Denver International Airport to Union Station downtown .
At a cost of $10.50, travelers can use the A Line to get from the airport to downtown Denver and vice versa, courtesy of the Regional Transportation District (RTD), metro Denver's public transit provider.
The Airport Rail Line, which opened on April 22, 2016, whisks travelers to the heart of downtown, specifically Denver Union Station , which is the city's transportation hub and "living room," thanks to its plush surroundings. From Union Station, travelers can access additional local and regional transportation services, such as light rail, regional and local buses, Amtrak rail service, taxis and the free 16th Street Mall shuttle (MallRide) and free downtown MetroRid…