Virgin America is celebrating its fifth birthday with a one-day nationwide airfare sale, today only. “Book Like it’s Your Birthday” network-wide fare sale for travel between August 21, 2012 and November 14, 2012. Main Cabin fares start as low as $55 between San Francisco (SFO) and Las Vegas (LAS), and from $145 between New York (JFK) and Los Angeles (LAX). Tickets must be purchased by 11:59pm CDT today, August 9, 2012. Make reservations on the Virgin America website. Also, starting today, members of the airline’s Elevate frequent flyer program get additional benefits, including bonus points for check-in via social media, and the chance to earn a Virgin Galactic space flight. Find hotel deals in Virgin America cities, and elsewhere, on the NYC OTC Daily Deals Round-up page, with cheap getaways from Groupon, LivingSocial and more.