UA1977
UA1977 (United Airlines) is a multi-stop service on 8 routes, busiest Houston to Boston. Of 685 departures recorded from October 2024 to July 2026, 88.7% left on time, according to the US BTS.
- On-time departures88.7%of 685 flights
- Average delay5.2 min
- July 202630▼ 3.2%vs July 2025
- Cancelled1.5%
- Legs flown under this number8
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 | 50 | 31 | ▼ 38.0% |
| February | 36 | 27 | ▼ 25.0% |
| March | 31 | 31 | 0.0% |
| April | 30 | 30 | 0.0% |
| May | 44 | 31 | ▼ 29.5% |
| June | 30 | 29 | ▼ 3.3% |
| July | 31 | 30 | ▼ 3.2% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 31 | – | in progress |
| November | 29 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 252 | 209 | ▼ 17.1% |
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 | 85.1% | 90.0% | ▲ 5.7% |
| February | 88.9% | 92.0% | ▲ 3.5% |
| March | 83.9% | 100.0% | ▲ 19.2% |
| April | 90.0% | 86.7% | ▼ 3.7% |
| May | 78.6% | 93.6% | ▲ 19.1% |
| June | 86.7% | 96.6% | ▲ 11.4% |
| July | 93.6% | 86.2% | ▼ 7.8% |
| August | 90.3% | – | – |
| September | 93.3% | – | – |
| October | 96.8% | – | in progress |
| November | 89.7% | – | – |
| December | 93.6% | – | – |
| Year-to-date average (Jan–Jul) | 86.7% | 92.1% | ▲ 6.3% |
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 | 3 | 1 | ▼ 66.7% |
| February | 0 | 2 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 2 | 0 | ▼ 100.0% |
| June | 0 | 0 | – |
| July | 0 | 1 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 5 | 4 | ▼ 20.0% |
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 98.5% 675
- Cancelled 1.5% 10
Share of all recorded flights in the period, all legs. · Oct 13, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
4| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| IAH BOS George Bush Intercontinental Airport – Boston Logan International Airport | 2,567 | 0.3 min | 91.8% | 530 |
| BOS EWR Boston Logan International Airport – Newark Liberty International Airport | 322 | 38.1 min | 72.4% | 61 |
| EWR DTW Newark Liberty International Airport – Detroit Metropolitan Wayne County Airport | 784 | 11.3 min | 83.9% | 32 |
| EWR DJT Newark Liberty International Airport – President Donald J. Trump International Airport | 1,650 | 17.4 min | 74.2% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 17 | 16 | 81.3% | 1 |
| November 2024 | 24 | 24 | 70.8% | 0 |
| December 2024 | 31 | 31 | 83.9% | 0 |
| January 2025 | 50 | 47 | 85.1% | 3 |
| February 2025 | 36 | 36 | 88.9% | 0 |
| March 2025 | 31 | 31 | 83.9% | 0 |
| April 2025 | 30 | 30 | 90.0% | 0 |
| May 2025 | 44 | 42 | 78.6% | 2 |
| June 2025 | 30 | 30 | 86.7% | 0 |
| July 2025 | 31 | 31 | 93.6% | 0 |
| August 2025 | 31 | 31 | 90.3% | 0 |
| September 2025 | 30 | 30 | 93.3% | 0 |
| October 2025 | 31 | 31 | 96.8% | 0 |
| November 2025 | 29 | 29 | 89.7% | 0 |
| December 2025 | 31 | 31 | 93.6% | 0 |
| January 2026 | 31 | 30 | 90.0% | 1 |
| February 2026 | 27 | 25 | 92.0% | 2 |
| March 2026 | 31 | 31 | 100.0% | 0 |
| April 2026 | 30 | 30 | 86.7% | 0 |
| May 2026 | 31 | 31 | 93.6% | 0 |
| June 2026 | 29 | 29 | 96.6% | 0 |
| July 2026 | 30 | 29 | 86.2% | 1 |