UA1678
UA1678 (United Airlines) is a multi-stop service on 6 routes, busiest San Francisco to Washington. Of 841 departures recorded from October 2024 to July 2026, 90.3% left on time, according to the US BTS.
- On-time departures90.3%of 841 flights
- Average delay4.3 min
- July 202657▲ 83.9%vs July 2025
- Cancelled0.6%
- Legs flown under this number6
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 | 54 | ▲ 74.2% |
| February | 28 | 51 | ▲ 82.1% |
| March | 31 | 58 | ▲ 87.1% |
| April | 30 | 56 | ▲ 86.7% |
| May | 31 | 57 | ▲ 83.9% |
| June | 30 | 35 | ▲ 16.7% |
| July | 31 | 57 | ▲ 83.9% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 31 | – | in progress |
| November | 30 | – | – |
| December | 58 | – | – |
| Year to date (Jan–Jul) | 212 | 368 | ▲ 73.6% |
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 | 93.6% | 98.1% | ▲ 4.9% |
| February | 71.4% | 92.2% | ▲ 29.0% |
| March | 90.3% | 84.5% | ▼ 6.5% |
| April | 100.0% | 85.7% | ▼ 14.3% |
| May | 96.8% | 87.7% | ▼ 9.4% |
| June | 86.7% | 94.1% | ▲ 8.6% |
| July | 93.1% | 76.8% | ▼ 17.5% |
| August | 96.8% | – | – |
| September | 93.3% | – | – |
| October | 90.3% | – | in progress |
| November | 96.7% | – | – |
| December | 93.1% | – | – |
| Year-to-date average (Jan–Jul) | 90.3% | 88.4% | ▼ 2.0% |
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 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 1 | – |
| July | 2 | 1 | ▼ 50.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 2 | 3 | ▲ 50.0% |
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 99.4% 836
- 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
4| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SFO DCA San Francisco International Airport – Ronald Reagan Washington National Airport | 3,921 | 0.5 min | 93.0% | 588 |
| DCA IAH Ronald Reagan Washington National Airport – George Bush Intercontinental Airport | 1,942 | 34.4 min | 68.9% | 107 |
| PHX SFO Phoenix Sky Harbor International Airport – San Francisco International Airport | 1,047 | -5.9 min | 98.7% | 78 |
| ORD BTV Chicago O'Hare International Airport – Patrick Leahy Burlington International Airport | 1,225 | 7.5 min | 86.5% | 37 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 100.0% | 0 |
| November 2024 | 30 | 30 | 83.3% | 0 |
| December 2024 | 31 | 31 | 96.8% | 0 |
| January 2025 | 31 | 31 | 93.6% | 0 |
| February 2025 | 28 | 28 | 71.4% | 0 |
| March 2025 | 31 | 31 | 90.3% | 0 |
| April 2025 | 30 | 30 | 100.0% | 0 |
| May 2025 | 31 | 31 | 96.8% | 0 |
| June 2025 | 30 | 30 | 86.7% | 0 |
| July 2025 | 31 | 29 | 93.1% | 2 |
| August 2025 | 31 | 31 | 96.8% | 0 |
| September 2025 | 30 | 30 | 93.3% | 0 |
| October 2025 | 31 | 31 | 90.3% | 0 |
| November 2025 | 30 | 30 | 96.7% | 0 |
| December 2025 | 58 | 58 | 93.1% | 0 |
| January 2026 | 54 | 53 | 98.1% | 1 |
| February 2026 | 51 | 51 | 92.2% | 0 |
| March 2026 | 58 | 58 | 84.5% | 0 |
| April 2026 | 56 | 56 | 85.7% | 0 |
| May 2026 | 57 | 57 | 87.7% | 0 |
| June 2026 | 35 | 34 | 94.1% | 1 |
| July 2026 | 57 | 56 | 76.8% | 1 |