Newborn on flight

So for thanksgiving I will be taking my daughter on a plane for the first time. She will be 5wks old. I plan on wearing her during the flight but that's not what I am asking about. My fiancé is upset that I am flying with her because he is nervous about her getting sick. This is also the same man who refuses to get the whooping cough vaccine or the flu shot (which I have asked him to do dozens of times in order to protect her) he wants me to ask you ladies how you feel about flying with newborns. I'm just annoyed he's being hypocritical. She's going to be against me / covered a majority of the time we are in the airport. I honestly don't see how going to the airport differs from bringing her to the Drs office or the grocery store. Granted I am a bit nervous too but he's trying to tell me not to go because of it.