Flight DL779
Delta Air Lines flight DL779
Looking for DL779 in the air…
Atlanta (ATL) to Ontario (ONT)
Historically, this flight arrives 15+ minutes late 30% of the time, and when it is late the delay averages 56 minutes. It was cancelled 1.6% of the time.
- On-time arrivals
- 69.8%
- Less than 15 minutes late
- Cancelled
- 1.6%
- Of scheduled flights
- Average delay when late
- 56 min
- Flights arriving 15+ minutes late
- Flights tracked
- 247
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 47%
- Late-arriving aircraft 31%
- Air traffic control & airport 16%
- Extreme weather 6%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Washington (DCA) to Seattle (SEA)
Historically, this flight arrives 15+ minutes late 35% of the time, and when it is late the delay averages 36 minutes. It was cancelled 4.2% of the time.
- On-time arrivals
- 65.2%
- Less than 15 minutes late
- Cancelled
- 4.2%
- Of scheduled flights
- Average delay when late
- 36 min
- Flights arriving 15+ minutes late
- Flights tracked
- 24
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 75%
- Airline (crew, maintenance, cleaning) 25%
- Late-arriving aircraft 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 | 82.4% | 17 |
| October 2025 | 82.6% | 23 |
| November 2025 | 72.0% | 26 |
| December 2025 | 53.6% | 28 |
| January 2026 | 67.9% | 29 |
| February 2026 | 70.4% | 28 |
| March 2026 | 71.4% | 7 |
| April 2026 | 88.9% | 18 |
| May 2026 | 83.3% | 31 |
| June 2026 | 52.6% | 20 |
| July 2026 | 53.8% | 27 |
| August 2026 | 58.8% | 17 |
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