Denver International Airport will not have a non-stop flight to Cuba. The U.S. transportation department has turned down a request by locally-based Frontier Airlines for three daily flights to Havana. 

A federal proposal would allow eight airlines to begin non-stop flights to Cuba’s capital city from 10 U.S. cities; Frontier is included on that list for a flight from Miami but not from Denver.

The U.S. and Cuba agreed to allow each country to operate up to 20 daily flights, even though airlines proposed three times that number. In a statement, transportation officials say they gave priority to areas with substantial Cuban-American populations and important aviation hub cities.

Public comments on the plan will be accepted through July 29.