NK1603
NK1603 (Spirit Airlines) is a multi-stop service on 4 routes, busiest Fort Myers to Chicago. Of 182 departures recorded from September 2025 to April 2026, 60.8% left on time, according to the US BTS.
- On-time departures60.8%of 182 flights
- Average delay30.3 min
- April 202613
- Cancelled6.0%
- Legs flown under this number4
Recorded departures by month
Short series — NK1603 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.
The most recent periods8 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | – | 24 | – |
| February | – | 28 | – |
| March | – | 30 | – |
| April | – | 13 | – |
| May | – | – | – |
| June | – | – | – |
| July | – | – | – |
| August | – | – | – |
| September | 27 | – | – |
| October | 27 | – | in progress |
| November | 30 | – | – |
| December | 3 | – | – |
according to the US BTS · September 2025 → April 2026
On-time departures by month
Short series — NK1603 has only 8 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 periods8 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | – | 54.6% | – |
| February | – | 59.3% | – |
| March | – | 54.2% | – |
| April | – | 41.7% | – |
| May | – | – | – |
| June | – | – | – |
| July | – | – | – |
| August | – | – | – |
| September | 77.8% | – | – |
| October | 88.9% | – | in progress |
| November | 41.4% | – | – |
| December | 33.3% | – | – |
according to the US BTS · September 2025 → April 2026
Average departure delay by month
Short series — NK1603 has only 8 months so far. Enough to show the level now, not enough to read a trend.
according to the US BTS · September 2025 → April 2026
Cancelled departures by month
Short series — NK1603 has only 8 months so far. Enough to show the level now, not enough to read a trend.
The most recent periods8 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | – | 2 | – |
| February | – | 1 | – |
| March | – | 6 | – |
| April | – | 1 | – |
| May | – | – | – |
| June | – | – | – |
| July | – | – | – |
| August | – | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| December | 0 | – | – |
according to the US BTS · September 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 94.0% 171
- Cancelled 6.0% 11
Share of all recorded flights in the period, all legs. · Sep 4, 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 |
|---|---|---|---|---|
| RSW ORD Southwest Florida International Airport – Chicago O'Hare International Airport | 1,807 | 33.3 min | 54.8% | 94 |
| BWI LAS Baltimore/Washington International Thurgood Marshall Airport – Harry Reid International Airport | 3,381 | 4.7 min | 81.8% | 55 |
| IAH LGA George Bush Intercontinental Airport – LaGuardia Airport | 2,277 | 68.3 min | 41.9% | 32 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| September 2025 | 27 | 27 | 77.8% | 0 |
| October 2025 | 27 | 27 | 88.9% | 0 |
| November 2025 | 30 | 29 | 41.4% | 1 |
| December 2025 | 3 | 3 | 33.3% | 0 |
| January 2026 | 24 | 22 | 54.6% | 2 |
| February 2026 | 28 | 27 | 59.3% | 1 |
| March 2026 | 30 | 24 | 54.2% | 6 |
| April 2026 | 13 | 12 | 41.7% | 1 |