DL497
DL497 (Delta Air Lines) is a multi-stop service on 2 routes, busiest Boston to Las Vegas. Of 891 departures recorded from October 2024 to July 2026, 81.9% left on time, according to the US BTS.
- On-time departures81.9%of 891 flights
- Average delay9.4 min
- July 202631▲ 0.0%vs July 2025
- Cancelled0.5%
- Legs flown under this number2
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 | 38 | 35 | ▼ 7.9% |
| February | 32 | 31 | ▼ 3.1% |
| March | 56 | 56 | 0.0% |
| April | 60 | 60 | 0.0% |
| May | 37 | 37 | 0.0% |
| June | 30 | 30 | 0.0% |
| July | 31 | 31 | 0.0% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 31 | – | in progress |
| November | 30 | – | – |
| December | 43 | – | – |
| Year to date (Jan–Jul) | 284 | 280 | ▼ 1.4% |
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 | 86.8% | 75.8% | ▼ 12.8% |
| February | 75.0% | 75.9% | ▲ 1.1% |
| March | 80.4% | 78.6% | ▼ 2.2% |
| April | 86.7% | 88.3% | ▲ 1.9% |
| May | 67.6% | 91.9% | ▲ 36.0% |
| June | 80.0% | 96.7% | ▲ 20.8% |
| July | 71.0% | 80.7% | ▲ 13.6% |
| August | 71.0% | – | – |
| September | 80.0% | – | – |
| October | 77.4% | – | in progress |
| November | 80.0% | – | – |
| December | 76.7% | – | – |
| Year-to-date average (Jan–Jul) | 78.2% | 84.0% | ▲ 7.4% |
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 | 2 | – |
| February | 0 | 2 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 0 | 4 |
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 99.6% 887
- Cancelled 0.4% 4
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
2| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| BOS LAS Boston Logan International Airport – Harry Reid International Airport | 3,822 | 8.2 min | 82.1% | 648 |
| LAS BOS Harry Reid International Airport – Boston Logan International Airport | 3,822 | 12.5 min | 81.1% | 243 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 40 | 40 | 92.5% | 0 |
| November 2024 | 60 | 60 | 88.3% | 0 |
| December 2024 | 62 | 62 | 83.9% | 0 |
| January 2025 | 38 | 38 | 86.8% | 0 |
| February 2025 | 32 | 32 | 75.0% | 0 |
| March 2025 | 56 | 56 | 80.4% | 0 |
| April 2025 | 60 | 60 | 86.7% | 0 |
| May 2025 | 37 | 37 | 67.6% | 0 |
| June 2025 | 30 | 30 | 80.0% | 0 |
| July 2025 | 31 | 31 | 71.0% | 0 |
| August 2025 | 31 | 31 | 71.0% | 0 |
| September 2025 | 30 | 30 | 80.0% | 0 |
| October 2025 | 31 | 31 | 77.4% | 0 |
| November 2025 | 30 | 30 | 80.0% | 0 |
| December 2025 | 43 | 43 | 76.7% | 0 |
| January 2026 | 35 | 33 | 75.8% | 2 |
| February 2026 | 31 | 29 | 75.9% | 2 |
| March 2026 | 56 | 56 | 78.6% | 0 |
| April 2026 | 60 | 60 | 88.3% | 0 |
| May 2026 | 37 | 37 | 91.9% | 0 |
| June 2026 | 30 | 30 | 96.7% | 0 |
| July 2026 | 31 | 31 | 80.7% | 0 |