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Booking Window
Best Time to Book JFK to SEA
The best time to book New York (JFK) to Seattle (SEA) is usually 46-60 days before departure right now. Updated June 29, 2026.
Best to Book
46-60
Days Advance
Current buying window. Prices often jump significantly inside 21 days for SEA.
Best to Fly
Wednesday
Departure Day
Wednesday tend to offer the lowest base fares. Avoid Sunday.
Best to Go
APR
Lowest Fares
Historical low-season for SEA.
Analyst Brief
Current action: monitor. Recent baseline is calibrating. Trend is currently stable. SERPRadio is holding buy-now language until this route clears the publishability gate.