DL398
DL398 (Delta Air Lines) is a multi-stop service on 2 routes, busiest Denver to New York. Of 546 departures recorded from October 2024 to July 2026, 87.7% left on time, according to the US BTS.
- On-time departures87.7%of 546 flights
- Average delay11.3 min
- July 202630▼ 3.2%vs July 2025
- Cancelled1.7%
- 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 periods16 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 31 | – | – |
| February | 28 | – | – |
| March | 31 | – | – |
| April | 30 | 23 | ▼ 23.3% |
| May | 30 | 31 | ▲ 3.3% |
| June | 30 | 30 | 0.0% |
| July | 31 | 30 | ▼ 3.2% |
| August | 30 | – | – |
| September | 30 | – | – |
| October | 31 | – | in progress |
| November | 30 | – | – |
| December | 19 | – | – |
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 periods16 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 96.8% | – | – |
| February | 77.8% | – | – |
| March | 93.6% | – | – |
| April | 90.0% | 95.7% | ▲ 6.3% |
| May | 83.3% | 86.7% | ▲ 4.0% |
| June | 83.3% | 89.7% | ▲ 7.6% |
| July | 82.1% | 82.1% | 0.0% |
| August | 80.0% | – | – |
| September | 96.7% | – | – |
| October | 93.6% | – | in progress |
| November | 89.7% | – | – |
| December | 84.2% | – | – |
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 periods16 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | – | – |
| February | 1 | – | – |
| March | 0 | – | – |
| April | 0 | 0 | – |
| May | 0 | 1 | – |
| June | 0 | 1 | – |
| July | 3 | 2 | ▼ 33.3% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| 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 98.4% 537
- Cancelled 1.6% 9
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 |
|---|---|---|---|---|
| DEN LGA Denver International Airport – LaGuardia Airport | 2,600 | 11.3 min | 87.6% | 541 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 95.0% | 0 |
| November 2024 | 30 | 30 | 93.3% | 0 |
| December 2024 | 31 | 31 | 74.2% | 0 |
| January 2025 | 31 | 31 | 96.8% | 0 |
| February 2025 | 28 | 27 | 77.8% | 1 |
| March 2025 | 31 | 31 | 93.6% | 0 |
| April 2025 | 30 | 30 | 90.0% | 0 |
| May 2025 | 30 | 30 | 83.3% | 0 |
| June 2025 | 30 | 30 | 83.3% | 0 |
| July 2025 | 31 | 28 | 82.1% | 3 |
| August 2025 | 30 | 30 | 80.0% | 0 |
| September 2025 | 30 | 30 | 96.7% | 0 |
| October 2025 | 31 | 31 | 93.6% | 0 |
| November 2025 | 30 | 29 | 89.7% | 1 |
| December 2025 | 19 | 19 | 84.2% | 0 |
| April 2026 | 23 | 23 | 95.7% | 0 |
| May 2026 | 31 | 30 | 86.7% | 1 |
| June 2026 | 30 | 29 | 89.7% | 1 |
| July 2026 | 30 | 28 | 82.1% | 2 |