Flight DL820
Delta Air Lines flight DL820
Looking for DL820 in the air…
Washington (DCA) to Salt Lake City (SLC)
Historically, this flight arrives 15+ minutes late 27% of the time, and when it is late the delay averages 69 minutes. It was cancelled 1.1% of the time.
- On-time arrivals
- 72.8%
- Less than 15 minutes late
- Cancelled
- 1.1%
- 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
- Late-arriving aircraft 35%
- Air traffic control & airport 35%
- Airline (crew, maintenance, cleaning) 28%
- Extreme weather 2%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Salt Lake City (SLC) to Washington (DCA)
Historically, this flight arrives 15+ minutes late 16% of the time, and when it is late the delay averages 45 minutes. It was cancelled 0.8% of the time.
- On-time arrivals
- 83.9%
- Less than 15 minutes late
- Cancelled
- 0.8%
- Of scheduled flights
- Average delay when late
- 45 min
- Flights arriving 15+ minutes late
- Flights tracked
- 364
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 50%
- Airline (crew, maintenance, cleaning) 37%
- Late-arriving aircraft 12%
- Extreme weather 1%
- 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 | 81.4% | 60 |
| October 2025 | 82.3% | 62 |
| November 2025 | 88.3% | 60 |
| December 2025 | 87.1% | 62 |
| January 2026 | 63.3% | 62 |
| February 2026 | 80.8% | 56 |
| March 2026 | 75.8% | 62 |
| April 2026 | 78.3% | 60 |
| May 2026 | 85.5% | 62 |
| June 2026 | 71.2% | 60 |
| July 2026 | 77.2% | 60 |
| August 2026 | 67.8% | 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