UA2604
UA2604 (United Airlines) is a multi-stop service on 10 routes, busiest Colorado Springs to Denver. Of 195 departures recorded from January 2025 to May 2026, 86.0% left on time, according to the US BTS.
- On-time departures86.0%of 195 flights
- Average delay5.0 min
- May 202620▼ 4.8%vs May 2025
- Cancelled1.0%
- Legs flown under this number10
Recorded departures by month
Short series — UA2604 has only 11 months so far. Enough to show the level now, not enough to read a trend.
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods11 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 22 | 18 | ▼ 18.2% |
| February | 26 | 24 | ▼ 7.7% |
| March | 7 | 5 | ▼ 28.6% |
| April | 30 | 21 | ▼ 30.0% |
| May | 21 | 20 | ▼ 4.8% |
| June | – | – | – |
| July | – | – | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | – | – | – |
| December | 1 | – | – |
| Year to date (Jan–May) | 106 | 88 | ▼ 17.0% |
according to the US BTS · January 2025 → May 2026
On-time departures by month
Short series — UA2604 has only 11 months so far. Enough to show the level now, not enough to read a trend.
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 periods11 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 95.5% | 100.0% | ▲ 4.8% |
| February | 88.5% | 83.3% | ▼ 5.8% |
| March | 71.4% | 100.0% | ▲ 40.0% |
| April | 90.0% | 81.0% | ▼ 10.1% |
| May | 70.0% | 80.0% | ▲ 14.3% |
| June | – | – | – |
| July | – | – | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | – | – | – |
| December | 100.0% | – | – |
| Year-to-date average (Jan–May) | 83.1% | 88.9% | ▲ 7.0% |
according to the US BTS · January 2025 → May 2026
Average departure delay by month
Short series — UA2604 has only 11 months so far. Enough to show the level now, not enough to read a trend.
Months without data are left blank.
according to the US BTS · January 2025 → May 2026
Cancelled departures by month
Short series — UA2604 has only 11 months so far. Enough to show the level now, not enough to read a trend.
Months without data are left blank.
The most recent periods11 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 1 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 1 | 0 | ▼ 100.0% |
| June | – | – | – |
| July | – | – | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | – | – | – |
| December | 0 | – | – |
| Year to date (Jan–May) | 1 | 1 | 0.0% |
according to the US BTS · January 2025 → May 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% 193
- Cancelled 1.0% 2
Share of all recorded flights in the period, all legs. · Jan 7, 2025 → May 20, 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 |
|---|---|---|---|---|
| COS DEN City of Colorado Springs Municipal Airport – Denver International Airport | 117 | 11.1 min | 78.4% | 37 |
| ORD LGA Chicago O'Hare International Airport – LaGuardia Airport | 1,177 | -5.4 min | 96.9% | 32 |
| LAS DEN Harry Reid International Airport – Denver International Airport | 1,009 | -2.1 min | 90.6% | 32 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| January 2025 | 22 | 22 | 95.5% | 0 |
| February 2025 | 26 | 26 | 88.5% | 0 |
| March 2025 | 7 | 7 | 71.4% | 0 |
| April 2025 | 30 | 30 | 90.0% | 0 |
| May 2025 | 21 | 20 | 70.0% | 1 |
| December 2025 | 1 | 1 | 100.0% | 0 |
| January 2026 | 18 | 17 | 100.0% | 1 |
| February 2026 | 24 | 24 | 83.3% | 0 |
| March 2026 | 5 | 5 | 100.0% | 0 |
| April 2026 | 21 | 21 | 81.0% | 0 |
| May 2026 | 20 | 20 | 80.0% | 0 |