Delta, Korean Air, and Air Canada have round-trip flights from Seattle (SEA) to Tokyo, Osaka, or Fukuoka (HND, KIX, FUK) for $727-$758. Tokyo flights are NONSTOP. Other destinations have a connection. Most trips require a 7-day minimum stay required.
Tokyo flights August, September, October, November, and February.
Fukuoka flights August to September.
Osaka flights August, September, October, and March.
A Carry-on bag and also a personal item is allowed for free. You can avoid paying for seat selection by accepting the randomly assigned seat at the gate.
Click for more details and booking links Cheap Flights: Seattle to Tokyo (HND), Fukuoka, or Osaka $727-$758 r/t (No Thanksgiving) – Delta / Korean Air / Air Canada