DL879
DL879 (Delta Air Lines) is a multi-stop service on 11 routes, busiest Portland to Atlanta. Of 663 departures recorded from October 2024 to July 2026, 83.7% left on time, according to the US BTS.
- On-time departures83.7%of 663 flights
- Average delay7.1 min
- July 202631▲ 93.8%vs July 2025
- Cancelled1.2%
- Legs flown under this number11
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
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 | 52 | 35 | ▼ 32.7% |
| February | 56 | 11 | ▼ 80.4% |
| March | 39 | 24 | ▼ 38.5% |
| April | 30 | 30 | 0.0% |
| May | 31 | 31 | 0.0% |
| June | 21 | 30 | ▲ 42.9% |
| July | 16 | 31 | ▲ 93.8% |
| August | 24 | – | – |
| September | 29 | – | – |
| October | 31 | – | in progress |
| November | 29 | – | – |
| December | 43 | – | – |
| Year to date (Jan–Jul) | 245 | 192 | ▼ 21.6% |
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 | 83.7% | 79.4% | ▼ 5.1% |
| February | 76.8% | 90.9% | ▲ 18.4% |
| March | 94.9% | 87.5% | ▼ 7.8% |
| April | 83.3% | 86.7% | ▲ 4.0% |
| May | 87.1% | 96.8% | ▲ 11.1% |
| June | 75.0% | 86.7% | ▲ 15.6% |
| July | 62.5% | 76.7% | ▲ 22.7% |
| August | 69.6% | – | – |
| September | 82.8% | – | – |
| October | 87.1% | – | in progress |
| November | 79.3% | – | – |
| December | 88.1% | – | – |
| Year-to-date average (Jan–Jul) | 80.5% | 86.4% | ▲ 7.3% |
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 | 3 | 1 | ▼ 66.7% |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 1 | 0 | ▼ 100.0% |
| July | 0 | 1 | – |
| August | 1 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 4 | 2 | ▼ 50.0% |
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.
This number flies several legs
Several legs: the headline figure averages all of them. See the leg table.
Cancellation share
- Not cancelled 98.8% 655
- Cancelled 1.2% 8
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
88 of 8
| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SNA SEA John Wayne Orange County International Airport – Seattle–Tacoma International Airport | 1,576 | 11.6 min | 76.1% | 162 |
| PDX ATL Portland International Airport – Hartsfield Jackson Atlanta International Airport | 3,489 | 4.2 min | 85.7% | 162 |
| CHA ATL Chattanooga Metropolitan Airport (Lovell Field) – Hartsfield Jackson Atlanta International Airport | 171 | 17.2 min | 80.3% | 62 |
| ATL CHA Hartsfield Jackson Atlanta International Airport – Chattanooga Metropolitan Airport (Lovell Field) | 171 | 8.0 min | 83.3% | 62 |
| DEN SLC Denver International Airport – Salt Lake City International Airport | 628 | 4.4 min | 88.1% | 59 |
| LAS ATL Harry Reid International Airport – Hartsfield Jackson Atlanta International Airport | 2,805 | 11.8 min | 79.6% | 55 |
| TPA ATL Tampa International Airport – Hartsfield Jackson Atlanta International Airport | 655 | -2.2 min | 91.7% | 36 |
| SLC ORD Salt Lake City International Airport – Chicago O'Hare International Airport | 2,006 | -2.7 min | 96.8% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 95.0% | 0 |
| November 2024 | 30 | 30 | 86.7% | 0 |
| December 2024 | 20 | 20 | 75.0% | 0 |
| January 2025 | 52 | 49 | 83.7% | 3 |
| February 2025 | 56 | 56 | 76.8% | 0 |
| March 2025 | 39 | 39 | 94.9% | 0 |
| April 2025 | 30 | 30 | 83.3% | 0 |
| May 2025 | 31 | 31 | 87.1% | 0 |
| June 2025 | 21 | 20 | 75.0% | 1 |
| July 2025 | 16 | 16 | 62.5% | 0 |
| August 2025 | 24 | 23 | 69.6% | 1 |
| September 2025 | 29 | 29 | 82.8% | 0 |
| October 2025 | 31 | 31 | 87.1% | 0 |
| November 2025 | 29 | 29 | 79.3% | 0 |
| December 2025 | 43 | 42 | 88.1% | 1 |
| January 2026 | 35 | 34 | 79.4% | 1 |
| February 2026 | 11 | 11 | 90.9% | 0 |
| March 2026 | 24 | 24 | 87.5% | 0 |
| April 2026 | 30 | 30 | 86.7% | 0 |
| May 2026 | 31 | 31 | 96.8% | 0 |
| June 2026 | 30 | 30 | 86.7% | 0 |
| July 2026 | 31 | 30 | 76.7% | 1 |