We do not have enough data on this route to provide a reliable graph showing how many days before departure it is the best to book.
However, usually the closer it is to the departure, the more expensive the tickets are.
The most popular airlines on the route New York John F. Kennedy - Seattle Tacoma: Delta Airlines (DL), Alaska Airlines (AS), American Airlines (AA).
Direct flights last about 6h 11min.
Direct flights available 5 days a week - Tuesday, Wednesday, Friday, Saturday, Sunday.
Direct flights: Delta Airlines (DL), Alaska Airlines (AS), American Airlines (AA).
New York (NY) Seattle (WA)