Budget Travel - Fare deals LAX-BOS/NYC?

Does anyone know of a cheap non-stop flight between LA and either Boston or NYC? Travel time 8/8 to 8/13. Able to adjust a day or so either way.

Teach a man to fish... (in no particular order)

Flyertalk.com (good start and welcome to FT!)

http://matrix.itasoftware.com/

http://www.kayak.com/

your favorite TA or OTA...

FWIW, I quickly found $460 on DL from ITA LAX-JFK, $421 on US from LA area airports, $401 on UA.