 89% | 28 |
| March 2026 | 94% | 31 |
| April 2026 | 100% | 30 |
| May 2026 | 87% | 31 |
- Departures on time
- 96%
- Diverted
- 0%
- Flights flown
- 361
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 363 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.