l’halakha, interrupting prayer would be midrabonan, so a miduraita issue would override it. For example, a concern for flight attendant’s mental health, if she is worried about strange behavior. Of course, if she is a pure anti-semite, then the situation is opposite. And if the davening is medauraita maybe halakha will be different (plane is not doing well or the davener is claustrophobic)
Also, if you daven well, you should expect most people to respect or even be in owe. I am told that one of the first Chasidishe Rebbeim from midwest visited Uman at the sunset of USSR, before Uman became Mardi Gra. His taxi was stopped by a Ukrainian policeman who started radioing to figure out what to do with the strange man. Rav opened a Gemorah not to waste time. The policeman got frightened by the view and told him to leave immediately.