UA1728
UA1728 (United Airlines) is a multi-stop service on 10 routes, busiest Dulles to Denver. Of 883 departures recorded from October 2024 to July 2026, 80.3% left on time, according to the US BTS.
- On-time departures80.3%of 883 flights
- Average delay14.5 min
- July 202631▲ 0.0%vs July 2025
- Cancelled0.6%
- Legs flown under this number10
according to the US BTS · Oct 12, 2024 → Jul 31, 2026 domestic flights only
Recorded departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
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 | 27 | ▼ 3.6% |
| February | 42 | 27 | ▼ 35.7% |
| March | 62 | 34 | ▼ 45.2% |
| April | 60 | 60 | 0.0% |
| May | 62 | 50 | ▼ 19.4% |
| June | 55 | 30 | ▼ 45.5% |
| July | 31 | 31 | 0.0% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 31 | – | in progress |
| November | 30 | – | – |
| December | 29 | – | – |
| Year to date (Jan–Jul) | 340 | 259 | ▼ 23.8% |
according to the US BTS · October 2024 → July 2026
On-time departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
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% | 88.5% | ▲ 3.2% |
| February | 75.6% | 80.0% | ▲ 5.8% |
| March | 80.7% | 82.4% | ▲ 2.1% |
| April | 80.0% | 91.7% | ▲ 14.6% |
| May | 75.8% | 84.0% | ▲ 10.8% |
| June | 78.2% | 70.0% | ▼ 10.5% |
| July | 54.8% | 74.2% | ▲ 35.3% |
| August | 71.0% | – | – |
| September | 86.7% | – | – |
| October | 80.0% | – | in progress |
| November | 93.3% | – | – |
| December | 86.2% | – | – |
| Year-to-date average (Jan–Jul) | 75.8% | 81.5% | ▲ 7.5% |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Partial coverage: domestic flights only · 22 of 22 periods have data
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 1 | – |
| February | 1 | 2 | ▲ 100.0% |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 1 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 1 | 3 | ▲ 200.0% |
according to the US BTS · October 2024 → July 2026
This is not a forecast
This is a historical record of departures already flown, not a forecast for your flight.
This number flies several legs
Several legs: the headline figure averages all of them. See the leg table.
Cancellation share
- Not cancelled 99.4% 878
- 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
99 of 9
| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| IAD DEN Washington Dulles International Airport – Denver International Airport | 2,332 | 30.3 min | 67.0% | 224 |
| ELP DEN El Paso International Airport – Denver International Airport | 908 | 16.1 min | 81.9% | 149 |
| RSW IAD Southwest Florida International Airport – Washington Dulles International Airport | 1,437 | 0.3 min | 91.7% | 133 |
| EWR BNA Newark Liberty International Airport – Nashville International Airport | 1,201 | 5.6 min | 86.0% | 101 |
| SFO DFW San Francisco International Airport – Dallas Fort Worth International Airport | 2,352 | 15.5 min | 78.2% | 87 |
| SNA SFO John Wayne Orange County International Airport – San Francisco International Airport | 598 | 12.9 min | 82.7% | 52 |
| DEN MKE Denver International Airport – General Mitchell International Airport | 1,438 | 7.4 min | 84.6% | 52 |
| PIT IAD Pittsburgh International Airport – Washington Dulles International Airport | 293 | 1.7 min | 87.1% | 32 |
| DCA ORD Ronald Reagan Washington National Airport – Chicago O'Hare International Airport | 983 | 2.1 min | 90.3% | 32 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 40 | 40 | 80.0% | 0 |
| November 2024 | 60 | 60 | 81.7% | 0 |
| December 2024 | 33 | 33 | 81.8% | 0 |
| January 2025 | 28 | 28 | 85.7% | 0 |
| February 2025 | 42 | 41 | 75.6% | 1 |
| March 2025 | 62 | 62 | 80.7% | 0 |
| April 2025 | 60 | 60 | 80.0% | 0 |
| May 2025 | 62 | 62 | 75.8% | 0 |
| June 2025 | 55 | 55 | 78.2% | 0 |
| July 2025 | 31 | 31 | 54.8% | 0 |
| August 2025 | 31 | 31 | 71.0% | 0 |
| September 2025 | 30 | 30 | 86.7% | 0 |
| October 2025 | 31 | 30 | 80.0% | 1 |
| November 2025 | 30 | 30 | 93.3% | 0 |
| December 2025 | 29 | 29 | 86.2% | 0 |
| January 2026 | 27 | 26 | 88.5% | 1 |
| February 2026 | 27 | 25 | 80.0% | 2 |
| March 2026 | 34 | 34 | 82.4% | 0 |
| April 2026 | 60 | 60 | 91.7% | 0 |
| May 2026 | 50 | 50 | 84.0% | 0 |
| June 2026 | 30 | 30 | 70.0% | 0 |
| July 2026 | 31 | 31 | 74.2% | 0 |