Most-bookable ways to fly JFK → HND (economy)

HND likely needs 3+ stops from JFK

Tokyo, Japan is a smaller airport with no nonstop or one-stop service from JFK. Award programs almost never have space on every segment of a 3+ stop itinerary, so trying to book end-to-end on points here usually fails.

Try this instead: search from JFK to a major international hub near Japan (think Singapore, Tokyo, Hong Kong, Doha, Dubai, Frankfurt — whichever is closest), book that long-haul leg with miles, then handle the final hop separately with cash or a regional program. You'll almost always come out ahead.