According to Madhhab:
Many of the airport lounges serve alcohol. Is it correct for a Muslim to frequent such lounges?
Rasulullah is reported to have said, “Whoever believes in Allah and the last day should not sit upon a table on which wine is circulated (served). If wine is openly served and people are consuming
in on the tables then we as believers should abstain from sitting in such an environment. If we have been afforded access to such lounges due to holding a first class ticket or business ticket then
we should acquire our needs (i.e. take the items that we require which is available to the passengers) and thereafter leave the lounge, or if there is such an area that caters for non-drinkers then we
should use such an area. (Darul Ifta archives)