BHX is the airport code for Birmingham Airport, one of the busiest airports in the UK. There are a few synonyms that can be used for the word BHX, such as Birmingham Airport, Birmingham International Airport, and West Midlands Airport. These synonyms may be useful when making travel arrangements, searching for flight information online, or communicating with others about travel plans. It is important to note that while these words may have similar meanings to BHX, they are not interchangeable and it is important to use the correct term when referring to the airport.