Flight profile · Delta Air Lines
DL820
Salt Lake City (SLC) to Washington (DCA) · scheduled 9:55 AM – 4:00 PM
How DL820 performs
754 operations, 2024-06-07 to 2026-06-30.
DL820 arrived on time 83.5% of the time, against 85.2% for all SLC → DCA flights — this specific departure is 1.7 percentage points worse than the route as a whole. Against Delta Air Lines’s own flights on this route it is 1.7 points worse.
Source: US DOT Bureau of Transportation Statistics · 754 operations between 2024-06-07 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| DL820 | 83.5% | 1.19% | -6 min | 3.1% | 754 |
| Delta Air Lines on SLC → DCA | 85.2% | 0.82% | -8 min | 3.0% | 1,096 |
| All SLC → DCA flights | 85.2% | 0.82% | -8 min | 3.0% | 1,096 |
Source: FlyerIntel analysis of US DOT BTS data · 2024-06-07 to 2026-06-30
Other routes DL820 has flown
A flight number is a slot in a schedule, and carriers reassign it. These are the other city pairs this number served in the analysis period.
| Route | Operated | Flights | On time |
|---|---|---|---|
| DCA→SLC Washington to Salt Lake City | 2024-06-07 – 2026-06-30 | 753 | 76.8% |
| SFO→JFK San Francisco to New York | 2024-06-06 – 2024-06-06 | 1 | — |
| LGA→MCO New York to Orlando | 2023-09-06 – 2024-06-01 | 33 | — |
| MSP→ATL Minneapolis to Atlanta | 2024-04-11 – 2024-05-06 | 16 | — |
| ATL→BZN Atlanta to Bozeman | 2024-03-10 – 2024-04-08 | 30 | — |
| BZN→ATL Bozeman to Atlanta | 2024-03-10 – 2024-04-08 | 30 | — |
| SAN→SLC San Diego to Salt Lake City | 2024-01-08 – 2024-03-09 | 62 | — |
| MCO→LGA Orlando to New York | 2023-09-05 – 2024-01-07 | 84 | — |
| MSP→SEA Minneapolis to Seattle | 2023-11-05 – 2023-12-15 | 38 | — |
| ATL→SAV Atlanta to Savannah | 2023-12-04 – 2023-12-04 | 1 | — |
| ATL→SRQ Atlanta to Sarasota/Bradenton | 2023-07-09 – 2023-07-31 | 23 | — |
| SRQ→ATL Sarasota/Bradenton to Atlanta | 2023-07-09 – 2023-07-31 | 23 | — |
| BOS→CVG Boston to Cincinnati / Covington | 2023-07-01 – 2023-07-08 | 6 | — |
| CVG→BOS Cincinnati / Covington to Boston | 2023-07-01 – 2023-07-08 | 6 | — |
| LAS→LAX Las Vegas to Los Angeles | 2023-07-05 – 2023-07-05 | 1 | — |
| LAX→LAS Los Angeles to Las Vegas | 2023-07-05 – 2023-07-05 | 1 | — |
Because the same number has served different journeys, the statistics above describe only the route DL820 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 754 records of DL820 operating SLC → DCA, published by the US DOT Bureau of Transportation Statistics. A flight counts as delayed when it arrives 15 or more minutes after schedule. Cancelled and diverted flights are excluded from the on-time rate and reported separately. Flight numbers are resolved as carrier plus number plus route, because the same number serves different routes over time.