NK1643
NK1643 (Spirit Airlines) is a multi-stop service on 3 routes, busiest Detroit to Las Vegas. Of 132 departures recorded from January 2025 to March 2026, 81.1% left on time, according to the US BTS.
- On-time departures81.1%of 132 flights
- Average delay9.6 min
- March 202611▲ 175.0%vs March 2025
- Cancelled0.0%
- Legs flown under this number3
Recorded departures by month
Short series — NK1643 has only 8 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 periods8 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 23 | 24 | ▲ 4.3% |
| February | 27 | 28 | ▲ 3.7% |
| March | 4 | 11 | ▲ 175.0% |
| April | – | – | – |
| May | – | – | – |
| June | – | – | – |
| July | 10 | – | – |
| August | 5 | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | – | – | – |
| December | – | – | – |
| Year to date (Jan–Mar) | 54 | 63 | ▲ 16.7% |
according to the US BTS · January 2025 → March 2026
On-time departures by month
Short series — NK1643 has only 8 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 periods8 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 82.6% | 87.5% | ▲ 5.9% |
| February | 96.3% | 67.9% | ▼ 29.5% |
| March | 100.0% | 72.7% | ▼ 27.3% |
| April | – | – | – |
| May | – | – | – |
| June | – | – | – |
| July | 60.0% | – | – |
| August | 80.0% | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | – | – | – |
| December | – | – | – |
| Year-to-date average (Jan–Mar) | 93.0% | 76.0% | ▼ 18.2% |
according to the US BTS · January 2025 → March 2026
Average departure delay by month
Short series — NK1643 has only 8 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 → March 2026
Cancelled departures by month
Short series — NK1643 has only 8 months so far. Enough to show the level now, not enough to read a trend.
Months without data are left blank.
The most recent periods8 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | – | – | – |
| May | – | – | – |
| June | – | – | – |
| July | 0 | – | – |
| August | 0 | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | – | – | – |
| December | – | – | – |
| Year to date (Jan–Mar) | 0 | 0 |
according to the US BTS · January 2025 → March 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 100.0% 132
- Cancelled 0.0% 0
Share of all recorded flights in the period, all legs. · Jan 9, 2025 → Mar 11, 2026
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 |
|---|---|---|---|---|
| DTW LAS Detroit Metropolitan Wayne County Airport – Harry Reid International Airport | 2,808 | 14.9 min | 76.2% | 63 |
| LAS MIA Harry Reid International Airport – Miami International Airport | 3,494 | 1.4 min | 90.7% | 54 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| January 2025 | 23 | 23 | 82.6% | 0 |
| February 2025 | 27 | 27 | 96.3% | 0 |
| March 2025 | 4 | 4 | 100.0% | 0 |
| July 2025 | 10 | 10 | 60.0% | 0 |
| August 2025 | 5 | 5 | 80.0% | 0 |
| January 2026 | 24 | 24 | 87.5% | 0 |
| February 2026 | 28 | 28 | 67.9% | 0 |
| March 2026 | 11 | 11 | 72.7% | 0 |