NK615
NK615 (Spirit Airlines) is a multi-stop service on 5 routes, busiest Boston to Baltimore. Of 96 departures recorded from February 2025 to May 2026, 63.8% left on time, according to the US BTS.
- On-time departures63.8%of 96 flights
- Average delay28.7 min
- May 20261▼ 75.0%vs May 2025
- Cancelled2.1%
- Legs flown under this number5
Recorded departures by month
Short series — NK615 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 | – | – | – |
| February | 12 | – | – |
| March | 22 | – | – |
| April | 20 | 13 | ▼ 35.0% |
| May | 4 | 1 | ▼ 75.0% |
| June | – | – | – |
| July | – | – | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 21 | – | – |
| December | 3 | – | – |
according to the US BTS · February 2025 → May 2026
On-time departures by month
Short series — NK615 has only 7 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 periods7 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | – | – | – |
| February | 83.3% | – | – |
| March | 68.2% | – | – |
| April | 60.0% | 30.8% | ▼ 48.7% |
| May | 33.3% | – | – |
| June | – | – | – |
| July | – | – | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 81.0% | – | – |
| December | 33.3% | – | – |
according to the US BTS · February 2025 → April 2026
Average departure delay by month
Short series — NK615 has only 7 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 · February 2025 → April 2026
Cancelled departures by month
Short series — NK615 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 | – | – | – |
| February | 0 | – | – |
| March | 0 | – | – |
| April | 0 | 0 | – |
| May | 1 | 1 | 0.0% |
| June | – | – | – |
| July | – | – | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
according to the US BTS · February 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 97.9% 94
- Cancelled 2.1% 2
Share of all recorded flights in the period, all legs. · Feb 13, 2025 → May 1, 2026
Legs flown under this number
1| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| BOS BWI Boston Logan International Airport – Baltimore/Washington International Thurgood Marshall Airport | 594 | 16.9 min | 64.3% | 43 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| February 2025 | 12 | 12 | 83.3% | 0 |
| March 2025 | 22 | 22 | 68.2% | 0 |
| April 2025 | 20 | 20 | 60.0% | 0 |
| May 2025 | 4 | 3 | 33.3% | 1 |
| November 2025 | 21 | 21 | 81.0% | 0 |
| December 2025 | 3 | 3 | 33.3% | 0 |
| April 2026 | 13 | 13 | 30.8% | 0 |
| May 2026 | 1 | 0 | — | 1 |