Flight Tacoma International Airport departs from Seattle Tacoma International Airport at 09:15 and arrives at New York La Guardia Airport at 21:58.The flight has a short stop at Houston.
The flighttime is about 9h 43m. The distance travelled ("as the bird flies"): 5376 Km. So the average speed is roughly 553 Km.
There is an 3 hour time difference between Seattle and New York