AA518
AA518 (American Airlines) is a multi-stop service on 2 routes, busiest San Diego to Chicago. Of 521 departures recorded from October 2024 to July 2026, 91.1% left on time, according to the US BTS.
- On-time departures91.1%of 521 flights
- Average delay8.3 min
- July 202631▲ 0.0%vs July 2025
- Cancelled0.8%
- Legs flown under this number2
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods15 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 31 | – | – |
| February | 28 | – | – |
| March | 31 | – | – |
| April | 30 | 24 | ▼ 20.0% |
| May | 31 | 31 | 0.0% |
| June | 30 | 30 | 0.0% |
| July | 31 | 31 | 0.0% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 31 | – | in progress |
| November | 1 | – | – |
| December | – | – | – |
according to the US BTS · October 2024 → July 2026
On-time departures by month
Months without data are left blank.
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods15 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 90.3% | – | – |
| February | 96.4% | – | – |
| March | 87.1% | – | – |
| April | 96.6% | 95.8% | ▼ 0.7% |
| May | 93.6% | 96.8% | ▲ 3.4% |
| June | 90.0% | 83.3% | ▼ 7.4% |
| July | 89.7% | 87.1% | ▼ 2.9% |
| August | 83.9% | – | – |
| September | 86.7% | – | – |
| October | 93.6% | – | in progress |
| November | 100.0% | – | – |
| December | – | – | – |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Months without data are left blank.
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Months without data are left blank.
The most recent periods15 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | – | – |
| February | 0 | – | – |
| March | 0 | – | – |
| April | 1 | 0 | ▼ 100.0% |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 2 | 0 | ▼ 100.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | – | – | – |
according to the US BTS · October 2024 → July 2026
This is a historical record of departures already flown, not a forecast for your flight.
Several legs: the headline figure averages all of them. See the leg table.
Cancellation share
- Not cancelled 99.2% 517
- Cancelled 0.8% 4
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 31, 2026
Legs flown under this number
1| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SAN ORD San Diego International Airport – Chicago O'Hare International Airport | 2,768 | 7.6 min | 91.6% | 501 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 37 | 37 | 91.9% | 0 |
| November 2024 | 32 | 32 | 90.6% | 0 |
| December 2024 | 31 | 30 | 96.7% | 1 |
| January 2025 | 31 | 31 | 90.3% | 0 |
| February 2025 | 28 | 28 | 96.4% | 0 |
| March 2025 | 31 | 31 | 87.1% | 0 |
| April 2025 | 30 | 29 | 96.6% | 1 |
| May 2025 | 31 | 31 | 93.6% | 0 |
| June 2025 | 30 | 30 | 90.0% | 0 |
| July 2025 | 31 | 29 | 89.7% | 2 |
| August 2025 | 31 | 31 | 83.9% | 0 |
| September 2025 | 30 | 30 | 86.7% | 0 |
| October 2025 | 31 | 31 | 93.6% | 0 |
| November 2025 | 1 | 1 | 100.0% | 0 |
| April 2026 | 24 | 24 | 95.8% | 0 |
| May 2026 | 31 | 31 | 96.8% | 0 |
| June 2026 | 30 | 30 | 83.3% | 0 |
| July 2026 | 31 | 31 | 87.1% | 0 |