UA1549
UA1549 (United Airlines) flies Houston to Dulles. Of 568 departures recorded from October 2024 to July 2026, 94.7% left on time, according to the US BTS.
Recorded departures by month
Months without data are left blank.
The most recent periods17 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 31 | 31 | 0.0% |
| February | 28 | 27 | ▼ 3.6% |
| March | 31 | 31 | 0.0% |
| April | 30 | 30 | 0.0% |
| May | 21 | 31 | ▲ 47.6% |
| June | – | 30 | – |
| July | – | 31 | – |
| August | 13 | – | – |
| September | 30 | – | – |
| October | 31 | – | 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 periods17 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 80.0% | 96.7% | ▲ 20.8% |
| February | 100.0% | 96.3% | ▼ 3.7% |
| March | 100.0% | 90.3% | ▼ 9.7% |
| April | 93.3% | 100.0% | ▲ 7.1% |
| May | 100.0% | 93.3% | ▼ 6.7% |
| June | – | 100.0% | – |
| July | – | 83.9% | – |
| August | 100.0% | – | – |
| September | 100.0% | – | – |
| October | 93.6% | – | in progress |
| November | 96.7% | – | – |
| December | 90.3% | – | – |
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 periods17 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 1 | 1 | 0.0% |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 1 | – |
| June | – | 0 | – |
| July | – | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
according to the US BTS · October 2024 → July 2026
This is a historical record of departures already flown, not a forecast for your flight.
Cancellation share
- Not cancelled 99.5% 565
- Cancelled 0.5% 3
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 31, 2026
Legs flown under this number
1| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| IAH IAD George Bush Intercontinental Airport – Washington Dulles International Airport | 1,913 | 1.7 min | 94.7% | 568 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 95.0% | 0 |
| November 2024 | 30 | 30 | 93.3% | 0 |
| December 2024 | 31 | 31 | 96.8% | 0 |
| January 2025 | 31 | 30 | 80.0% | 1 |
| February 2025 | 28 | 28 | 100.0% | 0 |
| March 2025 | 31 | 31 | 100.0% | 0 |
| April 2025 | 30 | 30 | 93.3% | 0 |
| May 2025 | 21 | 21 | 100.0% | 0 |
| August 2025 | 13 | 13 | 100.0% | 0 |
| September 2025 | 30 | 30 | 100.0% | 0 |
| October 2025 | 31 | 31 | 93.6% | 0 |
| November 2025 | 30 | 30 | 96.7% | 0 |
| December 2025 | 31 | 31 | 90.3% | 0 |
| January 2026 | 31 | 30 | 96.7% | 1 |
| February 2026 | 27 | 27 | 96.3% | 0 |
| March 2026 | 31 | 31 | 90.3% | 0 |
| April 2026 | 30 | 30 | 100.0% | 0 |
| May 2026 | 31 | 30 | 93.3% | 1 |
| June 2026 | 30 | 30 | 100.0% | 0 |
| July 2026 | 31 | 31 | 83.9% | 0 |