NK1638
NK1638 (Spirit Airlines) is a multi-stop service on 6 routes, busiest Las Vegas to Reno. Of 207 departures recorded from January 2025 to April 2026, 87.8% left on time, according to the US BTS.
- On-time departures87.8%of 207 flights
- Average delay6.8 min
- April 202613▲ 0.0%vs April 2025
- Cancelled1.5%
- Legs flown under this number6
Recorded departures by month
Short series — NK1638 has only 11 months so far. Enough to show the level now, not enough to read a trend.
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods11 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 23 | 24 | ▲ 4.3% |
| February | 28 | 28 | 0.0% |
| March | 9 | 31 | ▲ 244.4% |
| April | 13 | 13 | 0.0% |
| May | 3 | – | – |
| June | – | – | – |
| July | 23 | – | – |
| August | 12 | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | – | – | – |
| December | – | – | – |
| Year to date (Jan–Apr) | 73 | 96 | ▲ 31.5% |
according to the US BTS · January 2025 → April 2026
On-time departures by month
Short series — NK1638 has only 11 months so far. Enough to show the level now, not enough to read a trend.
Months without data are left blank.
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods11 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 95.7% | 95.8% | ▲ 0.2% |
| February | 82.1% | 81.5% | ▼ 0.8% |
| March | 77.8% | 82.8% | ▲ 6.4% |
| April | 92.3% | 92.3% | 0.0% |
| May | 66.7% | – | – |
| June | – | – | – |
| July | 87.0% | – | – |
| August | 100.0% | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | – | – | – |
| December | – | – | – |
| Year-to-date average (Jan–Apr) | 87.0% | 88.1% | ▲ 1.3% |
according to the US BTS · January 2025 → April 2026
Average departure delay by month
Short series — NK1638 has only 11 months so far. Enough to show the level now, not enough to read a trend.
Months without data are left blank.
according to the US BTS · January 2025 → April 2026
Cancelled departures by month
Short series — NK1638 has only 11 months so far. Enough to show the level now, not enough to read a trend.
Months without data are left blank.
The most recent periods11 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | 0 | 1 | – |
| March | 0 | 2 | – |
| April | 0 | 0 | – |
| May | 0 | – | – |
| June | – | – | – |
| July | 0 | – | – |
| August | 0 | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | – | – | – |
| December | – | – | – |
| Year to date (Jan–Apr) | 0 | 3 |
according to the US BTS · January 2025 → April 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 98.6% 204
- Cancelled 1.4% 3
Share of all recorded flights in the period, all legs. · Jan 9, 2025 → Apr 13, 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 |
|---|---|---|---|---|
| LAS RNO Harry Reid International Airport – Reno Tahoe International Airport | 556 | 10.2 min | 87.1% | 96 |
| MIA LAS Miami International Airport – Harry Reid International Airport | 3,494 | 6.1 min | 87.3% | 55 |
| MCO FLL Orlando International Airport – Fort Lauderdale Hollywood International Airport | 286 | -0.5 min | 91.4% | 35 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| January 2025 | 23 | 23 | 95.7% | 0 |
| February 2025 | 28 | 28 | 82.1% | 0 |
| March 2025 | 9 | 9 | 77.8% | 0 |
| April 2025 | 13 | 13 | 92.3% | 0 |
| May 2025 | 3 | 3 | 66.7% | 0 |
| July 2025 | 23 | 23 | 87.0% | 0 |
| August 2025 | 12 | 12 | 100.0% | 0 |
| January 2026 | 24 | 24 | 95.8% | 0 |
| February 2026 | 28 | 27 | 81.5% | 1 |
| March 2026 | 31 | 29 | 82.8% | 2 |
| April 2026 | 13 | 13 | 92.3% | 0 |