Flight DL1309
Delta Air Lines flight DL1309
Looking for DL1309 in the air…
Atlanta (ATL) to Dulles (IAD)
Historically, this flight arrives 15+ minutes late 27% of the time, and when it is late the delay averages 72 minutes. It was cancelled 2.1% of the time.
- On-time arrivals
- 72.6%
- Less than 15 minutes late
- Cancelled
- 2.1%
- Of scheduled flights
- Average delay when late
- 72 min
- Flights arriving 15+ minutes late
- Flights tracked
- 287
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 48%
- Air traffic control & airport 26%
- Late-arriving aircraft 24%
- Extreme weather 1%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Dulles (IAD) to Atlanta (ATL)
Historically, this flight arrives 15+ minutes late 12% of the time, and when it is late the delay averages 179 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 88.0%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 179 min
- Flights arriving 15+ minutes late
- Flights tracked
- 25
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 91%
- Late-arriving aircraft 7%
- Air traffic control & airport 1%
- 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 | 100.0% | 13 |
| October 2025 | 89.7% | 29 |
| November 2025 | 82.8% | 30 |
| December 2025 | 77.3% | 22 |
| January 2026 | 95.2% | 24 |
| February 2026 | 86.1% | 36 |
| March 2026 | 69.7% | 33 |
| April 2026 | 65.4% | 26 |
| May 2026 | 53.8% | 26 |
| June 2026 | 65.2% | 24 |
| July 2026 | 56.0% | 26 |
| August 2026 | 52.2% | 23 |
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