AA3309
AA3309 (American Airlines) is a multi-stop service on 16 routes, busiest Boston to Chicago. Of 564 departures recorded from February 2025 to July 2026, 68.2% left on time, according to the US BTS.
- On-time departures68.2%of 564 flights
- Average delay34.0 min
- July 202631▲ 3.3%vs July 2025
- Cancelled2.5%
- Legs flown under this number16
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods17 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | – | 31 | – |
| February | 16 | 10 | ▼ 37.5% |
| March | 28 | – | – |
| April | 29 | 48 | ▲ 65.5% |
| May | 27 | 51 | ▲ 88.9% |
| June | 30 | 28 | ▼ 6.7% |
| July | 30 | 31 | ▲ 3.3% |
| August | 31 | – | – |
| September | 46 | – | – |
| October | 25 | – | in progress |
| November | 58 | – | – |
| December | 45 | – | – |
according to the US BTS · February 2025 → 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 periods17 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | – | 60.7% | – |
| February | 56.3% | 90.0% | ▲ 60.0% |
| March | 71.4% | – | – |
| April | 75.0% | 64.6% | ▼ 13.9% |
| May | 81.5% | 65.3% | ▼ 19.8% |
| June | 89.7% | 61.5% | ▼ 31.4% |
| July | 63.3% | 55.6% | ▼ 12.3% |
| August | 40.0% | – | – |
| September | 76.1% | – | – |
| October | 76.0% | – | in progress |
| November | 87.9% | – | – |
| December | 46.7% | – | – |
according to the US BTS · February 2025 → July 2026
Average departure delay by month
Months without data are left blank.
according to the US BTS · February 2025 → July 2026
Cancelled departures by month
Months without data are left blank.
The most recent periods17 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | – | 3 | – |
| February | 0 | 0 | – |
| March | 0 | – | – |
| April | 1 | 0 | ▼ 100.0% |
| May | 0 | 2 | – |
| June | 1 | 2 | ▲ 100.0% |
| July | 0 | 4 | – |
| August | 1 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
according to the US BTS · February 2025 → 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 97.5% 550
- Cancelled 2.5% 14
Share of all recorded flights in the period, all legs. · Feb 13, 2025 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
8| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| BOS ORD Boston Logan International Airport – Chicago O'Hare International Airport | 1,391 | 15.6 min | 77.0% | 88 |
| DFW MFE Dallas Fort Worth International Airport – McAllen Miller International Airport | 756 | 21.0 min | 73.6% | 74 |
| BOS PHL Boston Logan International Airport – Philadelphia International Airport | 450 | 36.1 min | 59.4% | 70 |
| MFE DFW McAllen Miller International Airport – Dallas Fort Worth International Airport | 756 | 42.5 min | 60.5% | 44 |
| DTW DFW Detroit Metropolitan Wayne County Airport – Dallas Fort Worth International Airport | 1,587 | 52.3 min | 69.1% | 42 |
| DFW SNA Dallas Fort Worth International Airport – John Wayne Orange County International Airport | 1,935 | 43.2 min | 86.2% | 32 |
| CLT MKE Charlotte Douglas International Airport – General Mitchell International Airport | 1,048 | 2.0 min | 87.1% | 31 |
| MKE CLT General Mitchell International Airport – Charlotte Douglas International Airport | 1,048 | 7.9 min | 76.7% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| February 2025 | 16 | 16 | 56.3% | 0 |
| March 2025 | 28 | 28 | 71.4% | 0 |
| April 2025 | 29 | 28 | 75.0% | 1 |
| May 2025 | 27 | 27 | 81.5% | 0 |
| June 2025 | 30 | 29 | 89.7% | 1 |
| July 2025 | 30 | 30 | 63.3% | 0 |
| August 2025 | 31 | 30 | 40.0% | 1 |
| September 2025 | 46 | 46 | 76.1% | 0 |
| October 2025 | 25 | 25 | 76.0% | 0 |
| November 2025 | 58 | 58 | 87.9% | 0 |
| December 2025 | 45 | 45 | 46.7% | 0 |
| January 2026 | 31 | 28 | 60.7% | 3 |
| February 2026 | 10 | 10 | 90.0% | 0 |
| April 2026 | 48 | 48 | 64.6% | 0 |
| May 2026 | 51 | 49 | 65.3% | 2 |
| June 2026 | 28 | 26 | 61.5% | 2 |
| July 2026 | 31 | 27 | 55.6% | 4 |