About 1 in 3 UA 308 flights from Philadelphia arrived 15+ minutes late, diverted or cancelled over the past year (40%); 0.3% were cancelled. The typical flight landed 7 minutes late.
UA 308: PHL → ORD
Scheduled to leave Philadelphia at 5:00 p.m. local time. Over the past year it arrived on time 60% of the time (297 flights), in line with other UA flights on the route at that hour (58%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 43 | 70% |
| Tuesday | 42 | 64% |
| Wednesday | 42 | 62% |
| Thursday | 43 | 49% |
| Friday | 43 | 60% |
| Saturday | 42 | 69% |
| Sunday | 42 | 48% |
Why it was late
All flights PHL → ORD · Connecting off UA 308? Check the risk
UA 308: ORD → SNA
Scheduled to leave Chicago at 7:45 p.m. local time. Over the past year it arrived on time 77% of the time (226 flights), in line with other UA flights on the route at that hour (76%). Last seen in the data Aug 31, 2026.
Usually United Airlines's last flight of the day from Chicago to Santa Ana (100% of days). United Airlines's last ORD–SNA flight was cancelled 0.5% of the time, against 0.1% for its earlier ones. If it's cancelled, the next United Airlines flight is usually around 8:40 a.m. the next morning.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 36 | 69% |
| Tuesday | 36 | 78% |
| Wednesday | 36 | 72% |
| Thursday | 35 | 80% |
| Friday | 35 | 89% |
| Saturday | 12 | — |
| Sunday | 36 | 78% |
Why it was late
All flights ORD → SNA · Connecting off UA 308? Check the risk
Questions
How often is UA 308 from PHL to ORD late?
United Airlines 308 from Philadelphia, PA to Chicago, IL arrived 15 or more minutes late, was diverted or was cancelled on 40% of 297 scheduled flights between September 2025 and August 2026. 0.3% were cancelled.
How often is UA 308 from ORD to SNA late?
United Airlines 308 from Chicago, IL to Santa Ana, CA arrived 15 or more minutes late, was diverted or was cancelled on 23% of 226 scheduled flights between September 2025 and August 2026. 0.9% were cancelled.
Flight numbers change. Figures cover flights with this airline, number and route only. "Likely range" is the 95% interval for the true on-time rate given the number of flights. This is history, not live status: check United Airlines for today's flight. Method.