http://www.expedia.com for ticket e龙旅游from new york to san jose about 9 -10 hours and feight fee around us$350-$430 (US airway and Delta),American Airline is more expensive.Also there are another United and Continental. http://www.priceline.com 

to Charlotte, Non stop ,about 2hrs, but all are US airway.about $212 two way ticket. 3/23 (friday) the last flight is 4:30pm $212,3/24 (saturday) only 1 flight non stop : 6:30am $247,back to ny3/25 (sunday) 2:10 pm and 8:00pm (arrive NY 9:45) FROM JFC but from other airport, more detail and more line .

the best : 8:00 am Depart New York (LGA)Arrive Charlotte (CLT) 9:54 am 5:50 pm Depart Charlotte (CLT)Arrive New York (LGA) 7:42 pm $212.or 3/23 6:30 pm Depart New York (LGA)Arrive Charlotte (CLT) 8:35 pm

US AIRWAY 好像飞机大点吧。LGA (La Guardia Airport ) in long island