NK638
NK638 (Spirit Airlines) is a multi-stop service on 3 routes, busiest Pittsburgh to Fort Myers. Of 111 departures recorded from December 2024 to May 2025, 74.6% left on time, according to the US BTS.
- On-time departures74.6%of 111 flights
- Average delay12.2 min
- May 20256
- Cancelled0.9%
- Legs flown under this number3
Recorded departures by month
Short series — NK638 has only 6 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.
The most recent periods6 periods
| Period | Departures 2024 | Departures 2025 | Change vs last year |
|---|---|---|---|
| January | – | 8 | – |
| February | – | 15 | – |
| March | – | 30 | – |
| April | – | 30 | – |
| May | – | 6 | – |
| June | – | – | – |
| July | – | – | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | – |
| November | – | – | – |
| December | 22 | – | – |
according to the US BTS · December 2024 → May 2025
On-time departures by month
Short series — NK638 has only 6 months so far. Enough to show the level now, not enough to read a trend.
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods6 periods
| Period | On time 2024 | On time 2025 | Change vs last year |
|---|---|---|---|
| January | – | 75.0% | – |
| February | – | 73.3% | – |
| March | – | 65.5% | – |
| April | – | 80.0% | – |
| May | – | 83.3% | – |
| June | – | – | – |
| July | – | – | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | – |
| November | – | – | – |
| December | 77.3% | – | – |
according to the US BTS · December 2024 → May 2025
Average departure delay by month
Short series — NK638 has only 6 months so far. Enough to show the level now, not enough to read a trend.
according to the US BTS · December 2024 → May 2025
Cancelled departures by month
Short series — NK638 has only 6 months so far. Enough to show the level now, not enough to read a trend.
The most recent periods6 periods
| Period | Cancelled 2024 | Cancelled 2025 | Change vs last year |
|---|---|---|---|
| January | – | 0 | – |
| February | – | 0 | – |
| March | – | 1 | – |
| April | – | 0 | – |
| May | – | 0 | – |
| June | – | – | – |
| July | – | – | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | – |
| November | – | – | – |
| December | 0 | – | – |
according to the US BTS · December 2024 → May 2025
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 99.1% 110
- Cancelled 0.9% 1
Share of all recorded flights in the period, all legs. · Dec 5, 2024 → May 6, 2025
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 |
|---|---|---|---|---|
| PIT RSW Pittsburgh International Airport – Southwest Florida International Airport | 1,558 | 10.6 min | 74.2% | 63 |
| PIT FLL Pittsburgh International Airport – Fort Lauderdale Hollywood International Airport | 1,603 | 16.8 min | 76.7% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| December 2024 | 22 | 22 | 77.3% | 0 |
| January 2025 | 8 | 8 | 75.0% | 0 |
| February 2025 | 15 | 15 | 73.3% | 0 |
| March 2025 | 30 | 29 | 65.5% | 1 |
| April 2025 | 30 | 30 | 80.0% | 0 |
| May 2025 | 6 | 6 | 83.3% | 0 |