Flight profile · Delta Air Lines
DL491
Bozeman (BZN) to Salt Lake City (SLC) · scheduled 5:40 AM – 7:28 AM
How DL491 performs
536 operations, 2024-06-07 to 2026-06-30.
DL491 arrived on time 90.4% of the time, against 88.9% for all BZN → SLC flights — this specific departure is 1.5 percentage points better than the route as a whole. Against Delta Air Lines’s own flights on this route it is 1.1 points better.
Source: US DOT Bureau of Transportation Statistics · 536 operations between 2024-06-07 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| DL491 | 90.4% | 0.56% | -13 min | 3.6% | 536 |
| Delta Air Lines on BZN → SLC | 89.3% | 0.57% | -12 min | 4.4% | 1,916 |
| All BZN → SLC flights | 88.9% | 0.52% | -10 min | 4.2% | 3,456 |
Source: FlyerIntel analysis of US DOT BTS data · 2024-06-07 to 2026-06-30
Other routes DL491 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 |
|---|---|---|---|
| ATL→MIA Atlanta to Miami | 2025-12-19 – 2025-12-19 | 1 | — |
| JFK→SEA New York to Seattle | 2023-07-01 – 2025-12-18 | 412 | 86.7% |
| JFK→SFO New York to San Francisco | 2025-04-14 – 2025-05-06 | 23 | — |
| JFK→LAS New York to Las Vegas | 2024-03-10 – 2024-05-06 | 58 | — |
| DEN→ATL Denver to Atlanta | 2024-01-08 – 2024-03-09 | 62 | — |
| ATL→ORD Atlanta to Chicago | 2023-11-23 – 2023-11-24 | 2 | — |
Because the same number has served different journeys, the statistics above describe only the route DL491 currently operates. Blending them would produce an average of two different flights.
Why DL491 runs late
Where US DOT attributed the delay minutes on this flight.
crew, maintenance, boarding, fuelling — within the carrier’s control
the inbound aircraft was late, so this flight started late
airspace and airport capacity, including weather-driven flow control
weather severe enough to stop this flight specifically
Share of the delay minutes US DOT attributed to each cause for DL491 on BZN → SLC. A single late flight can carry more than one cause, and only delays of fifteen minutes or more are attributed at all.
Data and methodology
Calculated by FlyerIntel from 536 records of DL491 operating BZN → 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.