The EasyJet T&Cs are publicly available http://www.easyjet.com/terms-and-conditions http://www.easyjet.com/terms-and-conditions and outline the circumstances un

The EasyJet T&Cs are publicly available http://www.easyjet.com/terms-and-conditions http://www.easyjet.com/terms-and-conditions and outline the circumstances under which they can refuse carriage. The applicable section would be: 19.2 Right to refuse carriage and the closest there is to any reason would seem to be: "19.2.7 You have used threatening, abusive or insulting words to, or have behaved in a threatening, abusive or insulting manner towards, a member of easyJet staff, crew or Airport Staff or a fellow passenger;" Even that seems to be a major push. If they'd wanted to be petty they could probably get away with a detailed check of his documentation or whatever that might make him miss the flight but to do that they'd probably have needed to not say anything about it being linked to the tweet.