Flight OddsUnited Airlines · Chicago, IL to Allentown/Bethlehem/Easton, PA · 37 flights observed, 2025-10-26 to 2025-12-01 · 654 mi
UA4539 covers more than one route in the data window — the stats below are for ORD → ABE, the one it has flown most recently. The others are linked under “Other routes”.
How often is UA4539 on time?
Across 37 flights on ORD → ABE from 2025-10-26 to 2025-12-01, UA4539 arrived within 15 minutes of schedule 78% of the time. The median arrival delay was -12 min, and the worst 10% of flights arrived +50 min or later. 3% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 28 | 78% |
| 16-30 min | 2 | 6% |
| 31-60 min | 3 | 8% |
| 61-120 min | 2 | 6% |
| 2+ hrs | 1 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-10 | 6 | 67% | +3 min |
| 2025-11 | 29 | 79% | +7 min |
| 2025-12 | 1 | 100% | -22 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 6 | 83% |
| Tue | 5 | 60% |
| Wed | 5 | 80% |
| Thu | 5 | 100% |
| Fri | 5 | 60% |
| Sat | 4 | 75% |
| Sun | 6 | 83% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…