UA688
UA688 (United Airlines) is a multi-stop service on 12 routes, busiest Dulles to Boston. Of 1,167 departures recorded from October 2024 to July 2026, 77.0% left on time, according to the US BTS.
- On-time departures77.0%of 1,167 flights
- Average delay20.6 min
- July 202662▼ 32.6%vs July 2025
- Cancelled2.2%
- Legs flown under this number12
Recorded departures by month
All legs under this number combined; see the leg table.
The most recent periods19 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 60 | 66 | ▲ 10.0% |
| February | 56 | 39 | ▼ 30.4% |
| March | 36 | 34 | ▼ 5.6% |
| April | 30 | 60 | ▲ 100.0% |
| May | 56 | 61 | ▲ 8.9% |
| June | 65 | 60 | ▼ 7.7% |
| July | 92 | 62 | ▼ 32.6% |
| August | 62 | – | – |
| September | 42 | – | – |
| October | 62 | – | in progress |
| November | 60 | – | – |
| December | 58 | – | – |
| Year to date (Jan–Jul) | 395 | 382 | ▼ 3.3% |
according to the US BTS · October 2024 → July 2026
On-time departures by month
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods19 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 77.6% | 88.7% | ▲ 14.3% |
| February | 91.1% | 86.1% | ▼ 5.4% |
| March | 80.6% | 81.3% | ▲ 0.9% |
| April | 76.7% | 73.3% | ▼ 4.4% |
| May | 66.1% | 83.6% | ▲ 26.5% |
| June | 58.5% | 79.7% | ▲ 36.3% |
| July | 58.6% | 86.7% | ▲ 47.9% |
| August | 80.7% | – | – |
| September | 53.7% | – | – |
| October | 73.8% | – | in progress |
| November | 81.0% | – | – |
| December | 77.2% | – | – |
| Year-to-date average (Jan–Jul) | 72.7% | 82.8% | ▲ 13.8% |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 2 | 4 | ▲ 100.0% |
| February | 0 | 3 | – |
| March | 0 | 2 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 1 | – |
| July | 5 | 2 | ▼ 60.0% |
| August | 0 | – | – |
| September | 1 | – | – |
| October | 1 | – | in progress |
| November | 2 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 7 | 12 | ▲ 71.4% |
according to the US BTS · October 2024 → July 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 97.8% 1,141
- Cancelled 2.2% 26
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
9Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 19 | 94.7% | 1 |
| November 2024 | 30 | 30 | 83.3% | 0 |
| December 2024 | 56 | 55 | 85.5% | 1 |
| January 2025 | 60 | 58 | 77.6% | 2 |
| February 2025 | 56 | 56 | 91.1% | 0 |
| March 2025 | 36 | 36 | 80.6% | 0 |
| April 2025 | 30 | 30 | 76.7% | 0 |
| May 2025 | 56 | 56 | 66.1% | 0 |
| June 2025 | 65 | 65 | 58.5% | 0 |
| July 2025 | 92 | 87 | 58.6% | 5 |
| August 2025 | 62 | 62 | 80.7% | 0 |
| September 2025 | 42 | 41 | 53.7% | 1 |
| October 2025 | 62 | 61 | 73.8% | 1 |
| November 2025 | 60 | 58 | 81.0% | 2 |
| December 2025 | 58 | 57 | 77.2% | 1 |
| January 2026 | 66 | 62 | 88.7% | 4 |
| February 2026 | 39 | 36 | 86.1% | 3 |
| March 2026 | 34 | 32 | 81.3% | 2 |
| April 2026 | 60 | 60 | 73.3% | 0 |
| May 2026 | 61 | 61 | 83.6% | 0 |
| June 2026 | 60 | 59 | 79.7% | 1 |
| July 2026 | 62 | 60 | 86.7% | 2 |