Flight OddsAA851 SEA → ORD
American Airlines · Seattle, WA to Chicago, IL · 37 flights observed, 2026-01-06 to 2026-02-11 · 1,721 mi
AA851 covers more than one route in the data window — the stats below are for SEA → ORD, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
74%
Median delay
-8 min
90th percentile
+49 min
Cancellation rate
5%
How often is AA851 on time?
Across 37 flights on SEA → ORD from 2026-01-06 to 2026-02-11, AA851 arrived within 15 minutes of schedule 74% of the time. The median arrival delay was -8 min, and the worst 10% of flights arrived +49 min or later. 5% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 26 | 74% |
| 16-30 min | 4 | 11% |
| 31-60 min | 2 | 6% |
| 61-120 min | 1 | 3% |
| 2+ hrs | 2 | 6% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-01 | 24 | 71% | +18 min |
| 2026-02 | 11 | 82% | -1 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 4 | 50% |
| Tue | 6 | 83% |
| Wed | 5 | 100% |
| Thu | 5 | 60% |
| Fri | 5 | 80% |
| Sat | 5 | 60% |
| Sun | 5 | 80% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…