Historical on-time performance
New York to Seattle
2,421 miData through Dec 2025Source: US DOT · BTS
Flights on JFK–SEA arrive on time 69% of the time over the last 12 months.
On-time rate69%arrived within 15 min
p90 delay50 min1 in 10 flights is worse (tail risk)
Cancelled1.6%of scheduled flights
based on 2,860 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
Too close to call — no single carrier is clearly more on-time here.
- Alaska AirlinesOn-time65%Medianon timep9055 minCancel2.4%Flights1,371
- Delta Air LinesOn-time74%Medianon timep9040 minCancel0.8%Flights1,336
- JetBlue AirwaysOn-time67%Medianon timep9075 minCancel0.7%Flights153
Why flights run late
Delay causes
- Airline26%
- Weather2%
- Air traffic (NAS)44%
- Late aircraft26%
- Security1%
Most delay minutes here are attributed to Air traffic (NAS).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly JFK → SEA
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 65% to 86% on time.
- Middays86% on time · p90 20 min · 1,833 flights
- Mornings84% on time · p90 20 min · 2,793 flights
- Afternoons76% on time · p90 40 min · 2,054 flights
- Evenings65% on time · p90 70 min · 2,249 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 76% to 81% on time.
- Tuesdays81% on time · p90 30 min · 1,262 flights
- Wednesdays80% on time · p90 35 min · 1,258 flights
- Mondays79% on time · p90 40 min · 1,300 flights
- Saturdays76% on time · p90 45 min · 1,250 flights
- Thursdays76% on time · p90 35 min · 1,281 flights
- Sundays76% on time · p90 45 min · 1,304 flights
- Fridays76% on time · p90 40 min · 1,299 flights
Advertisement
Keep exploring