A baggage tug passes by the tails of Frontier Airlines Airbuses sitting at the gates of the A concourse of Denver International Airport in this photograph taken on Saturday, July 15, 2006, in Denver. Frontier Airlines Holdings Inc. releases first-quarter earnings. (AP Photo/David Zalubowski)
The new flights are now available for purchase through Sept. 10.
Frontier will add a fifth flight to Midway in Chicago on May 16, a sixth flight to Dallas/Fort Worth International Airport on May 13, a third flight to LaGuardia in New York on March 13 and a fourth flight to Sacramento International on April 18.
Frontier also announced it will resume its nonstop seasonal summer service between Denver and Fairbanks, Alaska on May 13. Frontier Airlines is a subsidiary of Republic Airways Holdings Inc.