UA635
UA635 (United Airlines) is a multi-stop service on 21 routes, busiest Hartford to Dulles. Of 788 departures recorded from October 2024 to July 2026, 90.8% left on time, according to the US BTS.
- On-time departures90.8%of 788 flights
- Average delay2.0 min
- July 202629▲ 93.3%vs July 2025
- Cancelled1.0%
- Legs flown under this number21
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 | 28 | 31 | ▲ 10.7% |
| February | 26 | 45 | ▲ 73.1% |
| March | 31 | 56 | ▲ 80.6% |
| April | 30 | 53 | ▲ 76.7% |
| May | 29 | 89 | ▲ 206.9% |
| June | 23 | 67 | ▲ 191.3% |
| July | 15 | 29 | ▲ 93.3% |
| August | 40 | – | – |
| September | 50 | – | – |
| October | 31 | – | in progress |
| November | 30 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 182 | 370 | ▲ 103.3% |
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 | 85.7% | 93.1% | ▲ 8.6% |
| February | 100.0% | 97.7% | ▼ 2.3% |
| March | 100.0% | 91.1% | ▼ 8.9% |
| April | 96.7% | 92.5% | ▼ 4.4% |
| May | 96.6% | 82.0% | ▼ 15.0% |
| June | 100.0% | 89.4% | ▼ 10.6% |
| July | 53.3% | 93.1% | ▲ 74.6% |
| August | 92.1% | – | – |
| September | 88.0% | – | – |
| October | 96.8% | – | in progress |
| November | 96.7% | – | – |
| December | 100.0% | – | – |
| Year-to-date average (Jan–Jul) | 90.3% | 91.3% | ▲ 1.0% |
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 | 2 | – |
| February | 0 | 2 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 1 | – |
| July | 0 | 0 | – |
| August | 2 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 0 | 5 |
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 99.0% 780
- Cancelled 1.0% 8
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
6| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| BDL IAD Bradley International Airport – Washington Dulles International Airport | 523 | -2.9 min | 96.8% | 442 |
| IAD SFO Washington Dulles International Airport – San Francisco International Airport | 3,883 | 6.5 min | 89.0% | 73 |
| MSY DEN Louis Armstrong New Orleans International Airport – Denver International Airport | 1,708 | 5.3 min | 82.0% | 50 |
| IAD ABQ Washington Dulles International Airport – Albuquerque International Sunport | 2,614 | 17.8 min | 81.1% | 37 |
| IAD CLE Washington Dulles International Airport – Cleveland Hopkins International Airport | 463 | 0.2 min | 93.8% | 32 |
| DCA SFO Ronald Reagan Washington National Airport – San Francisco International Airport | 3,921 | -3.7 min | 96.9% | 32 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 75.0% | 0 |
| November 2024 | 3 | 3 | 66.7% | 0 |
| December 2024 | 31 | 31 | 83.9% | 0 |
| January 2025 | 28 | 28 | 85.7% | 0 |
| February 2025 | 26 | 26 | 100.0% | 0 |
| March 2025 | 31 | 31 | 100.0% | 0 |
| April 2025 | 30 | 30 | 96.7% | 0 |
| May 2025 | 29 | 29 | 96.6% | 0 |
| June 2025 | 23 | 23 | 100.0% | 0 |
| July 2025 | 15 | 15 | 53.3% | 0 |
| August 2025 | 40 | 38 | 92.1% | 2 |
| September 2025 | 50 | 50 | 88.0% | 0 |
| October 2025 | 31 | 31 | 96.8% | 0 |
| November 2025 | 30 | 30 | 96.7% | 0 |
| December 2025 | 31 | 30 | 100.0% | 1 |
| January 2026 | 31 | 29 | 93.1% | 2 |
| February 2026 | 45 | 43 | 97.7% | 2 |
| March 2026 | 56 | 56 | 91.1% | 0 |
| April 2026 | 53 | 53 | 92.5% | 0 |
| May 2026 | 89 | 89 | 82.0% | 0 |
| June 2026 | 67 | 66 | 89.4% | 1 |
| July 2026 | 29 | 29 | 93.1% | 0 |