Flight DL809
Delta Air Lines flight DL809
Looking for DL809 in the air…
Atlanta (ATL) to San Jose (SJC)
Historically, this flight arrives 15+ minutes late 10% of the time, and when it is late the delay averages 59 minutes. It was cancelled 1.1% of the time.
- On-time arrivals
- 90.0%
- Less than 15 minutes late
- Cancelled
- 1.1%
- Of scheduled flights
- Average delay when late
- 59 min
- Flights arriving 15+ minutes late
- Flights tracked
- 365
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 51%
- Air traffic control & airport 29%
- Late-arriving aircraft 16%
- Extreme weather 4%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
San Jose (SJC) to Atlanta (ATL)
Historically, this flight arrives 15+ minutes late 9% of the time, and when it is late the delay averages 69 minutes. It was cancelled 0.8% of the time.
- On-time arrivals
- 90.8%
- Less than 15 minutes late
- Cancelled
- 0.8%
- Of scheduled flights
- Average delay when late
- 69 min
- Flights arriving 15+ minutes late
- Flights tracked
- 364
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 40%
- Airline (crew, maintenance, cleaning) 34%
- Late-arriving aircraft 27%
- 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 | 93.3% | 60 |
| October 2025 | 93.5% | 62 |
| November 2025 | 89.5% | 59 |
| December 2025 | 91.7% | 62 |
| January 2026 | 88.5% | 62 |
| February 2026 | 91.1% | 56 |
| March 2026 | 91.8% | 62 |
| April 2026 | 91.4% | 60 |
| May 2026 | 88.5% | 62 |
| June 2026 | 91.7% | 60 |
| July 2026 | 82.3% | 62 |
| August 2026 | 91.9% | 62 |
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