Here's something you don’t see often: a bargain airfare to St. Thomas, U.S. Virgin Islands. But the offer is good only through Thursday. American is offering a round-trip fare from LAX for $468, including all taxes and fees. It is subject to availability, and you must stay a Saturday night or a minimum of two nights. The maximum stay is 30 days, and you must buy at least seven days in advance. You can travel any day of the week through June 13.