Best way to buy tickets from Okinawa to Tokyo (and back)

so I usually use chase travel since it’s just easier for me, (no redirecting to outside portals)

BUT FOR SOME REASON ITS SAYING 3 ONE WAY TICKETS ARE $1200 (about ¥180000)

but on google im seeing 3 tickets for about $250 (¥37500) but thats through jet star and the website refuses to work!

can some one direct me to the locals prefered methods?