DENVER (CBS4)- Two of Denver International Airport’s biggest carriers rank at the opposite ends of a new survey on rude airline employees by Airfarewatchdog.com.

The travel website asked just over 1,000 domestic air travelers to share their thoughts on which airlines have the rudest workers.

United Airlines, DIA’s largest carrier, was picked by 21 percent of those surveyed as having surly employees, behind only American Airlines (25 percent), a smaller player at the Denver airport, and ahead of Delta Air Lines (18 percent), US Airways (12 percent) and Spirit Airlines (10 percent).

On the other hand, Denver-based Frontier Airlines — No. 3 at DIA — tied with Alaska Airlines, JetBlue Airways and Virgin America as having the nicest workers out of 12 airlines in the poll, with only 2 percent of passengers surveyed by Airfarewatchdog.com saying their employees are rude.

Read more on the website of CBS4 partner the Denver Business Journal.