Flight profile · Alaska Airlines
AS31
New York (JFK) to Seattle (SEA) · scheduled 7:30 AM – 10:40 AM
How AS31 performs
1,080 operations, 2023-07-01 to 2026-06-30.
AS31 arrived on time 80.7% of the time, against 76.7% for all JFK → SEA flights — this specific departure is 4.0 percentage points better than the route as a whole. Against Alaska Airlines’s own flights on this route it is 3.8 points better.
Source: US DOT Bureau of Transportation Statistics · 1,080 operations between 2023-07-01 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| AS31 | 80.7% | 2.31% | -7 min | 5.6% | 1,080 |
| Alaska Airlines on JFK → SEA | 76.9% | 2.07% | -7 min | 7.1% | 4,099 |
| All JFK → SEA flights | 76.7% | 1.71% | -7 min | 7.4% | 8,844 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-30
By day of week
Does AS31 run worse on particular days?
Saturday is historically the most reliable day and Thursday the least, a gap of 5.9 percentage points.
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-30 · Days with fewer than 120 operations are not scored.
Data and methodology
Calculated by FlyerIntel from 1,080 records of AS31 operating JFK → SEA, published by the US DOT Bureau of Transportation Statistics. A flight counts as delayed when it arrives 15 or more minutes after schedule. Cancelled and diverted flights are excluded from the on-time rate and reported separately. Flight numbers are resolved as carrier plus number plus route, because the same number serves different routes over time.