Flight OddsAS31 JFK → SEA
Alaska Airlines · New York, NY to Seattle, WA · 363 flights observed, 2025-07-01 to 2026-06-30 · 2,422 mi
On-time arrival
73%
Median delay
0 min
90th percentile
+50 min
Cancellation rate
4%
How often is AS31 on time?
Across 363 flights on JFK → SEA from 2025-07-01 to 2026-06-30, AS31 arrived within 15 minutes of schedule 73% of the time. The median arrival delay was 0 min, and the worst 10% of flights arrived +50 min or later. 4% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 254 | 73% |
| 16-30 min | 34 | 10% |
| 31-60 min | 29 | 8% |
| 61-120 min | 12 | 3% |
| 2+ hrs | 19 | 5% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 29 | 62% | +39 min |
| 2025-08 | 31 | 74% | +9 min |
| 2025-09 | 30 | 87% | +1 min |
| 2025-10 | 28 | 89% | -1 min |
| 2025-11 | 24 | 67% | +11 min |
| 2025-12 | 30 | 43% | +45 min |
| 2026-01 | 30 | 77% | +5 min |
| 2026-02 | 26 | 65% | +8 min |
| 2026-03 | 31 | 55% | +20 min |
| 2026-04 | 30 | 80% | +18 min |
| 2026-05 | 30 | 87% | +3 min |
| 2026-06 | 29 | 90% | -7 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 49 | 76% |
| Tue | 53 | 72% |
| Wed | 51 | 69% |
| Thu | 47 | 72% |
| Fri | 50 | 70% |
| Sat | 50 | 78% |
| Sun | 48 | 75% |
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…