Flight OddsAS399 IAH → SEA
Alaska Airlines · Houston, TX to Seattle, WA · 96 flights observed, 2025-07-01 to 2025-10-04 · 1,874 mi
AS399 covers more than one route in the data window — the stats below are for IAH → SEA, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
90%
Median delay
-6 min
90th percentile
+13 min
Cancellation rate
2%
How often is AS399 on time?
Across 96 flights on IAH → SEA from 2025-07-01 to 2025-10-04, AS399 arrived within 15 minutes of schedule 90% of the time. The median arrival delay was -6 min, and the worst 10% of flights arrived +13 min or later. 2% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 85 | 90% |
| 16-30 min | 7 | 7% |
| 31-60 min | 1 | 1% |
| 61-120 min | 1 | 1% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 30 | 90% | -12 min |
| 2025-08 | 30 | 93% | -4 min |
| 2025-09 | 30 | 93% | -2 min |
| 2025-10 | 4 | 50% | +14 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 11 | 91% |
| Tue | 14 | 93% |
| Wed | 14 | 71% |
| Thu | 14 | 93% |
| Fri | 14 | 93% |
| Sat | 14 | 100% |
| Sun | 13 | 92% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…