UA308
UA308 (United Airlines) is a multi-stop service on 10 routes, busiest Philadelphia to Chicago. Of 993 departures recorded from October 2024 to July 2026, 77.1% left on time, according to the US BTS.
- On-time departures77.1%of 993 flights
- Average delay19.8 min
- July 202662▲ 100.0%vs July 2025
- Cancelled0.9%
- 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 | 58 | 35 | ▼ 39.7% |
| February | 38 | 42 | ▲ 10.5% |
| March | 33 | 38 | ▲ 15.2% |
| April | 60 | 56 | ▼ 6.7% |
| May | 31 | 59 | ▲ 90.3% |
| June | 55 | 60 | ▲ 9.1% |
| July | 31 | 62 | ▲ 100.0% |
| August | 31 | – | – |
| September | 53 | – | – |
| October | 58 | – | in progress |
| November | 30 | – | – |
| December | 57 | – | – |
| Year to date (Jan–Jul) | 306 | 352 | ▲ 15.0% |
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 | 79.3% | 77.1% | ▼ 2.7% |
| February | 86.8% | 90.5% | ▲ 4.2% |
| March | 78.8% | 76.3% | ▼ 3.1% |
| April | 74.6% | 91.1% | ▲ 22.1% |
| May | 64.5% | 93.2% | ▲ 44.5% |
| June | 61.8% | 78.0% | ▲ 26.1% |
| July | 70.0% | 68.9% | ▼ 1.6% |
| August | 78.6% | – | – |
| September | 71.7% | – | – |
| October | 77.6% | – | in progress |
| November | 57.1% | – | – |
| December | 73.7% | – | – |
| Year-to-date average (Jan–Jul) | 73.7% | 82.2% | ▲ 11.5% |
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 | 0 | 0 | – |
| June | 0 | 1 | – |
| July | 1 | 1 | 0.0% |
| August | 3 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 2 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 2 | 2 | 0.0% |
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 99.1% 984
- Cancelled 0.9% 9
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
5| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| PHL ORD Philadelphia International Airport – Chicago O'Hare International Airport | 1,088 | 20.1 min | 81.4% | 553 |
| ORD SNA Chicago O'Hare International Airport – John Wayne Orange County International Airport | 2,772 | 11.1 min | 78.0% | 260 |
| DEN LAX Denver International Airport – Los Angeles International Airport | 1,385 | 30.9 min | 70.3% | 37 |
| ORD LGA Chicago O'Hare International Airport – LaGuardia Airport | 1,177 | 60.9 min | 50.0% | 36 |
| ORD BNA Chicago O'Hare International Airport – Nashville International Airport | 660 | 17.8 min | 64.5% | 32 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 85.0% | 0 |
| November 2024 | 30 | 30 | 70.0% | 0 |
| December 2024 | 56 | 56 | 82.1% | 0 |
| January 2025 | 58 | 58 | 79.3% | 0 |
| February 2025 | 38 | 38 | 86.8% | 0 |
| March 2025 | 33 | 33 | 78.8% | 0 |
| April 2025 | 60 | 59 | 74.6% | 1 |
| May 2025 | 31 | 31 | 64.5% | 0 |
| June 2025 | 55 | 55 | 61.8% | 0 |
| July 2025 | 31 | 30 | 70.0% | 1 |
| August 2025 | 31 | 28 | 78.6% | 3 |
| September 2025 | 53 | 53 | 71.7% | 0 |
| October 2025 | 58 | 58 | 77.6% | 0 |
| November 2025 | 30 | 28 | 57.1% | 2 |
| December 2025 | 57 | 57 | 73.7% | 0 |
| January 2026 | 35 | 35 | 77.1% | 0 |
| February 2026 | 42 | 42 | 90.5% | 0 |
| March 2026 | 38 | 38 | 76.3% | 0 |
| April 2026 | 56 | 56 | 91.1% | 0 |
| May 2026 | 59 | 59 | 93.2% | 0 |
| June 2026 | 60 | 59 | 78.0% | 1 |
| July 2026 | 62 | 61 | 68.9% | 1 |