NK1639
NK1639 (Spirit Airlines) is a multi-stop service on 5 routes, busiest Reno to Las Vegas. Of 191 departures recorded from January 2025 to April 2026, 85.6% left on time, according to the US BTS.
- On-time departures85.6%of 191 flights
- Average delay9.1 min
- April 202613▲ 0.0%vs April 2025
- Cancelled1.6%
- Legs flown under this number5
Recorded departures by month
Short series — NK1639 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 | 13 | 24 | ▲ 84.6% |
| February | 23 | 28 | ▲ 21.7% |
| March | 9 | 31 | ▲ 244.4% |
| April | 13 | 13 | 0.0% |
| May | 2 | – | – |
| June | – | – | – |
| July | 23 | – | – |
| August | 12 | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | – | – | – |
| December | – | – | – |
| Year to date (Jan–Apr) | 58 | 96 | ▲ 65.5% |
according to the US BTS · January 2025 → April 2026
On-time departures by month
Short series — NK1639 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 | 92.3% | 95.8% | ▲ 3.8% |
| February | 95.7% | 85.2% | ▼ 10.9% |
| March | 88.9% | 69.0% | ▼ 22.4% |
| April | 84.6% | 69.2% | ▼ 18.2% |
| May | 50.0% | – | – |
| June | – | – | – |
| July | 91.3% | – | – |
| August | 91.7% | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | – | – | – |
| December | – | – | – |
| Year-to-date average (Jan–Apr) | 90.4% | 79.8% | ▼ 11.7% |
according to the US BTS · January 2025 → April 2026
Average departure delay by month
Short series — NK1639 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 — NK1639 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 98.4% 188
- Cancelled 1.6% 3
Share of all recorded flights in the period, all legs. · Jan 10, 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 |
|---|---|---|---|---|
| RNO LAS Reno Tahoe International Airport – Harry Reid International Airport | 556 | 9.2 min | 80.7% | 96 |
| LAS SMF Harry Reid International Airport – Sacramento International Airport | 639 | -4.7 min | 95.0% | 40 |
| FLL MCO Fort Lauderdale Hollywood International Airport – Orlando International Airport | 286 | -0.0 min | 91.4% | 35 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| January 2025 | 13 | 13 | 92.3% | 0 |
| February 2025 | 23 | 23 | 95.7% | 0 |
| March 2025 | 9 | 9 | 88.9% | 0 |
| April 2025 | 13 | 13 | 84.6% | 0 |
| May 2025 | 2 | 2 | 50.0% | 0 |
| July 2025 | 23 | 23 | 91.3% | 0 |
| August 2025 | 12 | 12 | 91.7% | 0 |
| January 2026 | 24 | 24 | 95.8% | 0 |
| February 2026 | 28 | 27 | 85.2% | 1 |
| March 2026 | 31 | 29 | 69.0% | 2 |
| April 2026 | 13 | 13 | 69.2% | 0 |