Flight OddsAS429 ORD → SEA
Alaska Airlines · Chicago, IL to Seattle, WA · 28 flights observed, 2026-05-13 to 2026-06-09 · 1,721 mi
AS429 covers more than one route in the data window — the stats below are for ORD → SEA, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
71%
Median delay
+3 min
90th percentile
+54 min
Cancellation rate
0%
How often is AS429 on time?
Across 28 flights on ORD → SEA from 2026-05-13 to 2026-06-09, AS429 arrived within 15 minutes of schedule 71% of the time. The median arrival delay was +3 min, and the worst 10% of flights arrived +54 min or later. 0% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 20 | 71% |
| 16-30 min | 2 | 7% |
| 31-60 min | 4 | 14% |
| 61-120 min | 2 | 7% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-05 | 19 | 84% | +1 min |
| 2026-06 | 9 | 44% | +29 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 4 | 50% |
| Tue | 4 | 75% |
| Wed | 4 | 75% |
| Thu | 4 | 100% |
| Fri | 4 | 50% |
| Sat | 4 | 75% |
| Sun | 4 | 75% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…