frontier airlines is committed to offering ‘low fares done right’ to more than 60 destinations in the united states, dominican republic and mexico on nearly 300 daily flights. headquartered in denver, frontier’s hard-working aviation professionals pride themselves in delivering the company’s signature low fares done right hospitality to customers. frontier airlines is the proud recipient of the federal aviation administration’s 2015 diamond award for maintenance excellence and was recently named the industry’s most fuel-efficient airline by the international council on clean transportation (icct) as a result of superior technology and operational efficiencies.