Flight profile · Delta Air Lines
DL1284
Atlanta (ATL) to Houston (IAH) · scheduled 7:59 PM – 9:14 PM
How DL1284 performs
967 operations, 2023-07-01 to 2026-06-30.
DL1284 arrived on time 72.2% of the time, against 75.7% for all ATL → IAH flights — this specific departure is 3.5 percentage points worse than the route as a whole. Against Delta Air Lines’s own flights on this route it is 4.3 points worse.
Source: US DOT Bureau of Transportation Statistics · 967 operations between 2023-07-01 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| DL1284 | 72.2% | 1.86% | 0 min | 10.9% | 967 |
| Delta Air Lines on ATL → IAH | 76.6% | 1.49% | -2 min | 7.0% | 7,119 |
| All ATL → IAH flights | 75.7% | 1.65% | -3 min | 8.7% | 13,939 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-30
By day of week
Does DL1284 run worse on particular days?
Wednesday is historically the most reliable day and Sunday the least, a gap of 14.8 percentage points.
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-30 · Days with fewer than 120 operations are not scored.
Other routes DL1284 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 |
|---|---|---|---|
| CHS→LGA Charleston to New York | 2024-10-12 – 2024-11-09 | 5 | — |
| CHA→ATL Chattanooga to Atlanta | 2024-09-14 – 2024-10-05 | 4 | — |
| ATL→CHA Atlanta to Chattanooga | 2024-09-14 – 2024-10-05 | 4 | — |
| RDU→BOS Raleigh–Durham to Boston | 2024-06-08 – 2024-09-07 | 15 | — |
| DTW→DFW Detroit to Dallas–Fort Worth | 2024-05-07 – 2024-06-06 | 31 | — |
| DFW→DTW Dallas–Fort Worth to Detroit | 2024-05-07 – 2024-06-06 | 26 | — |
Because the same number has served different journeys, the statistics above describe only the route DL1284 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 967 records of DL1284 operating ATL → IAH, 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.