Unless if the flights that you want are looking full, I'd wait till Tuesday to see if they drop. Also, there's so much inventory going from SEA to LAX that I, personally, wouldn't be super worried.
I saved $5 booking our tickets to NZ by waiting for a Tuesday.
ok. i'm not super worried.. i should just wait.. that gives us more time to talk. h wants to take a super late flight out because we'd be leaving on our anniversary and he wants to do something that day in la for it..