UA1635
UA1635 (United Airlines) is a multi-stop service on 5 routes, busiest Los Angeles to Dulles. Of 857 departures recorded from October 2024 to July 2026, 83.9% left on time, according to the US BTS.
- On-time departures83.9%of 857 flights
- Average delay10.6 min
- July 202660▲ 25.0%vs July 2025
- Cancelled0.6%
- Legs flown under this number5
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 | 31 | 18 | ▼ 41.9% |
| February | 28 | 23 | ▼ 17.9% |
| March | 55 | 32 | ▼ 41.8% |
| April | 30 | 51 | ▲ 70.0% |
| May | 31 | 70 | ▲ 125.8% |
| June | 34 | 76 | ▲ 123.5% |
| July | 48 | 60 | ▲ 25.0% |
| August | 42 | – | – |
| September | 30 | – | – |
| October | 31 | – | in progress |
| November | 30 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 257 | 330 | ▲ 28.4% |
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 | 77.4% | 88.2% | ▲ 14.0% |
| February | 78.6% | 87.0% | ▲ 10.7% |
| March | 85.5% | 81.3% | ▼ 4.9% |
| April | 96.7% | 96.1% | ▼ 0.6% |
| May | 83.9% | 84.3% | ▲ 0.5% |
| June | 76.5% | 84.0% | ▲ 9.8% |
| July | 62.5% | 75.9% | ▲ 21.4% |
| August | 81.0% | – | – |
| September | 75.9% | – | – |
| October | 96.8% | – | in progress |
| November | 90.0% | – | – |
| December | 83.9% | – | – |
| Year-to-date average (Jan–Jul) | 80.1% | 85.2% | ▲ 6.4% |
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 | 0 | 1 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 1 | – |
| July | 0 | 2 | – |
| August | 0 | – | – |
| September | 1 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 0 | 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 99.4% 852
- Cancelled 0.6% 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
3| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| LAX IAD Los Angeles International Airport – Washington Dulles International Airport | 3,674 | 9.1 min | 85.9% | 606 |
| IAD ATL Washington Dulles International Airport – Hartsfield Jackson Atlanta International Airport | 859 | 13.8 min | 79.1% | 151 |
| IAD ORF Washington Dulles International Airport – Norfolk International Airport | 253 | 23.2 min | 71.4% | 56 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 25 | 25 | 96.0% | 0 |
| November 2024 | 49 | 49 | 87.8% | 0 |
| December 2024 | 32 | 32 | 90.6% | 0 |
| January 2025 | 31 | 31 | 77.4% | 0 |
| February 2025 | 28 | 28 | 78.6% | 0 |
| March 2025 | 55 | 55 | 85.5% | 0 |
| April 2025 | 30 | 30 | 96.7% | 0 |
| May 2025 | 31 | 31 | 83.9% | 0 |
| June 2025 | 34 | 34 | 76.5% | 0 |
| July 2025 | 48 | 48 | 62.5% | 0 |
| August 2025 | 42 | 42 | 81.0% | 0 |
| September 2025 | 30 | 29 | 75.9% | 1 |
| October 2025 | 31 | 31 | 96.8% | 0 |
| November 2025 | 30 | 30 | 90.0% | 0 |
| December 2025 | 31 | 31 | 83.9% | 0 |
| January 2026 | 18 | 17 | 88.2% | 1 |
| February 2026 | 23 | 23 | 87.0% | 0 |
| March 2026 | 32 | 32 | 81.3% | 0 |
| April 2026 | 51 | 51 | 96.1% | 0 |
| May 2026 | 70 | 70 | 84.3% | 0 |
| June 2026 | 76 | 75 | 84.0% | 1 |
| July 2026 | 60 | 58 | 75.9% | 2 |