Flying at 9 weeks with twins Modi

Hi! First time pregnancy and recently learned we are having twins after long IVF journey. My husband has a trip to Vancouver for skiing that I originally wasn’t going to go, but realized I won’t have time to travel much later in pregnancy and with twins. Definitely not skiing, just hanging out in the cabin etc, but while everything says it should be ok to fly, one of the flights is a red eye, I am unsure if I should go! What do you all think? Thanks so much!!