UA1688
UA1688 (United Airlines) is a multi-stop service on 19 routes, busiest Dulles to Houston. Of 628 departures recorded from October 2024 to July 2026, 86.8% left on time, according to the US BTS.
- On-time departures86.8%of 628 flights
- Average delay7.0 min
- July 202631
- Cancelled0.8%
- Legs flown under this number19
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods15 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 37 | 23 | ▼ 37.8% |
| February | 32 | 26 | ▼ 18.8% |
| March | 53 | 55 | ▲ 3.8% |
| April | 30 | 48 | ▲ 60.0% |
| May | 16 | 31 | ▲ 93.8% |
| June | – | 30 | – |
| July | – | 31 | – |
| August | – | – | – |
| September | – | – | – |
| October | 6 | – | in progress |
| November | 30 | – | – |
| December | 31 | – | – |
according to the US BTS · October 2024 → July 2026
On-time departures by month
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 periods15 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 94.3% | 73.9% | ▼ 21.6% |
| February | 96.9% | 88.5% | ▼ 8.7% |
| March | 88.7% | 81.8% | ▼ 7.7% |
| April | 96.7% | 85.4% | ▼ 11.6% |
| May | 81.3% | 83.3% | ▲ 2.6% |
| June | – | 90.0% | – |
| July | – | 80.7% | – |
| August | – | – | – |
| September | – | – | – |
| October | 100.0% | – | in progress |
| November | 70.0% | – | – |
| December | 90.0% | – | – |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Months without data are left blank.
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Months without data are left blank.
The most recent periods15 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 2 | 0 | ▼ 100.0% |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 1 | – |
| June | – | 0 | – |
| July | – | 0 | – |
| August | – | – | – |
| September | – | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 1 | – | – |
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 99.2% 623
- Cancelled 0.8% 5
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
7| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| IAD IAH Washington Dulles International Airport – George Bush Intercontinental Airport | 1,913 | 1.6 min | 93.2% | 149 |
| AUS SFO Austin Bergstrom International Airport – San Francisco International Airport | 2,417 | 12.4 min | 84.2% | 76 |
| ORD AUS Chicago O'Hare International Airport – Austin Bergstrom International Airport | 1,574 | 5.4 min | 84.7% | 72 |
| SFO BUR San Francisco International Airport – Hollywood Burbank/Bob Hope Airport | 525 | 9.3 min | 82.9% | 70 |
| MCI SFO Kansas City International Airport – San Francisco International Airport | 2,406 | 17.1 min | 73.0% | 37 |
| IAH MSY George Bush Intercontinental Airport – Louis Armstrong New Orleans International Airport | 489 | 2.3 min | 91.7% | 36 |
| BOS ORD Boston Logan International Airport – Chicago O'Hare International Airport | 1,391 | 0.8 min | 96.9% | 32 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 35 | 35 | 91.4% | 0 |
| November 2024 | 58 | 58 | 91.4% | 0 |
| December 2024 | 56 | 55 | 83.6% | 1 |
| January 2025 | 37 | 35 | 94.3% | 2 |
| February 2025 | 32 | 32 | 96.9% | 0 |
| March 2025 | 53 | 53 | 88.7% | 0 |
| April 2025 | 30 | 30 | 96.7% | 0 |
| May 2025 | 16 | 16 | 81.3% | 0 |
| October 2025 | 6 | 6 | 100.0% | 0 |
| November 2025 | 30 | 30 | 70.0% | 0 |
| December 2025 | 31 | 30 | 90.0% | 1 |
| January 2026 | 23 | 23 | 73.9% | 0 |
| February 2026 | 26 | 26 | 88.5% | 0 |
| March 2026 | 55 | 55 | 81.8% | 0 |
| April 2026 | 48 | 48 | 85.4% | 0 |
| May 2026 | 31 | 30 | 83.3% | 1 |
| June 2026 | 30 | 30 | 90.0% | 0 |
| July 2026 | 31 | 31 | 80.7% | 0 |