UA1603
UA1603 (United Airlines) is a multi-stop service on 10 routes, busiest San Francisco to Indianapolis. Of 846 departures recorded from October 2024 to July 2026, 77.6% left on time, according to the US BTS.
- On-time departures77.6%of 846 flights
- Average delay12.3 min
- July 202661▲ 7.0%vs July 2025
- Cancelled0.5%
- Legs flown under this number10
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 | 51 | 31 | ▼ 39.2% |
| February | 34 | 36 | ▲ 5.9% |
| March | 31 | 51 | ▲ 64.5% |
| April | 25 | 56 | ▲ 124.0% |
| May | 25 | 51 | ▲ 104.0% |
| June | 34 | 61 | ▲ 79.4% |
| July | 57 | 61 | ▲ 7.0% |
| August | 44 | – | – |
| September | 54 | – | – |
| October | 18 | – | in progress |
| November | 20 | – | – |
| December | 25 | – | – |
| Year to date (Jan–Jul) | 257 | 347 | ▲ 35.0% |
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 | 88.2% | 67.7% | ▼ 23.2% |
| February | 88.2% | 83.3% | ▼ 5.6% |
| March | 93.6% | 84.3% | ▼ 9.9% |
| April | 79.2% | 73.2% | ▼ 7.5% |
| May | 87.5% | 66.0% | ▼ 24.6% |
| June | 79.4% | 62.3% | ▼ 21.5% |
| July | 73.7% | 60.7% | ▼ 17.7% |
| August | 79.6% | – | – |
| September | 83.3% | – | – |
| October | 83.3% | – | in progress |
| November | 85.0% | – | – |
| December | 64.0% | – | – |
| Year-to-date average (Jan–Jul) | 84.3% | 71.1% | ▼ 15.6% |
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 | 0 | – |
| March | 0 | 0 | – |
| April | 1 | 0 | ▼ 100.0% |
| May | 1 | 1 | 0.0% |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 2 | 1 | ▼ 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 99.5% 842
- Cancelled 0.5% 4
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 |
|---|---|---|---|---|
| SFO IND San Francisco International Airport – Indianapolis International Airport | 3,120 | 8.3 min | 82.5% | 304 |
| LAS SFO Harry Reid International Airport – San Francisco International Airport | 665 | 22.3 min | 67.7% | 198 |
| SFO ATL San Francisco International Airport – Hartsfield Jackson Atlanta International Airport | 3,435 | 13.6 min | 75.5% | 140 |
| PHX SFO Phoenix Sky Harbor International Airport – San Francisco International Airport | 1,047 | 5.5 min | 82.4% | 68 |
| STL SFO St. Louis Lambert International Airport – San Francisco International Airport | 2,786 | 4.8 min | 86.5% | 37 |
| SFO SEA San Francisco International Airport – Seattle–Tacoma International Airport | 1,093 | 4.4 min | 86.5% | 37 |
| ONT SFO Ontario International Airport – San Francisco International Airport | 585 | 21.2 min | 60.0% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 18 | 18 | 88.9% | 0 |
| November 2024 | 21 | 20 | 85.0% | 1 |
| December 2024 | 42 | 42 | 85.7% | 0 |
| January 2025 | 51 | 51 | 88.2% | 0 |
| February 2025 | 34 | 34 | 88.2% | 0 |
| March 2025 | 31 | 31 | 93.6% | 0 |
| April 2025 | 25 | 24 | 79.2% | 1 |
| May 2025 | 25 | 24 | 87.5% | 1 |
| June 2025 | 34 | 34 | 79.4% | 0 |
| July 2025 | 57 | 57 | 73.7% | 0 |
| August 2025 | 44 | 44 | 79.6% | 0 |
| September 2025 | 54 | 54 | 83.3% | 0 |
| October 2025 | 18 | 18 | 83.3% | 0 |
| November 2025 | 20 | 20 | 85.0% | 0 |
| December 2025 | 25 | 25 | 64.0% | 0 |
| January 2026 | 31 | 31 | 67.7% | 0 |
| February 2026 | 36 | 36 | 83.3% | 0 |
| March 2026 | 51 | 51 | 84.3% | 0 |
| April 2026 | 56 | 56 | 73.2% | 0 |
| May 2026 | 51 | 50 | 66.0% | 1 |
| June 2026 | 61 | 61 | 62.3% | 0 |
| July 2026 | 61 | 61 | 60.7% | 0 |