[10/28/2016 @ 1:00 PM] Fare gone. Removing from deal list.
Delta and American Airlines have round-trip flights from Houston (IAH/HOU) to Tokyo (NRT/HND) starting at $590 with a connection. Flights midweek from October to March. No Weekends. Big blackout date range; December 7th to January 10th.
The cheapest fares leave and return on Tuesday or Wednesday. Other days of the week price about +30 more.
Note: Pay attention to your arrival and departing airport. The cheapest fares may require flying into NRT, and returning out of HND.