Flight profile · Delta Air Lines
DL1143
Los Angeles (LAX) to Houston (IAH) · scheduled 8:45 AM – 2:12 PM
How DL1143 performs
1,006 operations, 2023-07-01 to 2026-06-30.
Source: US DOT Bureau of Transportation Statistics · 1,006 operations between 2023-07-01 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| DL1143 | 85.4% | 0.70% | -9 min | 4.7% | 1,006 |
| Delta Air Lines on LAX → IAH | 83.9% | 1.11% | -8 min | 6.0% | 1,977 |
| All LAX → IAH flights | 85.4% | 1.06% | -9 min | 5.0% | 16,063 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-30
By day of week
Does DL1143 run worse on particular days?
Monday is historically the most reliable day and Saturday the least, a gap of 9.4 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 DL1143 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.
Because the same number has served different journeys, the statistics above describe only the route DL1143 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 1,006 records of DL1143 operating LAX → 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.