Flight OddsUA1634 ORD → PHL
United Airlines · Chicago, IL to Philadelphia, PA · 91 flights observed, 2025-10-26 to 2026-02-11 · 678 mi
UA1634 covers more than one route in the data window — the stats below are for ORD → PHL, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
69%
Median delay
-1 min
90th percentile
+66 min
Cancellation rate
2%
How often is UA1634 on time?
Across 91 flights on ORD → PHL from 2025-10-26 to 2026-02-11, UA1634 arrived within 15 minutes of schedule 69% of the time. The median arrival delay was -1 min, and the worst 10% of flights arrived +66 min or later. 2% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 61 | 69% |
| 16-30 min | 9 | 10% |
| 31-60 min | 9 | 10% |
| 61-120 min | 4 | 5% |
| 2+ hrs | 5 | 6% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-10 | 6 | 67% | +12 min |
| 2025-11 | 28 | 75% | +14 min |
| 2025-12 | 15 | 60% | +23 min |
| 2026-01 | 28 | 64% | +21 min |
| 2026-02 | 11 | 82% | +13 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 13 | 62% |
| Tue | 13 | 77% |
| Wed | 12 | 83% |
| Thu | 12 | 42% |
| Fri | 13 | 77% |
| Sat | 12 | 75% |
| Sun | 13 | 69% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…