<link href="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css"> <script src="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/js/bootstrap.min.js"></script> <script src="//cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script> <!------ Include the above in your HEAD tag ----------> For those who are wondering, "<a href="https://allairportsterminals.com/spirit-airlines/spirit-airlines-bos-terminal-boston-logan-international-airport/">What Terminal is Spirit Airlines at BOS </a> " the airline is based at Boston Logan International Airport, specifically at Terminal B. In order to improve the traveler experience, this terminal provides a range of amenities, such as quick check-in procedures, security checks, food options, and retail stores. Using the Green and Blue Line MBTA subway or traveling by vehicle via Interstate 93, passengers can easily reach Terminal B.