Southwest Airlines ( LUV) Thursday unveiled the details of its plans to fly out of Denver. The Dallas-based low-cost airline, which last week announced it would enter the Denver market, will begin service from the Mile High City on Jan. 3, with a total of 13 daily flights to these cities: Chicago, Las Vegas and Phoenix. One-way fares will start at $59. Southwest initially will occupy two gates in the C Concourse of the Denver airport and will have about 40 local employees. The airline expects over time to beef up its presence in Denver, where Frontier Airlines ( FRNT) and UAL's ( UALAQ) United Airlines maintain hubs. "These destinations are just the beginning for Southwest in Denver. We look forward to growing with the demand here," said Gary Kelly, Southwest's CEO. "Denver is a market that has been a significant gap in Southwest's system for many years, and we can now connect Denver customers into our coast-to-coast operations." Southwest shares were up a penny to $15.59.