UA617
UA617 (United Airlines) is a multi-stop service on 13 routes, busiest Denver to Chicago. Of 1,107 departures recorded from October 2024 to July 2026, 78.5% left on time, according to the US BTS.
- On-time departures78.5%of 1,107 flights
- Average delay18.9 min
- July 202631▼ 49.2%vs July 2025
- Cancelled1.3%
- Legs flown under this number13
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 | 59 | 31 | ▼ 47.5% |
| February | 68 | 28 | ▼ 58.8% |
| March | 86 | 31 | ▼ 64.0% |
| April | 37 | 32 | ▼ 13.5% |
| May | 93 | 71 | ▼ 23.7% |
| June | 85 | 30 | ▼ 64.7% |
| July | 61 | 31 | ▼ 49.2% |
| August | 62 | – | – |
| September | 59 | – | – |
| October | 52 | – | in progress |
| November | 30 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 489 | 254 | ▼ 48.1% |
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 | 73.7% | 80.7% | ▲ 9.5% |
| February | 80.6% | 85.7% | ▲ 6.3% |
| March | 83.5% | 74.2% | ▼ 11.2% |
| April | 86.5% | 84.4% | ▼ 2.4% |
| May | 83.7% | 84.3% | ▲ 0.7% |
| June | 77.7% | 60.0% | ▼ 22.7% |
| July | 63.3% | 73.3% | ▲ 15.8% |
| August | 68.9% | – | – |
| September | 84.8% | – | – |
| October | 80.0% | – | in progress |
| November | 75.9% | – | – |
| December | 76.7% | – | – |
| Year-to-date average (Jan–Jul) | 78.4% | 77.5% | ▼ 1.2% |
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 | 2 | 0 | ▼ 100.0% |
| February | 1 | 0 | ▼ 100.0% |
| March | 1 | 0 | ▼ 100.0% |
| April | 0 | 0 | – |
| May | 1 | 1 | 0.0% |
| June | 0 | 0 | – |
| July | 1 | 1 | 0.0% |
| August | 1 | – | – |
| September | 0 | – | – |
| October | 2 | – | in progress |
| November | 1 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 6 | 2 | ▼ 66.7% |
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 98.7% 1,093
- Cancelled 1.3% 14
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
88 of 8
| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| DEN ORD Denver International Airport – Chicago O'Hare International Airport | 1,426 | 18.7 min | 80.6% | 657 |
| SLC DEN Salt Lake City International Airport – Denver International Airport | 628 | 3.1 min | 85.3% | 95 |
| ORD JAX Chicago O'Hare International Airport – Jacksonville International Airport | 1,393 | 25.3 min | 80.7% | 58 |
| SEA DEN Seattle–Tacoma International Airport – Denver International Airport | 1,645 | 7.5 min | 85.5% | 56 |
| ORD CLT Chicago O'Hare International Airport – Charlotte Douglas International Airport | 965 | 49.5 min | 56.6% | 53 |
| ORD DSM Chicago O'Hare International Airport – Des Moines International Airport | 480 | 21.7 min | 68.2% | 45 |
| ORD CHS Chicago O'Hare International Airport – Charleston International Airport | 1,224 | 12.7 min | 80.6% | 36 |
| ORD ATL Chicago O'Hare International Airport – Hartsfield Jackson Atlanta International Airport | 976 | 16.0 min | 68.6% | 35 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 40 | 40 | 85.0% | 0 |
| November 2024 | 30 | 30 | 76.7% | 0 |
| December 2024 | 60 | 59 | 78.0% | 1 |
| January 2025 | 59 | 57 | 73.7% | 2 |
| February 2025 | 68 | 67 | 80.6% | 1 |
| March 2025 | 86 | 85 | 83.5% | 1 |
| April 2025 | 37 | 37 | 86.5% | 0 |
| May 2025 | 93 | 92 | 83.7% | 1 |
| June 2025 | 85 | 85 | 77.7% | 0 |
| July 2025 | 61 | 60 | 63.3% | 1 |
| August 2025 | 62 | 61 | 68.9% | 1 |
| September 2025 | 59 | 59 | 84.8% | 0 |
| October 2025 | 52 | 50 | 80.0% | 2 |
| November 2025 | 30 | 29 | 75.9% | 1 |
| December 2025 | 31 | 30 | 76.7% | 1 |
| January 2026 | 31 | 31 | 80.7% | 0 |
| February 2026 | 28 | 28 | 85.7% | 0 |
| March 2026 | 31 | 31 | 74.2% | 0 |
| April 2026 | 32 | 32 | 84.4% | 0 |
| May 2026 | 71 | 70 | 84.3% | 1 |
| June 2026 | 30 | 30 | 60.0% | 0 |
| July 2026 | 31 | 30 | 73.3% | 1 |