United's domestic offer features flights to Myrtle Beach, Santa Barbara, and Washington, D.C, through late November. Other airlines have competing prices, however.
This new deal from Southwest includes competitive prices for travel to Chicago, Las Vegas, New Orleans, and more. Book by midnight CT on Thursday, June 12.
Spirit is offering free tickets to registered members of its Free Spirit frequent flyer program. Book and register for the offer by 11:59 p.m. ET on Wednesday.
