DL3166
DL3166 (Delta Air Lines) is a multi-stop service on 11 routes, busiest Atlanta to Richmond. Of 457 departures recorded from October 2024 to July 2026, 77.4% left on time, according to the US BTS.
- On-time departures77.4%of 457 flights
- Average delay13.0 min
- July 202654▲ 74.2%vs July 2025
- Cancelled0.4%
- Legs flown under this number11
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 | 10 | 4 | ▼ 60.0% |
| February | – | – | – |
| March | – | 24 | – |
| April | 26 | 12 | ▼ 53.8% |
| May | 10 | – | – |
| June | 23 | 42 | ▲ 82.6% |
| July | 31 | 54 | ▲ 74.2% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 31 | – | in progress |
| November | 30 | – | – |
| December | 37 | – | – |
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 | 100.0% | 100.0% | 0.0% |
| February | – | – | – |
| March | – | 91.3% | – |
| April | 88.5% | 100.0% | ▲ 13.0% |
| May | 90.0% | – | – |
| June | 52.2% | 92.9% | ▲ 78.0% |
| July | 50.0% | 85.2% | ▲ 70.4% |
| August | 71.0% | – | – |
| September | 66.7% | – | – |
| October | 71.0% | – | in progress |
| November | 83.3% | – | – |
| December | 75.7% | – | – |
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 | 0 | – |
| February | – | – | – |
| March | – | 1 | – |
| April | 0 | 0 | – |
| May | 0 | – | – |
| June | 0 | 0 | – |
| July | 1 | 0 | ▼ 100.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
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 99.6% 455
- Cancelled 0.4% 2
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
5| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| ATL RIC Hartsfield Jackson Atlanta International Airport – Richmond International Airport | 773 | 22.9 min | 67.0% | 195 |
| DTW MSN Detroit Metropolitan Wayne County Airport – Dane County Regional Truax Field | 500 | 15.9 min | 71.0% | 62 |
| RIC DTW Richmond International Airport – Detroit Metropolitan Wayne County Airport | 734 | 2.8 min | 85.4% | 48 |
| DTW RIC Detroit Metropolitan Wayne County Airport – Richmond International Airport | 734 | -1.6 min | 91.7% | 48 |
| RDU ATL Raleigh-Durham International Airport – Hartsfield Jackson Atlanta International Airport | 572 | -0.5 min | 94.3% | 36 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 85.0% | 0 |
| November 2024 | 25 | 25 | 60.0% | 0 |
| December 2024 | 17 | 17 | 70.6% | 0 |
| January 2025 | 10 | 10 | 100.0% | 0 |
| April 2025 | 26 | 26 | 88.5% | 0 |
| May 2025 | 10 | 10 | 90.0% | 0 |
| June 2025 | 23 | 23 | 52.2% | 0 |
| July 2025 | 31 | 30 | 50.0% | 1 |
| August 2025 | 31 | 31 | 71.0% | 0 |
| September 2025 | 30 | 30 | 66.7% | 0 |
| October 2025 | 31 | 31 | 71.0% | 0 |
| November 2025 | 30 | 30 | 83.3% | 0 |
| December 2025 | 37 | 37 | 75.7% | 0 |
| January 2026 | 4 | 4 | 100.0% | 0 |
| March 2026 | 24 | 23 | 91.3% | 1 |
| April 2026 | 12 | 12 | 100.0% | 0 |
| June 2026 | 42 | 42 | 92.9% | 0 |
| July 2026 | 54 | 54 | 85.2% | 0 |