Flight OddsAA4520 DCA → IAH
American Airlines · Washington, DC to Houston, TX · 32 flights observed, 2026-01-06 to 2026-02-11 · 1,208 mi
AA4520 covers more than one route in the data window — the stats below are for DCA → IAH, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
72%
Median delay
-4 min
90th percentile
+34 min
Cancellation rate
9%
How often is AA4520 on time?
Across 32 flights on DCA → IAH from 2026-01-06 to 2026-02-11, AA4520 arrived within 15 minutes of schedule 72% of the time. The median arrival delay was -4 min, and the worst 10% of flights arrived +34 min or later. 9% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 21 | 72% |
| 16-30 min | 2 | 7% |
| 31-60 min | 5 | 17% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 1 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-01 | 19 | 79% | +5 min |
| 2026-02 | 10 | 60% | +7 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 4 | 100% |
| Tue | 6 | 50% |
| Wed | 5 | 80% |
| Thu | 5 | 100% |
| Fri | 5 | 60% |
| Sat | No data | — |
| Sun | 4 | 50% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…