[08/12/2019 @ 12:35 AM CT] Fare gone.
United and ANA have round-trip flights from Dallas (DFW) to Tokyo or Osaka (HND/NRT/KIX) for $505-$567 with a connection. Flights September to May. No Weekends. Departures on Monday, Tuesday, Wednesday, and Thursday.
Note: Some small OTAs on SkyScanner have this for $481. If you plan on booking there, beware of any site that charges a fee to cancel a ticket within the 24-hour “free” period. Use unknown booking sites at your own risk.