Flight profile · Delta Air Lines
DL2666
Salt Lake City (SLC) to St. Louis (STL) · scheduled 5:45 PM – 12:38 AM
How DL2666 performs
718 operations, 2024-06-07 to 2026-06-30.
DL2666 arrived on time 79.5% of the time, against 84.2% for all SLC → STL flights — this specific departure is 4.6 percentage points worse than the route as a whole. Against Delta Air Lines’s own flights on this route it is 4.6 points worse.
Source: US DOT Bureau of Transportation Statistics · 718 operations between 2024-06-07 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| DL2666 | 79.5% | 0.42% | -7 min | 7.2% | 718 |
| Delta Air Lines on SLC → STL | 84.1% | 0.42% | -9 min | 5.4% | 2,881 |
| All SLC → STL flights | 84.2% | 0.41% | -9 min | 5.3% | 2,923 |
Source: FlyerIntel analysis of US DOT BTS data · 2024-06-07 to 2026-06-30
Other routes DL2666 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 |
|---|---|---|---|
| SLC→SAN Salt Lake City to San Diego | 2023-07-01 – 2024-06-06 | 115 | 82.6% |
| ATL→TUL Atlanta to Tulsa | 2024-04-22 – 2024-05-06 | 15 | — |
| MCO→CVG Orlando to Cincinnati / Covington | 2024-03-10 – 2024-04-08 | 30 | — |
| DTW→LGA Detroit to New York | 2024-01-13 – 2024-03-09 | 9 | — |
| FLL→LGA Fort Lauderdale to New York | 2024-01-08 – 2024-03-08 | 50 | — |
| SAN→SLC San Diego to Salt Lake City | 2023-07-01 – 2023-07-09 | 3 | — |
Because the same number has served different journeys, the statistics above describe only the route DL2666 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 718 records of DL2666 operating SLC → STL, 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.