Ultra-low-cost carrier Frontier Airlines has just unveiled an ambitious plan to add 42 new routes this spring — including nonstops between San Francisco and Atlanta — amid fresh speculation that it could be setting the stage for a possible merger with Spirit Airlines. The company, which recently acquired a new CEO has been making improvements in its operations and fine-tuning it’s route network. New routes announced include new Atlanta-San Francisco non-stops (for just $79 each way!) and Cleveland-San Francisco service starting April 15, and Cincinnati-San Francisco beginning April 14. Other new routes from Atlanta and their starting dates include St. Louis, Memphis and Houston Bush Intercontinental (all April 14), and Raleigh-Durham, Phoenix, Milwaukee and Kansas City (all April 15). Travel Skills has all the details which you can view by clicking here.