DL870
DL870 (Delta Air Lines) flies Seattle to Dallas-Fort Worth. Of 611 departures recorded from October 2024 to July 2026, 72.6% left on time, according to the US BTS.
- On-time departures72.6%of 611 flights
- Average delay24.8 min
- July 202630▲ 11.1%vs July 2025
- Cancelled2.0%
according to the US BTS · Oct 12, 2024 → Jul 31, 2026 domestic flights only
Recorded departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
The most recent periods19 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 27 | 30 | ▲ 11.1% |
| February | 22 | 28 | ▲ 27.3% |
| March | 26 | 31 | ▲ 19.2% |
| April | 26 | 30 | ▲ 15.4% |
| May | 25 | 29 | ▲ 16.0% |
| June | 26 | 28 | ▲ 7.7% |
| July | 27 | 30 | ▲ 11.1% |
| August | 29 | – | – |
| September | 30 | – | – |
| October | 31 | – | in progress |
| November | 30 | – | – |
| December | 28 | – | – |
| Year to date (Jan–Jul) | 179 | 206 | ▲ 15.1% |
according to the US BTS · October 2024 → July 2026
On-time departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
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 | 84.0% | 65.4% | ▼ 22.2% |
| February | 68.2% | 82.1% | ▲ 20.5% |
| March | 84.6% | 86.2% | ▲ 1.9% |
| April | 69.2% | 80.0% | ▲ 15.6% |
| May | 80.0% | 86.2% | ▲ 7.8% |
| June | 50.0% | 46.4% | ▼ 7.1% |
| July | 63.0% | 70.0% | ▲ 11.2% |
| August | 51.7% | – | – |
| September | 76.7% | – | – |
| October | 70.0% | – | in progress |
| November | 83.3% | – | – |
| December | 66.7% | – | – |
| Year-to-date average (Jan–Jul) | 71.3% | 73.8% | ▲ 3.5% |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Partial coverage: domestic flights only · 22 of 22 periods have data
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 2 | 4 | ▲ 100.0% |
| February | 0 | 0 | – |
| March | 0 | 2 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 1 | – | in progress |
| November | 0 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 2 | 6 | ▲ 200.0% |
according to the US BTS · October 2024 → July 2026
This is not a forecast
This is a historical record of departures already flown, not a forecast for your flight.
Cancellation share
- Not cancelled 98.0% 599
- Cancelled 2.0% 12
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 |
|---|---|---|---|---|
| SEA DFW Seattle–Tacoma International Airport – Dallas Fort Worth International Airport | 2,668 | 24.8 min | 72.6% | 611 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 19 | 19 | 94.7% | 0 |
| November 2024 | 28 | 27 | 74.1% | 1 |
| December 2024 | 31 | 30 | 70.0% | 1 |
| January 2025 | 27 | 25 | 84.0% | 2 |
| February 2025 | 22 | 22 | 68.2% | 0 |
| March 2025 | 26 | 26 | 84.6% | 0 |
| April 2025 | 26 | 26 | 69.2% | 0 |
| May 2025 | 25 | 25 | 80.0% | 0 |
| June 2025 | 26 | 26 | 50.0% | 0 |
| July 2025 | 27 | 27 | 63.0% | 0 |
| August 2025 | 29 | 29 | 51.7% | 0 |
| September 2025 | 30 | 30 | 76.7% | 0 |
| October 2025 | 31 | 30 | 70.0% | 1 |
| November 2025 | 30 | 30 | 83.3% | 0 |
| December 2025 | 28 | 27 | 66.7% | 1 |
| January 2026 | 30 | 26 | 65.4% | 4 |
| February 2026 | 28 | 28 | 82.1% | 0 |
| March 2026 | 31 | 29 | 86.2% | 2 |
| April 2026 | 30 | 30 | 80.0% | 0 |
| May 2026 | 29 | 29 | 86.2% | 0 |
| June 2026 | 28 | 28 | 46.4% | 0 |
| July 2026 | 30 | 30 | 70.0% | 0 |