UA1620
UA1620 (United Airlines) is a multi-stop service on 17 routes, busiest Chicago to Seattle. Of 868 departures recorded from October 2024 to July 2026, 85.5% left on time, according to the US BTS.
- On-time departures85.5%of 868 flights
- Average delay7.0 min
- July 202631▼ 42.6%vs July 2025
- Cancelled0.6%
- Legs flown under this number17
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 | 37 | 31 | ▼ 16.2% |
| February | 28 | 27 | ▼ 3.6% |
| March | 57 | 31 | ▼ 45.6% |
| April | 60 | 30 | ▼ 50.0% |
| May | 38 | 31 | ▼ 18.4% |
| June | 51 | 30 | ▼ 41.2% |
| July | 54 | 31 | ▼ 42.6% |
| August | 56 | – | – |
| September | 76 | – | – |
| October | 31 | – | in progress |
| November | 30 | – | – |
| December | 45 | – | – |
| Year to date (Jan–Jul) | 325 | 211 | ▼ 35.1% |
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 | 91.9% | 77.4% | ▼ 15.7% |
| February | 89.3% | 96.3% | ▲ 7.9% |
| March | 77.2% | 67.7% | ▼ 12.2% |
| April | 91.4% | 86.7% | ▼ 5.2% |
| May | 79.0% | 74.2% | ▼ 6.0% |
| June | 90.2% | 86.7% | ▼ 3.9% |
| July | 96.3% | 79.3% | ▼ 17.6% |
| August | 89.3% | – | – |
| September | 90.8% | – | – |
| October | 100.0% | – | in progress |
| November | 86.7% | – | – |
| December | 59.1% | – | – |
| Year-to-date average (Jan–Jul) | 87.9% | 81.2% | ▼ 7.6% |
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 | 0 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 2 | 0 | ▼ 100.0% |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 2 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 2 | 2 | 0.0% |
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 99.4% 863
- Cancelled 0.6% 5
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 |
|---|---|---|---|---|
| ORD SEA Chicago O'Hare International Airport – Seattle–Tacoma International Airport | 2,762 | 5.9 min | 91.4% | 197 |
| SEA SFO Seattle–Tacoma International Airport – San Francisco International Airport | 1,093 | 6.8 min | 82.0% | 173 |
| ORD MIA Chicago O'Hare International Airport – Miami International Airport | 1,930 | 13.1 min | 78.2% | 149 |
| ORD SJC Chicago O'Hare International Airport – Mineta San Jose International Airport | 2,937 | 2.4 min | 88.2% | 68 |
| IAD MCO Washington Dulles International Airport – Orlando International Airport | 1,222 | -1.2 min | 94.6% | 37 |
| SFO RDU San Francisco International Airport – Raleigh-Durham International Airport | 3,853 | -1.8 min | 94.3% | 35 |
| SFO EWR San Francisco International Airport – Newark Liberty International Airport | 4,118 | -0.1 min | 87.1% | 32 |
| ATL IAH Hartsfield Jackson Atlanta International Airport – George Bush Intercontinental Airport | 1,108 | -1.1 min | 96.8% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 90.0% | 0 |
| November 2024 | 30 | 30 | 86.7% | 0 |
| December 2024 | 44 | 44 | 88.6% | 0 |
| January 2025 | 37 | 37 | 91.9% | 0 |
| February 2025 | 28 | 28 | 89.3% | 0 |
| March 2025 | 57 | 57 | 77.2% | 0 |
| April 2025 | 60 | 58 | 91.4% | 2 |
| May 2025 | 38 | 38 | 79.0% | 0 |
| June 2025 | 51 | 51 | 90.2% | 0 |
| July 2025 | 54 | 54 | 96.3% | 0 |
| August 2025 | 56 | 56 | 89.3% | 0 |
| September 2025 | 76 | 76 | 90.8% | 0 |
| October 2025 | 31 | 31 | 100.0% | 0 |
| November 2025 | 30 | 30 | 86.7% | 0 |
| December 2025 | 45 | 44 | 59.1% | 1 |
| January 2026 | 31 | 31 | 77.4% | 0 |
| February 2026 | 27 | 27 | 96.3% | 0 |
| March 2026 | 31 | 31 | 67.7% | 0 |
| April 2026 | 30 | 30 | 86.7% | 0 |
| May 2026 | 31 | 31 | 74.2% | 0 |
| June 2026 | 30 | 30 | 86.7% | 0 |
| July 2026 | 31 | 29 | 79.3% | 2 |