DL539
DL539 (Delta Air Lines) is a multi-stop service on 4 routes, busiest Atlanta to Portland. Of 1,154 departures recorded from October 2024 to July 2026, 86.5% left on time, according to the US BTS.
- On-time departures86.5%of 1,154 flights
- Average delay6.1 min
- July 202662▲ 0.0%vs July 2025
- Cancelled0.8%
- Legs flown under this number4
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 | 62 | 35 | ▼ 43.5% |
| February | 56 | 45 | ▼ 19.6% |
| March | 62 | 62 | 0.0% |
| April | 60 | 42 | ▼ 30.0% |
| May | 37 | 56 | ▲ 51.4% |
| June | 53 | 60 | ▲ 13.2% |
| July | 62 | 62 | 0.0% |
| August | 62 | – | – |
| September | 60 | – | – |
| October | 62 | – | in progress |
| November | 60 | – | – |
| December | 62 | – | – |
| Year to date (Jan–Jul) | 392 | 362 | ▼ 7.7% |
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 | 74.2% | 91.2% | ▲ 22.9% |
| February | 82.1% | 86.1% | ▲ 4.8% |
| March | 91.9% | 88.3% | ▼ 3.9% |
| April | 93.3% | 90.2% | ▼ 3.3% |
| May | 94.6% | 89.3% | ▼ 5.6% |
| June | 83.0% | 88.3% | ▲ 6.4% |
| July | 90.3% | 80.7% | ▼ 10.7% |
| August | 93.6% | – | – |
| September | 93.3% | – | – |
| October | 85.5% | – | in progress |
| November | 93.2% | – | – |
| December | 65.0% | – | – |
| Year-to-date average (Jan–Jul) | 87.1% | 87.7% | ▲ 0.7% |
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 | 2 | – |
| March | 0 | 2 | – |
| April | 0 | 1 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| December | 2 | – | – |
| Year to date (Jan–Jul) | 0 | 6 |
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 99.2% 1,145
- Cancelled 0.8% 9
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
4| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| ATL PDX Hartsfield Jackson Atlanta International Airport – Portland International Airport | 3,489 | 3.3 min | 89.7% | 590 |
| PDX ATL Portland International Airport – Hartsfield Jackson Atlanta International Airport | 3,489 | 9.2 min | 83.0% | 496 |
| DFW ATL Dallas Fort Worth International Airport – Hartsfield Jackson Atlanta International Airport | 1,175 | 10.7 min | 81.6% | 38 |
| PHX DTW Phoenix Sky Harbor International Airport – Detroit Metropolitan Wayne County Airport | 2,683 | 2.8 min | 86.7% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 90.0% | 0 |
| November 2024 | 30 | 30 | 86.7% | 0 |
| December 2024 | 44 | 44 | 77.3% | 0 |
| January 2025 | 62 | 62 | 74.2% | 0 |
| February 2025 | 56 | 56 | 82.1% | 0 |
| March 2025 | 62 | 62 | 91.9% | 0 |
| April 2025 | 60 | 60 | 93.3% | 0 |
| May 2025 | 37 | 37 | 94.6% | 0 |
| June 2025 | 53 | 53 | 83.0% | 0 |
| July 2025 | 62 | 62 | 90.3% | 0 |
| August 2025 | 62 | 62 | 93.6% | 0 |
| September 2025 | 60 | 60 | 93.3% | 0 |
| October 2025 | 62 | 62 | 85.5% | 0 |
| November 2025 | 60 | 59 | 93.2% | 1 |
| December 2025 | 62 | 60 | 65.0% | 2 |
| January 2026 | 35 | 34 | 91.2% | 1 |
| February 2026 | 45 | 43 | 86.1% | 2 |
| March 2026 | 62 | 60 | 88.3% | 2 |
| April 2026 | 42 | 41 | 90.2% | 1 |
| May 2026 | 56 | 56 | 89.3% | 0 |
| June 2026 | 60 | 60 | 88.3% | 0 |
| July 2026 | 62 | 62 | 80.7% | 0 |