Flight OddsUA2638 RDU → ORD
United Airlines · Raleigh/Durham, NC to Chicago, IL · 115 flights observed, 2025-12-18 to 2026-05-20 · 646 mi
UA2638 covers more than one route in the data window — the stats below are for RDU → ORD, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
88%
Median delay
-5 min
90th percentile
+18 min
Cancellation rate
3%
How often is UA2638 on time?
Across 115 flights on RDU → ORD from 2025-12-18 to 2026-05-20, UA2638 arrived within 15 minutes of schedule 88% of the time. The median arrival delay was -5 min, and the worst 10% of flights arrived +18 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 | 99 | 88% |
| 16-30 min | 8 | 7% |
| 31-60 min | 3 | 3% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 2 | 2% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-12 | 14 | 100% | -5 min |
| 2026-01 | 24 | 79% | +0 min |
| 2026-02 | 21 | 86% | -4 min |
| 2026-03 | 22 | 91% | +9 min |
| 2026-04 | 17 | 88% | +33 min |
| 2026-05 | 14 | 93% | -5 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 21 | 90% |
| Tue | 2 | 100% |
| Wed | 10 | 100% |
| Thu | 22 | 91% |
| Fri | 22 | 73% |
| Sat | 14 | 93% |
| Sun | 21 | 90% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…