NK1904
NK1904 (Spirit Airlines) is a multi-stop service on 2 routes, busiest Houston to Miami. Of 103 departures recorded from October 2024 to October 2025, 73.8% left on time, according to the US BTS.
- On-time departures73.8%of 103 flights
- Average delay18.3 min
- October 20259▼ 55.0%vs October 2024
- Cancelled0.0%
- Legs flown under this number2
Recorded departures by month
Short series — NK1904 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.
Months without data are left blank.
The most recent periods6 periods
| Period | Departures 2024 | Departures 2025 | Change vs last year |
|---|---|---|---|
| January | – | 7 | – |
| February | – | – | – |
| March | – | – | – |
| April | – | – | – |
| May | – | – | – |
| June | – | – | – |
| July | – | – | – |
| August | – | – | – |
| September | – | 8 | – |
| October | 20 | 9 | ▼ 55.0% |
| November | 30 | – | – |
| December | 29 | – | – |
according to the US BTS · October 2024 → October 2025
On-time departures by month
Short series — NK1904 has only 6 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 periods6 periods
| Period | On time 2024 | On time 2025 | Change vs last year |
|---|---|---|---|
| January | – | 57.1% | – |
| February | – | – | – |
| March | – | – | – |
| April | – | – | – |
| May | – | – | – |
| June | – | – | – |
| July | – | – | – |
| August | – | – | – |
| September | – | 62.5% | – |
| October | 95.0% | 55.6% | ▼ 41.5% |
| November | 80.0% | – | – |
| December | 65.5% | – | – |
according to the US BTS · October 2024 → October 2025
Average departure delay by month
Short series — NK1904 has only 6 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 · October 2024 → October 2025
Cancelled departures by month
Short series — NK1904 has only 6 months so far. Enough to show the level now, not enough to read a trend.
Months without data are left blank.
The most recent periods6 periods
| Period | Cancelled 2024 | Cancelled 2025 | Change vs last year |
|---|---|---|---|
| January | – | 0 | – |
| February | – | – | – |
| March | – | – | – |
| April | – | – | – |
| May | – | – | – |
| June | – | – | – |
| July | – | – | – |
| August | – | – | – |
| September | – | 0 | – |
| October | 0 | 0 | – |
| November | 0 | – | – |
| December | 0 | – | – |
according to the US BTS · October 2024 → October 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 100.0% 103
- Cancelled 0.0% 0
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Oct 30, 2025
Legs flown under this number
1| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| IAH MIA George Bush Intercontinental Airport – Miami International Airport | 1,549 | 14.2 min | 76.7% | 86 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 95.0% | 0 |
| November 2024 | 30 | 30 | 80.0% | 0 |
| December 2024 | 29 | 29 | 65.5% | 0 |
| January 2025 | 7 | 7 | 57.1% | 0 |
| September 2025 | 8 | 8 | 62.5% | 0 |
| October 2025 | 9 | 9 | 55.6% | 0 |