Denver International Airport officials say Southwest Airlines' re-entry into the Denver market about a year ago has sparked some significant changes at the airport.
Fares on flights to and from Denver have risen, the airport has continued to grow, and there's more competition pressure on Denver-based Frontier Airlines and United Airlines, which together have about 80 percent of the market at D.I.A.
Dallas-based Southwest has 32 daily departures from Denver to ten domestic cities and most of them are on routes already served by United and Frontier.
Aviation manager Turner West says Southwest seems to be stimulating competition at the airport and leading to some market changes.
Southwest hasn't grown in Denver as rapidly as it's grown in other cities, but it's now the third-largest carrier at D.I.A. with about four percent of the market.
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