Flight Reliability
DL 1179 · Delta Air Lines
San Diego → Atlanta (SAN–ATL)87% of its flights flew this route. The rest (IAH–ATL, LGA–BOS) are included in these numbers.
84
Pretty Reliable
WanderNerd Reliability Score
- 86%
- Arrive within 15 minutes
- 4 min
- Average arrival delay
- 1.7%
- Cancelled
- 7 min early
- Median arrival delay
Based on 292 historical flights. Data through May 2026.
What the data says
Morning-you made the right choice.
DL 1179 departing between 6–9 AM arrived on time 87% of the time, versus 78% between 6–9 PM.
Sunday scaries are real for this one.
DL 1179 arrived on time 93% of the time on Fridays. On Sundays: 82%.
A bit ahead of the Delta Air Lines network.
DL 1179 arrived on time 86% of the time, versus 81% across the Delta Air Lines network.
The breakdown
- Mon84%(43 flights)
- Tue89%(36 flights)
- Wed86%(36 flights)
- Thu84%(45 flights)
- Fri93%(44 flights)
- Sat86%(36 flights)
- Sun82%(44 flights)
- 6–9 AM87%(247 flights)
- 6–9 PM78%(37 flights)
87%
May
Jun 80% → May 87% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 80% | 25 |
| July 2025 | 93% | 30 |
| August 2025 | 89% | 18 |
| September 2025 | 92% | 12 |
| October 2025 | 71% | 17 |
| November 2025 | 90% | 20 |
| December 2025 | 77% | 13 |
| January 2026 | 87% | 30 |
| February 2026 | 93% | 28 |
| March 2026 | 74% | 31 |
| April 2026 | 97% | 30 |
| May 2026 | 87% | 30 |
- Departures on time
- 90%
- Diverted
- 1.0%
- Flights flown
- 284
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 292 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.