UA1677
UA1677 (United Airlines) is a multi-stop service on 16 routes, busiest Chicago to Boston. Of 649 departures recorded from October 2024 to July 2026, 70.0% left on time, according to the US BTS.
- On-time departures70.0%of 649 flights
- Average delay23.3 min
- July 202631▲ 0.0%vs July 2025
- Cancelled1.5%
- Legs flown under this number16
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 | 26 | 14 | ▼ 46.2% |
| February | 44 | 16 | ▼ 63.6% |
| March | 60 | 29 | ▼ 51.7% |
| April | 30 | 21 | ▼ 30.0% |
| May | 31 | 31 | 0.0% |
| June | 30 | 30 | 0.0% |
| July | 31 | 31 | 0.0% |
| August | 28 | – | – |
| September | 47 | – | – |
| October | 30 | – | in progress |
| November | 23 | – | – |
| December | 17 | – | – |
| Year to date (Jan–Jul) | 252 | 172 | ▼ 31.7% |
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 | 92.3% | 46.2% | ▼ 50.0% |
| February | 93.2% | 57.1% | ▼ 38.7% |
| March | 85.0% | 72.4% | ▼ 14.8% |
| April | 80.0% | 66.7% | ▼ 16.7% |
| May | 64.5% | 80.7% | ▲ 25.0% |
| June | 53.3% | 78.6% | ▲ 47.3% |
| July | 33.3% | 60.0% | ▲ 80.0% |
| August | 67.9% | – | – |
| September | 30.4% | – | – |
| October | 76.7% | – | in progress |
| November | 68.2% | – | – |
| December | 70.6% | – | – |
| Year-to-date average (Jan–Jul) | 71.7% | 65.9% | ▼ 8.0% |
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 | 1 | – |
| February | 0 | 2 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 2 | – |
| July | 1 | 1 | 0.0% |
| August | 0 | – | – |
| September | 1 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 1 | 6 | ▲ 500.0% |
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% 639
- Cancelled 1.5% 10
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 |
|---|---|---|---|---|
| ORD BOS Chicago O'Hare International Airport – Boston Logan International Airport | 1,391 | 42.1 min | 52.1% | 218 |
| ORD LGA Chicago O'Hare International Airport – LaGuardia Airport | 1,177 | 4.9 min | 87.8% | 82 |
| ORD PDX Chicago O'Hare International Airport – Portland International Airport | 2,792 | 40.4 min | 64.0% | 51 |
| IAH ORD George Bush Intercontinental Airport – Chicago O'Hare International Airport | 1,491 | 2.3 min | 91.1% | 45 |
| SFO ABQ San Francisco International Airport – Albuquerque International Sunport | 1,439 | 21.6 min | 72.2% | 37 |
| IAD SAT Washington Dulles International Airport – San Antonio International Airport | 2,189 | 12.0 min | 81.3% | 32 |
| DEN MSP Denver International Airport – Minneapolis–Saint Paul International Airport / Wold–Chamberlain Field | 1,092 | 6.8 min | 77.4% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 32 | 32 | 84.4% | 0 |
| November 2024 | 30 | 29 | 72.4% | 1 |
| December 2024 | 18 | 18 | 88.9% | 0 |
| January 2025 | 26 | 26 | 92.3% | 0 |
| February 2025 | 44 | 44 | 93.2% | 0 |
| March 2025 | 60 | 60 | 85.0% | 0 |
| April 2025 | 30 | 30 | 80.0% | 0 |
| May 2025 | 31 | 31 | 64.5% | 0 |
| June 2025 | 30 | 30 | 53.3% | 0 |
| July 2025 | 31 | 30 | 33.3% | 1 |
| August 2025 | 28 | 28 | 67.9% | 0 |
| September 2025 | 47 | 46 | 30.4% | 1 |
| October 2025 | 30 | 30 | 76.7% | 0 |
| November 2025 | 23 | 22 | 68.2% | 1 |
| December 2025 | 17 | 17 | 70.6% | 0 |
| January 2026 | 14 | 13 | 46.2% | 1 |
| February 2026 | 16 | 14 | 57.1% | 2 |
| March 2026 | 29 | 29 | 72.4% | 0 |
| April 2026 | 21 | 21 | 66.7% | 0 |
| May 2026 | 31 | 31 | 80.7% | 0 |
| June 2026 | 30 | 28 | 78.6% | 2 |
| July 2026 | 31 | 30 | 60.0% | 1 |