If you’ve been waiting for Frontier to share some $20, wait not longer. Frontier is offering $20 and you must book by April 9, 2018. $20 Flights Available: Albuquerque to Austin: $20 one-way. Albuquerque to Denver: $20 one-way. Austin to Albuquerque: $20 one-way. Austin to New Orleans: $20 one-way. Birmingham to Philadelphia: $20 one...
