DL304
DL304 (Delta Air Lines) is a multi-stop service on 11 routes, busiest Detroit to Santa Ana. Of 722 departures recorded from October 2024 to July 2026, 78.5% left on time, according to the US BTS.
- On-time departures78.5%of 722 flights
- Average delay17.2 min
- July 202662▲ 59.0%vs July 2025
- Cancelled0.7%
- Legs flown under this number11
Recorded departures by month
All legs under this number combined; see the leg table.
The most recent periods19 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 22 | 33 | ▲ 50.0% |
| February | 18 | 30 | ▲ 66.7% |
| March | 28 | 8 | ▼ 71.4% |
| April | 28 | 4 | ▼ 85.7% |
| May | 30 | 2 | ▼ 93.3% |
| June | 24 | 47 | ▲ 95.8% |
| July | 39 | 62 | ▲ 59.0% |
| August | 54 | – | – |
| September | 56 | – | – |
| October | 62 | – | in progress |
| November | 58 | – | – |
| December | 49 | – | – |
| Year to date (Jan–Jul) | 189 | 186 | ▼ 1.6% |
according to the US BTS · October 2024 → July 2026
On-time departures by month
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods19 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 72.7% | 65.6% | ▼ 9.8% |
| February | 61.1% | 93.3% | ▲ 52.7% |
| March | 78.6% | 100.0% | ▲ 27.3% |
| April | 85.2% | 25.0% | ▼ 70.7% |
| May | 83.3% | 100.0% | ▲ 20.0% |
| June | 87.5% | 85.1% | ▼ 2.7% |
| July | 84.6% | 76.3% | ▼ 9.9% |
| August | 74.1% | – | – |
| September | 91.1% | – | – |
| October | 71.0% | – | in progress |
| November | 77.6% | – | – |
| December | 61.2% | – | – |
| Year-to-date average (Jan–Jul) | 79.0% | 77.9% | ▼ 1.4% |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 1 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 1 | 0 | ▼ 100.0% |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 3 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 1 | 4 | ▲ 300.0% |
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 99.3% 717
- Cancelled 0.7% 5
Share of all recorded flights in the period, all legs. · Oct 13, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
4| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| DTW SNA Detroit Metropolitan Wayne County Airport – John Wayne Orange County International Airport | 3,148 | 13.8 min | 85.1% | 345 |
| SNA DTW John Wayne Orange County International Airport – Detroit Metropolitan Wayne County Airport | 3,148 | 23.6 min | 68.1% | 229 |
| ATL ABE Hartsfield Jackson Atlanta International Airport – Lehigh Valley International Airport | 1,114 | 1.6 min | 88.9% | 55 |
| ABE ATL Lehigh Valley International Airport – Hartsfield Jackson Atlanta International Airport | 1,114 | 33.7 min | 71.2% | 54 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 16 | 16 | 81.3% | 0 |
| November 2024 | 23 | 23 | 100.0% | 0 |
| December 2024 | 29 | 29 | 72.4% | 0 |
| January 2025 | 22 | 22 | 72.7% | 0 |
| February 2025 | 18 | 18 | 61.1% | 0 |
| March 2025 | 28 | 28 | 78.6% | 0 |
| April 2025 | 28 | 27 | 85.2% | 1 |
| May 2025 | 30 | 30 | 83.3% | 0 |
| June 2025 | 24 | 24 | 87.5% | 0 |
| July 2025 | 39 | 39 | 84.6% | 0 |
| August 2025 | 54 | 54 | 74.1% | 0 |
| September 2025 | 56 | 56 | 91.1% | 0 |
| October 2025 | 62 | 62 | 71.0% | 0 |
| November 2025 | 58 | 58 | 77.6% | 0 |
| December 2025 | 49 | 49 | 61.2% | 0 |
| January 2026 | 33 | 32 | 65.6% | 1 |
| February 2026 | 30 | 30 | 93.3% | 0 |
| March 2026 | 8 | 8 | 100.0% | 0 |
| April 2026 | 4 | 4 | 25.0% | 0 |
| May 2026 | 2 | 2 | 100.0% | 0 |
| June 2026 | 47 | 47 | 85.1% | 0 |
| July 2026 | 62 | 59 | 76.3% | 3 |