a round trip ticket to seoul from new york or l.a. is almost $1,000. you have to add on train tickets and hotel prices, food, more. the folks at wallet hub estimate the average person will spend $4,600 for a week in pyeongchang. overall, travel is up 24% but experts say it is typically much higher for a major sporting event. in our world lead for the first time ever, a member of kim jong-un's family will go to south korea. his sister will be there to watch the opening ceremonies. the announcement coming hours after vice president pence pledged the u.s. would unleash the toughest round of sanctions yet against north korea. i want to bring in will ripley in seoul. friday night all eyes will be on the delegation in south korea. i understand you have some breaking news on north korea's diplomatic situation. >> reporter: that's right. i'm speaking with diplomatic sources who say don't be fooled by the fact jong jon's sister