You can fly abroad in business class on points alone \u2014 if you know how to play the points game. To wrap up our Nerdy Travel Diaries series, Liz talks with travel Nerd Elina Geller about her strategy for booking international business class flights.\xa0\nTo send the Nerds your money questions, call or text the Nerd hotline at 901-730-6373 or email podcast@nerdwallet.com.\nLike what you hear? Please leave us a review and tell a friend.