Flight OddsAA4635 DCA → ORD
American Airlines · Washington, DC to Chicago, IL · 52 flights observed, 2025-12-03 to 2026-02-11 · 612 mi
AA4635 covers more than one route in the data window — the stats below are for DCA → ORD, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
57%
Median delay
-2 min
90th percentile
+99 min
Cancellation rate
8%
How often is AA4635 on time?
Across 52 flights on DCA → ORD from 2025-12-03 to 2026-02-11, AA4635 arrived within 15 minutes of schedule 57% of the time. The median arrival delay was -2 min, and the worst 10% of flights arrived +99 min or later. 8% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 27 | 57% |
| 16-30 min | 9 | 19% |
| 31-60 min | 3 | 6% |
| 61-120 min | 6 | 13% |
| 2+ hrs | 2 | 4% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-12 | 14 | 64% | +15 min |
| 2026-01 | 22 | 55% | +30 min |
| 2026-02 | 11 | 55% | +31 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 6 | 67% |
| Tue | 8 | 75% |
| Wed | 9 | 56% |
| Thu | 6 | 67% |
| Fri | 5 | 60% |
| Sat | 7 | 57% |
| Sun | 6 | 17% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…