Flight profile · American Airlines
AA1840
Charlotte (CLT) to Houston (IAH) · scheduled 10:20 PM – 11:59 PM
How AA1840 performs
973 operations, 2023-07-01 to 2026-06-30.
AA1840 arrived on time 64.3% of the time, against 74.8% for all CLT → IAH flights — this specific departure is 10.4 percentage points worse than the route as a whole. Against American Airlines’s own flights on this route it is 9.6 points worse.
Source: US DOT Bureau of Transportation Statistics · 973 operations between 2023-07-01 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| AA1840 | 64.3% | 3.70% | 1 min | 13.9% | 973 |
| American Airlines on CLT → IAH | 73.9% | 1.78% | -4 min | 10.0% | 4,939 |
| All CLT → IAH flights | 74.8% | 1.91% | -4 min | 9.4% | 7,330 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-30
By day of week
Does AA1840 run worse on particular days?
Wednesday is historically the most reliable day and Friday the least, a gap of 15.3 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 AA1840 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 AA1840 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 973 records of AA1840 operating CLT → 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.