United has round-trip flights from Dallas (DFW) to Tokyo and Osaka (HND/NRT, KIX) for $685-$689 with a connection. Tokyo flights January, February, March, April, August, September, and October. Osaka flights in January to March. No peak Sakura season dates were found.
This works as an Open-jaw, which means you can fly into Tokyo and return from Osaka for Jan-Mar trips. This will allow you to visit more of Japan while saving you from having to buy a shinkansen fare back to your starting airport.
Osaka fares have longer connection times and are limited to January to March.
Here’s an example open jaw itinerary: Jan 14 DFW-NRT / take the shinkansen to Osaka / Jan 21 KIX-DFW
Read More Cheap Flights: Dallas to Tokyo or Osaka $685-$689 round-trip (open jaw available) [Jan-Apr, Aug-Oct / Jan-Mar] – United