Flight profile · United Airlines
UA308
Philadelphia (PHL) to Chicago (ORD) · scheduled 5:00 PM – 6:20 PM
How UA308 performs
604 operations, 2024-06-27 to 2026-06-30.
UA308 arrived on time 64.3% of the time, against 77.6% for all PHL → ORD flights — this specific departure is 13.3 percentage points worse than the route as a whole. Against United Airlines’s own flights on this route it is 15.9 points worse.
Source: US DOT Bureau of Transportation Statistics · 604 operations between 2024-06-27 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| UA308 | 64.3% | 0.99% | 5 min | 12.4% | 604 |
| United Airlines on PHL → ORD | 80.1% | 1.12% | -8 min | 7.2% | 4,989 |
| All PHL → ORD flights | 77.6% | 1.97% | -8 min | 9.8% | 13,672 |
Source: FlyerIntel analysis of US DOT BTS data · 2024-06-27 to 2026-06-30
Other routes UA308 has flown
A flight number is a slot in a schedule, and carriers reassign it. These are the other city pairs this number served in the analysis period.
| Route | Operated | Flights | On time |
|---|---|---|---|
| ORD→SNA Chicago to Santa Ana | 2024-12-03 – 2026-06-30 | 229 | 84.1% |
| JAC→IAH Jackson to Houston | 2026-01-10 – 2026-02-07 | 5 | — |
| ORD→LGA Chicago to New York | 2025-10-26 – 2025-12-01 | 36 | — |
| IAD→RSW Washington to Fort Myers | 2025-11-27 – 2025-11-27 | 1 | — |
| ORD→ONT Chicago to Ontario | 2025-09-25 – 2025-10-24 | 26 | — |
| ORD→CVG Chicago to Cincinnati / Covington | 2024-09-01 – 2025-09-23 | 43 | — |
| ORD→MEM Chicago to Memphis | 2025-06-01 – 2025-06-25 | 25 | — |
| ORD→BNA Chicago to Nashville | 2025-03-30 – 2025-04-30 | 32 | — |
| DEN→LAX Denver to Los Angeles | 2024-10-27 – 2024-12-02 | 37 | — |
| ORD→PHL Chicago to Philadelphia | 2024-06-27 – 2024-07-06 | 10 | — |
| DFW→DEN Dallas–Fort Worth to Denver | 2024-05-24 – 2024-06-26 | 34 | — |
| IND→ORD Indianapolis to Chicago | 2024-05-23 – 2024-05-23 | 1 | — |
| ORD→LAX Chicago to Los Angeles | 2024-05-23 – 2024-05-23 | 1 | — |
| EWR→DFW Newark to Dallas–Fort Worth | 2023-10-01 – 2024-05-22 | 64 | — |
| DFW→IAH Dallas–Fort Worth to Houston | 2024-05-02 – 2024-05-22 | 18 | — |
| ORD→PHX Chicago to Phoenix | 2024-05-04 – 2024-05-18 | 3 | — |
| ORF→EWR Norfolk to Newark | 2024-04-07 – 2024-05-01 | 16 | — |
| ORD→SRQ Chicago to Sarasota/Bradenton | 2024-04-06 – 2024-04-27 | 4 | — |
| COS→DEN Colorado Springs to Denver | 2024-03-07 – 2024-03-30 | 24 | — |
| EWR→TPA Newark to Tampa | 2024-01-09 – 2024-03-06 | 52 | — |
| DEN→RNO Denver to Reno | 2024-01-08 – 2024-01-08 | 1 | — |
| IAH→SLC Houston to Salt Lake City | 2023-12-21 – 2024-01-07 | 18 | — |
| BOS→EWR Boston to Newark | 2023-09-29 – 2023-12-20 | 53 | — |
| IAH→FLL Houston to Fort Lauderdale | 2023-10-29 – 2023-11-27 | 30 | — |
| EWR→CLT Newark to Charlotte | 2023-09-30 – 2023-09-30 | 1 | — |
| BNA→SFO Nashville to San Francisco | 2023-07-01 – 2023-09-28 | 89 | — |
| ORD→BZN Chicago to Bozeman | 2023-09-03 – 2023-09-03 | 1 | — |
Because the same number has served different journeys, the statistics above describe only the route UA308 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 604 records of UA308 operating PHL → ORD, published by the US DOT Bureau of Transportation Statistics. A flight counts as delayed when it arrives 15 or more minutes after schedule. Cancelled and diverted flights are excluded from the on-time rate and reported separately. Flight numbers are resolved as carrier plus number plus route, because the same number serves different routes over time.