Low-cost carrier Allegiant Air is running a free round-trip companion airfare promotion. To take advantage of the offer, you need to book two air-and-hotel packages for two nights or more in Las Vegas.
The promotion is valid on packages purchased by March 19 for travel between April 1 and August 31. Even though the second air ticket is free, you'll still pay the taxes and fees, plus checked baggage fees.
Allegiant serves a lot of smaller airports such as Bellingham, Washington; Duluth, Minnesota; Laredo, Texas; and Stockton, California. So this deal reaches many people who might otherwise need to drive long distances to larger airports for nonstop flights to Las Vegas.