UA1634
UA1634 (United Airlines) is a multi-stop service on 19 routes, busiest Dallas-Fort Worth to Chicago. Of 1,001 departures recorded from October 2024 to July 2026, 82.4% left on time, according to the US BTS.
- On-time departures82.4%of 1,001 flights
- Average delay13.9 min
- July 202627▼ 56.5%vs July 2025
- Cancelled0.7%
- Legs flown under this number19
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 | 34 | ▲ 9.7% |
| February | 42 | 25 | ▼ 40.5% |
| March | 56 | 51 | ▼ 8.9% |
| April | 56 | 52 | ▼ 7.1% |
| May | 66 | 28 | ▼ 57.6% |
| June | 74 | 29 | ▼ 60.8% |
| July | 62 | 27 | ▼ 56.5% |
| August | 62 | – | – |
| September | 60 | – | – |
| October | 62 | – | in progress |
| November | 55 | – | – |
| December | 45 | – | – |
| Year to date (Jan–Jul) | 387 | 246 | ▼ 36.4% |
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 | 80.7% | 65.6% | ▼ 18.6% |
| February | 85.7% | 80.0% | ▼ 6.7% |
| March | 85.7% | 80.0% | ▼ 6.7% |
| April | 91.1% | 86.5% | ▼ 5.0% |
| May | 84.9% | 82.1% | ▼ 3.2% |
| June | 82.4% | 75.9% | ▼ 8.0% |
| July | 66.1% | 70.4% | ▲ 6.4% |
| August | 86.9% | – | – |
| September | 81.7% | – | – |
| October | 90.2% | – | in progress |
| November | 81.8% | – | – |
| December | 72.7% | – | – |
| Year-to-date average (Jan–Jul) | 82.4% | 77.2% | ▼ 6.2% |
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 | 0 | – |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 1 | – | – |
| September | 0 | – | – |
| October | 1 | – | in progress |
| November | 0 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 0 | 3 |
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% 994
- Cancelled 0.7% 7
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 |
|---|---|---|---|---|
| DFW ORD Dallas Fort Worth International Airport – Chicago O'Hare International Airport | 1,291 | 10.2 min | 86.9% | 415 |
| ORD TPA Chicago O'Hare International Airport – Tampa International Airport | 1,631 | 8.1 min | 84.2% | 114 |
| ORD PHL Chicago O'Hare International Airport – Philadelphia International Airport | 1,088 | 18.4 min | 70.8% | 91 |
| ORD IAD Chicago O'Hare International Airport – Washington Dulles International Airport | 945 | 21.9 min | 71.9% | 89 |
| ORD SMF Chicago O'Hare International Airport – Sacramento International Airport | 2,860 | 17.3 min | 78.3% | 46 |
| ORD MCI Chicago O'Hare International Airport – Kansas City International Airport | 647 | 37.2 min | 75.0% | 32 |
| ORD BDL Chicago O'Hare International Airport – Bradley International Airport | 1,257 | 4.7 min | 87.1% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 29 | 29 | 100.0% | 0 |
| November 2024 | 24 | 24 | 91.7% | 0 |
| December 2024 | 31 | 30 | 86.7% | 1 |
| January 2025 | 31 | 31 | 80.7% | 0 |
| February 2025 | 42 | 42 | 85.7% | 0 |
| March 2025 | 56 | 56 | 85.7% | 0 |
| April 2025 | 56 | 56 | 91.1% | 0 |
| May 2025 | 66 | 66 | 84.9% | 0 |
| June 2025 | 74 | 74 | 82.4% | 0 |
| July 2025 | 62 | 62 | 66.1% | 0 |
| August 2025 | 62 | 61 | 86.9% | 1 |
| September 2025 | 60 | 60 | 81.7% | 0 |
| October 2025 | 62 | 61 | 90.2% | 1 |
| November 2025 | 55 | 55 | 81.8% | 0 |
| December 2025 | 45 | 44 | 72.7% | 1 |
| January 2026 | 34 | 32 | 65.6% | 2 |
| February 2026 | 25 | 25 | 80.0% | 0 |
| March 2026 | 51 | 50 | 80.0% | 1 |
| April 2026 | 52 | 52 | 86.5% | 0 |
| May 2026 | 28 | 28 | 82.1% | 0 |
| June 2026 | 29 | 29 | 75.9% | 0 |
| July 2026 | 27 | 27 | 70.4% | 0 |