UA204
UA204 (United Airlines) is a multi-stop service on 18 routes, busiest Denver to Seattle. Of 703 departures recorded from October 2024 to July 2026, 86.8% left on time, according to the US BTS.
- On-time departures86.8%of 703 flights
- Average delay6.6 min
- July 202631▲ 0.0%vs July 2025
- Cancelled0.7%
- Legs flown under this number18
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 | 31 | 0.0% |
| February | 28 | 32 | ▲ 14.3% |
| March | 33 | 33 | 0.0% |
| April | 60 | 30 | ▼ 50.0% |
| May | 31 | 31 | 0.0% |
| June | 55 | 30 | ▼ 45.5% |
| July | 31 | 31 | 0.0% |
| August | 28 | – | – |
| September | 30 | – | – |
| October | 28 | – | in progress |
| November | 23 | – | – |
| December | 26 | – | – |
| Year to date (Jan–Jul) | 269 | 218 | ▼ 19.0% |
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 | 87.1% | 83.9% | ▼ 3.7% |
| February | 85.7% | 80.7% | ▼ 5.9% |
| March | 93.9% | 93.8% | ▼ 0.2% |
| April | 90.0% | 96.7% | ▲ 7.4% |
| May | 83.9% | 86.7% | ▲ 3.3% |
| June | 81.8% | 86.7% | ▲ 5.9% |
| July | 87.1% | 86.7% | ▼ 0.5% |
| August | 89.3% | – | – |
| September | 96.6% | – | – |
| October | 85.7% | – | in progress |
| November | 91.3% | – | – |
| December | 88.5% | – | – |
| Year-to-date average (Jan–Jul) | 87.1% | 87.9% | ▲ 0.9% |
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 | 0 | – |
| February | 0 | 1 | – |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 1 | – |
| June | 0 | 0 | – |
| July | 0 | 1 | – |
| 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 99.3% 698
- Cancelled 0.7% 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 |
|---|---|---|---|---|
| DEN SEA Denver International Airport – Seattle–Tacoma International Airport | 1,645 | 1.5 min | 89.7% | 203 |
| FLL DEN Fort Lauderdale Hollywood International Airport – Denver International Airport | 2,739 | 3.7 min | 88.3% | 121 |
| ABQ IAD Albuquerque International Sunport – Washington Dulles International Airport | 2,614 | 19.5 min | 87.1% | 72 |
| DEN PHX Denver International Airport – Phoenix Sky Harbor International Airport | 968 | 6.9 min | 90.6% | 65 |
| EWR SFO Newark Liberty International Airport – San Francisco International Airport | 4,118 | 20.1 min | 66.7% | 36 |
| SEA SFO Seattle–Tacoma International Airport – San Francisco International Airport | 1,093 | 18.3 min | 78.1% | 32 |
| BWI IAH Baltimore/Washington International Thurgood Marshall Airport – George Bush Intercontinental Airport | 1,986 | -2.7 min | 96.9% | 32 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 80.0% | 0 |
| November 2024 | 30 | 30 | 66.7% | 0 |
| December 2024 | 31 | 31 | 87.1% | 0 |
| January 2025 | 31 | 31 | 87.1% | 0 |
| February 2025 | 28 | 28 | 85.7% | 0 |
| March 2025 | 33 | 33 | 93.9% | 0 |
| April 2025 | 60 | 60 | 90.0% | 0 |
| May 2025 | 31 | 31 | 83.9% | 0 |
| June 2025 | 55 | 55 | 81.8% | 0 |
| July 2025 | 31 | 31 | 87.1% | 0 |
| August 2025 | 28 | 28 | 89.3% | 0 |
| September 2025 | 30 | 29 | 96.6% | 1 |
| October 2025 | 28 | 28 | 85.7% | 0 |
| November 2025 | 23 | 23 | 91.3% | 0 |
| December 2025 | 26 | 26 | 88.5% | 0 |
| January 2026 | 31 | 31 | 83.9% | 0 |
| February 2026 | 32 | 31 | 80.7% | 1 |
| March 2026 | 33 | 32 | 93.8% | 1 |
| April 2026 | 30 | 30 | 96.7% | 0 |
| May 2026 | 31 | 30 | 86.7% | 1 |
| June 2026 | 30 | 30 | 86.7% | 0 |
| July 2026 | 31 | 30 | 86.7% | 1 |