DL514
DL514 (Delta Air Lines) is a multi-stop service on 7 routes, busiest Boston to Phoenix. Of 811 departures recorded from October 2024 to July 2026, 76.4% left on time, according to the US BTS.
- On-time departures76.4%of 811 flights
- Average delay16.8 min
- July 202632▼ 44.8%vs July 2025
- Cancelled1.2%
- Legs flown under this number7
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 | 16 | 30 | ▲ 87.5% |
| February | 16 | 45 | ▲ 181.3% |
| March | 32 | 62 | ▲ 93.8% |
| April | 18 | 42 | ▲ 133.3% |
| May | 29 | 31 | ▲ 6.9% |
| June | 44 | 30 | ▼ 31.8% |
| July | 58 | 32 | ▼ 44.8% |
| August | 35 | – | – |
| September | 49 | – | – |
| October | 62 | – | in progress |
| November | 58 | – | – |
| December | 47 | – | – |
| Year to date (Jan–Jul) | 213 | 272 | ▲ 27.7% |
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 | 93.8% | 79.3% | ▼ 15.4% |
| February | 62.5% | 85.4% | ▲ 36.6% |
| March | 68.8% | 90.3% | ▲ 31.4% |
| April | 55.6% | 95.2% | ▲ 71.4% |
| May | 62.1% | 80.7% | ▲ 29.9% |
| June | 65.9% | 76.7% | ▲ 16.3% |
| July | 61.1% | 80.7% | ▲ 32.0% |
| August | 74.3% | – | – |
| September | 69.4% | – | – |
| October | 75.8% | – | in progress |
| November | 81.0% | – | – |
| December | 70.2% | – | – |
| Year-to-date average (Jan–Jul) | 67.1% | 84.0% | ▲ 25.2% |
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 | 4 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 4 | 1 | ▼ 75.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 4 | 6 | ▲ 50.0% |
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 98.8% 801
- Cancelled 1.2% 10
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
3| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| BOS PHX Boston Logan International Airport – Phoenix Sky Harbor International Airport | 3,693 | 12.4 min | 79.2% | 520 |
| PHX BOS Phoenix Sky Harbor International Airport – Boston Logan International Airport | 3,693 | 24.1 min | 72.1% | 205 |
| LAS ATL Harry Reid International Airport – Hartsfield Jackson Atlanta International Airport | 2,805 | 21.4 min | 67.7% | 34 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 19 | 19 | 84.2% | 0 |
| November 2024 | 28 | 28 | 78.6% | 0 |
| December 2024 | 28 | 28 | 82.1% | 0 |
| January 2025 | 16 | 16 | 93.8% | 0 |
| February 2025 | 16 | 16 | 62.5% | 0 |
| March 2025 | 32 | 32 | 68.8% | 0 |
| April 2025 | 18 | 18 | 55.6% | 0 |
| May 2025 | 29 | 29 | 62.1% | 0 |
| June 2025 | 44 | 44 | 65.9% | 0 |
| July 2025 | 58 | 54 | 61.1% | 4 |
| August 2025 | 35 | 35 | 74.3% | 0 |
| September 2025 | 49 | 49 | 69.4% | 0 |
| October 2025 | 62 | 62 | 75.8% | 0 |
| November 2025 | 58 | 58 | 81.0% | 0 |
| December 2025 | 47 | 47 | 70.2% | 0 |
| January 2026 | 30 | 29 | 79.3% | 1 |
| February 2026 | 45 | 41 | 85.4% | 4 |
| March 2026 | 62 | 62 | 90.3% | 0 |
| April 2026 | 42 | 42 | 95.2% | 0 |
| May 2026 | 31 | 31 | 80.7% | 0 |
| June 2026 | 30 | 30 | 76.7% | 0 |
| July 2026 | 32 | 31 | 80.7% | 1 |