For today and tomorrow only, budget carrier Frontier Airlines is offering 90% off your next domestic flight using the promo code SAVE90 at checkout. The 90% discount applies to base fare only (fees and taxes excluded). This news comes just as we were about to pack our bags and hitchhike to Florida in search of an actual ray of sunshine, so despite Frontier Airlines' somewhat lackluster reputation, we're still interested. All tickets must be purchased by 11:59 p.m. ET on Friday, March 23, 2018, for nonstop domestic travel, and all flights will take place on Tuesdays and Wednesdays between April 4 and May 16, 2018. If a heavily discounted flight is still not within your budget, consider browsing our list of 25 things you can do if you need it to be spring right this second instead. Head over to Frontier Airlines for more information, including the markets excluded from the 90% off promotion.