Flight profile · American Airlines
AA518
San Diego (SAN) to Chicago (ORD) · scheduled 6:15 AM – 12:31 PM
How AA518 performs
818 operations, 2023-07-01 to 2026-06-30.
AA518 arrived on time 89.1% of the time, against 82.1% for all SAN → ORD flights — this specific departure is 7.0 percentage points better than the route as a whole. Against American Airlines’s own flights on this route it is 7.9 points better.
Source: US DOT Bureau of Transportation Statistics · 818 operations between 2023-07-01 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| AA518 | 89.1% | 0.98% | -13 min | 3.6% | 818 |
| American Airlines on SAN → ORD | 81.2% | 1.23% | -10 min | 6.9% | 3,649 |
| All SAN → ORD flights | 82.1% | 1.14% | -9 min | 6.3% | 9,463 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-30
Other routes AA518 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 AA518 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 818 records of AA518 operating SAN → ORD, 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.