Zipair is offering Roundtrip Nonstop Flights from San Jose, California (SJC) to Tokyo, Japan (NRT) from only $471! They are like Spirit airlines where they charge for anything extra, but they are run by Japan Airlines. If you just want to grab a backpack and go explore Japan, this is a great deal!
Let's not forget the insane Yen rates. $1 to 145 yen right now. You can have a nice meal for $7-8.
You can stay at a luxury hotel for ~$150.
This should work on dates between November 2022 - March 2023Step 1Use Google Flights
to find the cheap dates
Some exampleDirect link to ZipairSome fun things to do in Japan
Local ramen restaurants dirt cheap