Flight Reliability
DL 515 · Delta Air Lines
Los Angeles → Atlanta (LAX–ATL)
84
Pretty Reliable
WanderNerd Reliability Score
- 83%
- Arrive within 15 minutes
- 10 min
- Average arrival delay
- 1.4%
- Cancelled
- 3 min early
- Median arrival delay
Based on 365 historical flights. Data through May 2026.
What the data says
Saturdays have been rough.
DL 515 arrived on time 92% of the time on Fridays and just 69% on Saturdays. That gap is worth planning around.
A bit ahead of the LAX–ATL route.
DL 515 arrived on time 83% of the time, versus 77% across the LAX–ATL route.
Trending in the right direction.
DL 515 arrived on time 81% of the time over the last three months in the data, compared with 69% in the three months before that.
The breakdown
- Mon88%(51 flights)
- Tue84%(50 flights)
- Wed86%(51 flights)
- Thu87%(52 flights)
- Fri92%(52 flights)
- Sat69%(51 flights)
- Sun73%(52 flights)
87%
May
Jun 83% → May 87% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 83% | 30 |
| July 2025 | 90% | 31 |
| August 2025 | 93% | 30 |
| September 2025 | 93% | 30 |
| October 2025 | 90% | 31 |
| November 2025 | 93% | 28 |
| December 2025 | 80% | 30 |
| January 2026 | 61% | 31 |
| February 2026 | 64% | 28 |
| March 2026 | 76% | 29 |
| April 2026 | 80% | 30 |
| May 2026 | 87% | 31 |
- Departures on time
- 87%
- Diverted
- 0.3%
- Flights flown
- 359
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 365 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.