UA2603
UA2603 (United Airlines) is a multi-stop service on 14 routes, busiest San Francisco to Seattle. Of 769 departures recorded from October 2024 to July 2026, 84.3% left on time, according to the US BTS.
- On-time departures84.3%of 769 flights
- Average delay7.3 min
- July 202631▲ 0.0%vs July 2025
- Cancelled1.4%
- Legs flown under this number14
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 | 37 | 5 | ▼ 86.5% |
| February | 44 | 32 | ▼ 27.3% |
| March | 58 | 59 | ▲ 1.7% |
| April | 60 | 30 | ▼ 50.0% |
| May | 56 | 30 | ▼ 46.4% |
| June | 30 | 30 | 0.0% |
| July | 31 | 31 | 0.0% |
| August | 43 | – | – |
| September | 26 | – | – |
| October | 27 | – | in progress |
| November | 23 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 316 | 217 | ▼ 31.3% |
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 | 78.4% | 80.0% | ▲ 2.1% |
| February | 75.0% | 96.4% | ▲ 28.6% |
| March | 84.5% | 84.2% | ▼ 0.3% |
| April | 84.8% | 100.0% | ▲ 18.0% |
| May | 91.1% | 96.7% | ▲ 6.1% |
| June | 86.7% | 96.7% | ▲ 11.5% |
| July | 51.6% | 96.7% | ▲ 87.3% |
| August | 70.7% | – | – |
| September | 80.8% | – | – |
| October | 81.5% | – | in progress |
| November | 95.7% | – | – |
| December | 87.1% | – | – |
| Year-to-date average (Jan–Jul) | 78.9% | 93.0% | ▲ 17.9% |
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 | 0 | – |
| February | 0 | 4 | – |
| March | 0 | 2 | – |
| April | 1 | 0 | ▼ 100.0% |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 1 | – |
| August | 2 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 1 | 7 | ▲ 600.0% |
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 98.6% 758
- Cancelled 1.4% 11
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
6| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SFO SEA San Francisco International Airport – Seattle–Tacoma International Airport | 1,093 | 10.5 min | 81.7% | 192 |
| FLL EWR Fort Lauderdale Hollywood International Airport – Newark Liberty International Airport | 1,717 | -1.0 min | 94.4% | 148 |
| LAX SFO Los Angeles International Airport – San Francisco International Airport | 543 | 5.2 min | 85.7% | 113 |
| DEN SNA Denver International Airport – John Wayne Orange County International Airport | 1,360 | 3.1 min | 86.2% | 87 |
| EWR BOS Newark Liberty International Airport – Boston Logan International Airport | 322 | 4.1 min | 86.4% | 61 |
| DEN LGA Denver International Airport – LaGuardia Airport | 2,600 | 27.2 min | 63.0% | 54 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 95.0% | 0 |
| November 2024 | 24 | 23 | 87.0% | 1 |
| December 2024 | 42 | 42 | 69.1% | 0 |
| January 2025 | 37 | 37 | 78.4% | 0 |
| February 2025 | 44 | 44 | 75.0% | 0 |
| March 2025 | 58 | 58 | 84.5% | 0 |
| April 2025 | 60 | 59 | 84.8% | 1 |
| May 2025 | 56 | 56 | 91.1% | 0 |
| June 2025 | 30 | 30 | 86.7% | 0 |
| July 2025 | 31 | 31 | 51.6% | 0 |
| August 2025 | 43 | 41 | 70.7% | 2 |
| September 2025 | 26 | 26 | 80.8% | 0 |
| October 2025 | 27 | 27 | 81.5% | 0 |
| November 2025 | 23 | 23 | 95.7% | 0 |
| December 2025 | 31 | 31 | 87.1% | 0 |
| January 2026 | 5 | 5 | 80.0% | 0 |
| February 2026 | 32 | 28 | 96.4% | 4 |
| March 2026 | 59 | 57 | 84.2% | 2 |
| April 2026 | 30 | 30 | 100.0% | 0 |
| May 2026 | 30 | 30 | 96.7% | 0 |
| June 2026 | 30 | 30 | 96.7% | 0 |
| July 2026 | 31 | 30 | 96.7% | 1 |