Peak season best weather for Phuket, Thailand is November to January. China Southern has LAX to Phuket priced at $381 round trip for the last half of January and then fares drop again in March to May.
SFO departures price at $443 and San Jose SJC is $465 with connecting flights on Virgin America.
China Southern
Los Angeles LAX – Guangzhou CAN – Phuket HKT – CAN – LAX
$380.38 round trip Fri Jan 19 – Sun Jan 28, 2018
