NK2151
NK2151 (Spirit Airlines) is a multi-stop service on 3 routes, busiest Boston to Detroit. Of 114 departures recorded from May 2025 to May 2026, 78.1% left on time, according to the US BTS.
- On-time departures78.1%of 114 flights
- Average delay9.8 min
- May 20261▼ 85.7%vs May 2025
- Cancelled0.0%
- Legs flown under this number3
Recorded departures by month
Short series — NK2151 has only 9 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 periods9 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | – | – | – |
| February | – | – | – |
| March | – | – | – |
| April | – | 11 | – |
| May | 7 | 1 | ▼ 85.7% |
| June | 11 | – | – |
| July | 3 | – | – |
| August | 19 | – | – |
| September | 30 | – | – |
| October | 31 | – | in progress |
| November | 1 | – | – |
| December | – | – | – |
according to the US BTS · May 2025 → May 2026
On-time departures by month
Short series — NK2151 has only 9 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 periods9 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | – | – | – |
| February | – | – | – |
| March | – | – | – |
| April | – | 72.7% | – |
| May | 14.3% | 100.0% | ▲ 599.8% |
| June | 36.4% | – | – |
| July | 66.7% | – | – |
| August | 89.5% | – | – |
| September | 86.7% | – | – |
| October | 93.6% | – | in progress |
| November | 100.0% | – | – |
| December | – | – | – |
according to the US BTS · May 2025 → May 2026
Average departure delay by month
Short series — NK2151 has only 9 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 · May 2025 → May 2026
Cancelled departures by month
Short series — NK2151 has only 9 months so far. Enough to show the level now, not enough to read a trend.
Months without data are left blank.
The most recent periods9 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | – | – | – |
| February | – | – | – |
| March | – | – | – |
| April | – | 0 | – |
| May | 0 | 0 | – |
| June | 0 | – | – |
| July | 0 | – | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | – | – | – |
according to the US BTS · May 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 100.0% 114
- Cancelled 0.0% 0
Share of all recorded flights in the period, all legs. · May 9, 2025 → May 1, 2026
Legs flown under this number
1| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| BOS DTW Boston Logan International Airport – Detroit Metropolitan Wayne County Airport | 1,015 | 0.2 min | 90.1% | 81 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| May 2025 | 7 | 7 | 14.3% | 0 |
| June 2025 | 11 | 11 | 36.4% | 0 |
| July 2025 | 3 | 3 | 66.7% | 0 |
| August 2025 | 19 | 19 | 89.5% | 0 |
| September 2025 | 30 | 30 | 86.7% | 0 |
| October 2025 | 31 | 31 | 93.6% | 0 |
| November 2025 | 1 | 1 | 100.0% | 0 |
| April 2026 | 11 | 11 | 72.7% | 0 |
| May 2026 | 1 | 1 | 100.0% | 0 |