$18 RT's on Spirit

To nab these fares, you must be a member of Spirit's $9 fare club, but for many it's worth the $30 to join. We'll be listing these fares individually in the city airfare pages just as fast as our little fingers can type. The $9 fares expire at midnight Jan 1, but there are so other deals that expire Jan 2, valid for non-members as well.