NK1631
NK1631 (Spirit Airlines) is a multi-stop service on 4 routes, busiest Santa Ana to Las Vegas. Of 172 departures recorded from January 2025 to May 2026, 81.1% left on time, according to the US BTS.
- On-time departures81.1%of 172 flights
- Average delay9.0 min
- May 20261
- Cancelled1.7%
- Legs flown under this number4
Recorded departures by month
Short series — NK1631 has only 10 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 periods10 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 13 | 24 | ▲ 84.6% |
| February | 16 | 28 | ▲ 75.0% |
| March | 2 | 31 | ▲ 1,450.0% |
| April | – | 22 | – |
| May | – | 1 | – |
| June | – | – | – |
| July | 23 | – | – |
| August | 12 | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | – | – | – |
| December | – | – | – |
according to the US BTS · January 2025 → May 2026
On-time departures by month
Short series — NK1631 has only 10 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 periods10 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 91.7% | 95.8% | ▲ 4.5% |
| February | 75.0% | 85.2% | ▲ 13.6% |
| March | 50.0% | 83.3% | ▲ 66.7% |
| April | – | 63.6% | – |
| May | – | 100.0% | – |
| June | – | – | – |
| July | 69.6% | – | – |
| August | 91.7% | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | – | – | – |
| December | – | – | – |
according to the US BTS · January 2025 → May 2026
Average departure delay by month
Short series — NK1631 has only 10 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 → May 2026
Cancelled departures by month
Short series — NK1631 has only 10 months so far. Enough to show the level now, not enough to read a trend.
Months without data are left blank.
The most recent periods10 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 1 | 0 | ▼ 100.0% |
| February | 0 | 1 | – |
| March | 0 | 1 | – |
| April | – | 0 | – |
| May | – | 0 | – |
| June | – | – | – |
| July | 0 | – | – |
| August | 0 | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | – | – | – |
| December | – | – | – |
according to the US BTS · January 2025 → May 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 98.3% 169
- Cancelled 1.7% 3
Share of all recorded flights in the period, all legs. · Jan 10, 2025 → May 1, 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 |
|---|---|---|---|---|
| SNA LAS John Wayne Orange County International Airport – Harry Reid International Airport | 365 | 4.0 min | 86.2% | 96 |
| IAH FLL George Bush Intercontinental Airport – Fort Lauderdale Hollywood International Airport | 1,552 | 17.1 min | 77.1% | 35 |
| IAH SJU George Bush Intercontinental Airport – Luis Munoz Marin International Airport | 3,228 | 9.8 min | 80.0% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| January 2025 | 13 | 12 | 91.7% | 1 |
| February 2025 | 16 | 16 | 75.0% | 0 |
| March 2025 | 2 | 2 | 50.0% | 0 |
| July 2025 | 23 | 23 | 69.6% | 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 | 30 | 83.3% | 1 |
| April 2026 | 22 | 22 | 63.6% | 0 |
| May 2026 | 1 | 1 | 100.0% | 0 |