Flight profile · Delta Air Lines
DL2021
Miami (MIA) to Salt Lake City (SLC) · scheduled 6:40 PM – 10:10 AM
How DL2021 performs
753 operations, 2024-06-07 to 2026-06-30.
DL2021 arrived on time 73.6% of the time, against 74.6% for all MIA → SLC flights — this specific departure is 1.1 percentage points worse than the route as a whole.
Source: US DOT Bureau of Transportation Statistics · 753 operations between 2024-06-07 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| DL2021 | 73.6% | 0.66% | -1 min | 8.6% | 753 |
| Delta Air Lines on MIA → SLC | 72.8% | 0.46% | -1 min | 9.2% | 1,095 |
| All MIA → SLC flights | 74.6% | 0.61% | -4 min | 8.5% | 1,963 |
Source: FlyerIntel analysis of US DOT BTS data · 2024-06-07 to 2026-06-30
Other routes DL2021 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 |
|---|---|---|---|
| LAS→LAX Las Vegas to Los Angeles | 2024-05-07 – 2024-06-06 | 31 | — |
| LAX→LAS Los Angeles to Las Vegas | 2024-05-07 – 2024-06-06 | 31 | — |
| CVG→MCO Cincinnati / Covington to Orlando | 2024-04-09 – 2024-05-06 | 28 | — |
| ATL→JFK Atlanta to New York | 2024-03-10 – 2024-04-08 | 30 | — |
| MCO→ATL Orlando to Atlanta | 2024-01-08 – 2024-03-09 | 59 | — |
| MSP→MEM Minneapolis to Memphis | 2023-12-24 – 2024-01-06 | 5 | — |
| DTW→PVD Detroit to Providence/Warwick | 2023-12-16 – 2023-12-21 | 6 | — |
| ATL→MEM Atlanta to Memphis | 2023-09-10 – 2023-12-15 | 86 | — |
| MEM→ATL Memphis to Atlanta | 2023-09-10 – 2023-12-15 | 84 | — |
| DTW→IAD Detroit to Washington | 2023-11-04 – 2023-11-04 | 1 | — |
| ATL→BUF Atlanta to Buffalo | 2023-07-10 – 2023-09-04 | 46 | — |
| BUF→ATL Buffalo to Atlanta | 2023-07-10 – 2023-09-04 | 46 | — |
| MSP→ORD Minneapolis to Chicago | 2023-07-02 – 2023-07-09 | 7 | — |
Because the same number has served different journeys, the statistics above describe only the route DL2021 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 753 records of DL2021 operating MIA → SLC, 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.