Flight DL819
Delta Air Lines flight DL819
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Alerts at this flight's airports
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Watch Ground Delay Program SAN
Ground Delay Program at San Diego International Airport (SAN): Average 37 minutes, up to 1 hour and 11 minutes
Reason: airport volume
Airport status
San Diego (SAN) to Atlanta (ATL)
Historically, this flight arrives 15+ minutes late 6% of the time, and when it is late the delay averages 149 minutes. It was cancelled 1.4% of the time.
- On-time arrivals
- 94.1%
- Less than 15 minutes late
- Cancelled
- 1.4%
- Of scheduled flights
- Average delay when late
- 149 min
- Flights arriving 15+ minutes late
- Flights tracked
- 207
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 81%
- Air traffic control & airport 15%
- Late-arriving aircraft 4%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Atlanta (ATL) to San Diego (SAN)
Historically, this flight arrives 15+ minutes late 34% of the time, and when it is late the delay averages 48 minutes. It was cancelled 0.7% of the time.
- On-time arrivals
- 66.4%
- Less than 15 minutes late
- Cancelled
- 0.7%
- Of scheduled flights
- Average delay when late
- 48 min
- Flights arriving 15+ minutes late
- Flights tracked
- 142
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 47%
- Airline (crew, maintenance, cleaning) 28%
- Late-arriving aircraft 22%
- Extreme weather 2%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Gainesville (GNV) to Atlanta (ATL)
Only 9 flights on record, which is too few for reliable odds.
- On-time arrivals
- 55.6%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 43 min
- Flights arriving 15+ minutes late
- Flights tracked
- 9
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 68%
- Late-arriving aircraft 32%
- Air traffic control & airport 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
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Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 79.5% | 40 |
| October 2025 | 73.3% | 31 |
| November 2025 | 80.4% | 52 |
| December 2025 | 80.8% | 27 |
| January 2026 | 88.9% | 29 |
| February 2026 | 92.9% | 28 |
| March 2026 | 83.3% | 7 |
| April 2026 | 100.0% | 18 |
| May 2026 | 96.8% | 31 |
| June 2026 | 93.1% | 30 |
| July 2026 | 80.0% | 46 |
| August 2026 | 31.6% | 19 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data