DL2921
DL2921 (Delta Air Lines) is a multi-stop service on 5 routes, busiest Salt Lake City to Seattle. Of 441 departures recorded from December 2024 to July 2026, 85.4% left on time, according to the US BTS.
- On-time departures85.4%of 441 flights
- Average delay7.2 min
- July 202631▲ 0.0%vs July 2025
- Cancelled0.7%
- Legs flown under this number5
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods18 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 28 | 2 | ▼ 92.9% |
| February | 28 | 2 | ▼ 92.9% |
| March | 8 | 24 | ▲ 200.0% |
| April | – | 30 | – |
| May | 26 | 31 | ▲ 19.2% |
| June | 30 | 30 | 0.0% |
| July | 31 | 31 | 0.0% |
| August | 29 | – | – |
| September | 30 | – | – |
| October | 30 | – | in progress |
| November | 29 | – | – |
| December | 19 | – | – |
according to the US BTS · December 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 periods18 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 85.2% | 100.0% | ▲ 17.4% |
| February | 75.0% | 100.0% | ▲ 33.3% |
| March | 87.5% | 91.3% | ▲ 4.3% |
| April | – | 100.0% | – |
| May | 73.1% | 87.1% | ▲ 19.2% |
| June | 90.0% | 93.3% | ▲ 3.7% |
| July | 74.2% | 87.1% | ▲ 17.4% |
| August | 86.2% | – | – |
| September | 96.7% | – | – |
| October | 80.0% | – | in progress |
| November | 82.1% | – | – |
| December | 68.4% | – | – |
according to the US BTS · December 2024 → July 2026
Average departure delay by month
Months without data are left blank.
according to the US BTS · December 2024 → July 2026
Cancelled departures by month
Months without data are left blank.
The most recent periods18 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 1 | 0 | ▼ 100.0% |
| February | 0 | 0 | – |
| March | 0 | 1 | – |
| April | – | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| December | 0 | – | – |
according to the US BTS · December 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% 438
- Cancelled 0.7% 3
Share of all recorded flights in the period, all legs. · Dec 24, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
2| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SLC SEA Salt Lake City International Airport – Seattle–Tacoma International Airport | 1,107 | 6.6 min | 86.3% | 373 |
| MSP PHL Minneapolis–Saint Paul International Airport / Wold–Chamberlain Field – Philadelphia International Airport | 1,574 | 9.9 min | 80.3% | 62 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| December 2024 | 3 | 3 | 100.0% | 0 |
| January 2025 | 28 | 27 | 85.2% | 1 |
| February 2025 | 28 | 28 | 75.0% | 0 |
| March 2025 | 8 | 8 | 87.5% | 0 |
| May 2025 | 26 | 26 | 73.1% | 0 |
| June 2025 | 30 | 30 | 90.0% | 0 |
| July 2025 | 31 | 31 | 74.2% | 0 |
| August 2025 | 29 | 29 | 86.2% | 0 |
| September 2025 | 30 | 30 | 96.7% | 0 |
| October 2025 | 30 | 30 | 80.0% | 0 |
| November 2025 | 29 | 28 | 82.1% | 1 |
| December 2025 | 19 | 19 | 68.4% | 0 |
| January 2026 | 2 | 2 | 100.0% | 0 |
| February 2026 | 2 | 2 | 100.0% | 0 |
| March 2026 | 24 | 23 | 91.3% | 1 |
| April 2026 | 30 | 30 | 100.0% | 0 |
| May 2026 | 31 | 31 | 87.1% | 0 |
| June 2026 | 30 | 30 | 93.3% | 0 |
| July 2026 | 31 | 31 | 87.1% | 0 |