For a limited time only, Discount Den Members have exclusive access to our NEW Friends Fly Free sale! Now Friends Fly Free with us! Buy one Discount Den Fare and get one free on select routes and dates. Make sure you purchase by Mar. 23, 2020 and travel 3/13/20 – 5/31/20 and one friend can fly for free for every one-way or round-trip Discount Den Fare purchased on qualifying flights and dates.