Flight OddsUA3660 ORD → DCA
United Airlines · Chicago, IL to Washington, DC · 36 flights observed, 2025-10-26 to 2025-12-01 · 612 mi
UA3660 covers more than one route in the data window — the stats below are for ORD → DCA, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
53%
Median delay
+12 min
90th percentile
+138 min
Cancellation rate
6%
How often is UA3660 on time?
Across 36 flights on ORD → DCA from 2025-10-26 to 2025-12-01, UA3660 arrived within 15 minutes of schedule 53% of the time. The median arrival delay was +12 min, and the worst 10% of flights arrived +138 min or later. 6% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 18 | 53% |
| 16-30 min | 6 | 18% |
| 31-60 min | 4 | 12% |
| 61-120 min | 1 | 3% |
| 2+ hrs | 5 | 15% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-10 | 6 | 33% | +17 min |
| 2025-11 | 27 | 59% | +29 min |
| 2025-12 | 1 | 0% | +172 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 5 | 80% |
| Tue | 5 | 60% |
| Wed | 5 | 40% |
| Thu | 4 | 50% |
| Fri | 5 | 40% |
| Sat | 4 | 75% |
| Sun | 6 | 33% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…