Flight profile · Delta Air Lines
DL1299
Houston (IAH) to Salt Lake City (SLC) · scheduled 7:35 PM – 10:03 PM
How DL1299 performs
332 operations, 2025-01-06 to 2026-06-30.
DL1299 arrived on time 76.6% of the time, against 81.7% for all IAH → SLC flights — this specific departure is 5.1 percentage points worse than the route as a whole. Against Delta Air Lines’s own flights on this route it is 6.5 points worse.
Source: US DOT Bureau of Transportation Statistics · 332 operations between 2025-01-06 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| DL1299 | 76.6% | 0.30% | -9 min | 10.0% | 332 |
| Delta Air Lines on IAH → SLC | 83.1% | 0.49% | -10 min | 7.0% | 3,073 |
| All IAH → SLC flights | 81.7% | 0.78% | -8 min | 7.3% | 5,909 |
Source: FlyerIntel analysis of US DOT BTS data · 2025-01-06 to 2026-06-30
Other routes DL1299 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→IAH Salt Lake City to Houston | 2025-06-08 – 2026-06-30 | 164 | 75.2% |
| MSP→PHX Minneapolis to Phoenix | 2024-12-21 – 2026-01-04 | 22 | — |
| DTW→MCI Detroit to Kansas City | 2024-06-07 – 2024-12-18 | 134 | 88.8% |
| MCI→DTW Kansas City to Detroit | 2024-09-09 – 2024-10-06 | 24 | — |
| LGA→BOS New York to Boston | 2024-06-08 – 2024-07-06 | 5 | — |
| ATL→CHS Atlanta to Charleston | 2023-07-01 – 2024-06-06 | 214 | 83.3% |
| JAN→ATL Jackson to Atlanta | 2024-03-10 – 2024-05-06 | 58 | — |
| MOB→ATL Mobile to Atlanta | 2024-01-08 – 2024-03-09 | 62 | — |
| ATL→EWR Atlanta to Newark | 2023-11-02 – 2023-11-03 | 2 | — |
Because the same number has served different journeys, the statistics above describe only the route DL1299 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 332 records of DL1299 operating IAH → 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.