OO3599
OO3599 (SkyWest Airlines) is a multi-stop service on 4 routes, busiest Buffalo to Detroit. Of 202 departures recorded from May 2025 to May 2026, 86.5% left on time, according to the US BTS.
- On-time departures86.5%of 202 flights
- Average delay7.4 min
- May 20266▼ 76.0%vs May 2025
- Cancelled1.0%
- Legs flown under this number4
Recorded departures by month
Short series — OO3599 has only 7 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 periods7 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | – | – | – |
| February | – | – | – |
| March | – | – | – |
| April | – | 18 | – |
| May | 25 | 6 | ▼ 76.0% |
| June | 7 | – | – |
| July | – | – | – |
| August | – | – | – |
| September | – | – | – |
| October | 52 | – | in progress |
| November | 60 | – | – |
| December | 34 | – | – |
according to the US BTS · May 2025 → May 2026
On-time departures by month
Short series — OO3599 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 | – | – | – |
| March | – | – | – |
| April | – | 100.0% | – |
| May | 80.0% | 100.0% | ▲ 25.0% |
| June | 100.0% | – | – |
| July | – | – | – |
| August | – | – | – |
| September | – | – | – |
| October | 86.5% | – | in progress |
| November | 91.7% | – | – |
| December | 68.8% | – | – |
according to the US BTS · May 2025 → May 2026
Average departure delay by month
Short series — OO3599 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 · May 2025 → May 2026
Cancelled departures by month
Short series — OO3599 has only 7 months so far. Enough to show the level now, not enough to read a trend.
Months without data are left blank.
The most recent periods7 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | – | – | – |
| February | – | – | – |
| March | – | – | – |
| April | – | 0 | – |
| May | 0 | 0 | – |
| June | 0 | – | – |
| July | – | – | – |
| August | – | – | – |
| September | – | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 2 | – | – |
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 99.0% 200
- Cancelled 1.0% 2
Share of all recorded flights in the period, all legs. · May 7, 2025 → May 6, 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 |
|---|---|---|---|---|
| DTW BUF Detroit Metropolitan Wayne County Airport – Buffalo Niagara International Airport | 387 | 8.7 min | 86.1% | 73 |
| BUF DTW Buffalo Niagara International Airport – Detroit Metropolitan Wayne County Airport | 387 | 13.4 min | 83.3% | 73 |
| CLE DTW Cleveland Hopkins International Airport – Detroit Metropolitan Wayne County Airport | 153 | 2.7 min | 84.4% | 32 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| May 2025 | 25 | 25 | 80.0% | 0 |
| June 2025 | 7 | 7 | 100.0% | 0 |
| October 2025 | 52 | 52 | 86.5% | 0 |
| November 2025 | 60 | 60 | 91.7% | 0 |
| December 2025 | 34 | 32 | 68.8% | 2 |
| April 2026 | 18 | 18 | 100.0% | 0 |
| May 2026 | 6 | 6 | 100.0% | 0 |