Flight OddsAS631 SEA → SNA
Alaska Airlines · Seattle, WA to Santa Ana, CA · 94 flights observed, 2025-10-26 to 2026-06-30 · 978 mi
AS631 covers more than one route in the data window — the stats below are for SEA → SNA, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
84%
Median delay
-9 min
90th percentile
+20 min
Cancellation rate
1%
How often is AS631 on time?
Across 94 flights on SEA → SNA from 2025-10-26 to 2026-06-30, AS631 arrived within 15 minutes of schedule 84% of the time. The median arrival delay was -9 min, and the worst 10% of flights arrived +20 min or later. 1% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 78 | 84% |
| 16-30 min | 10 | 11% |
| 31-60 min | 5 | 5% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-10 | 6 | 83% | -12 min |
| 2025-11 | 29 | 97% | -5 min |
| 2025-12 | 12 | 58% | +8 min |
| 2026-01 | 4 | 50% | +23 min |
| 2026-04 | 9 | 89% | -17 min |
| 2026-05 | 12 | 100% | -18 min |
| 2026-06 | 21 | 76% | -5 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 14 | 79% |
| Tue | 14 | 100% |
| Wed | 11 | 100% |
| Thu | 11 | 73% |
| Fri | 14 | 71% |
| Sat | 14 | 86% |
| Sun | 15 | 80% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…