With summer approaching, Frontier Airlines announced Tuesday that it is adding three new routes out of San Diego International Airport, serving Chicago, Austin and Salt Lake City. Set to debut in mid-June, the new flights bring Frontier’s total number of San Diego nonstops to eight. The flight to Chicago O’Hare airport will operate daily starting June 12. The Austin nonstop will be four times a week, starting June 13, and the flight to Salt Lake will operate three times a week, also beginning June 13. “We are thrilled to announce these three additional routes as we continue to grow our presence in San Diego,” said Josh Flyr, vice president of network and operations design for Frontier. “With Frontier’s trademark low fares available on eight nonstop routes from SAN, now is a better time than ever for consumers in Southern California to make Frontier their airline of choice.” Just last year, Frontier introduced nonstops to San Jose and El Paso. In conjunction with the latest announcement, Frontier said it is offering promotional one-way fares of $39 for Salt Lake City flights, $59 for Austin, and $69 for Chicago. To take advantage of the introductory fares, tickets must be purchased by 11:59 p.m. Eastern time on March 31. The promotion covers travel through Aug. 18, except for blackout dates on July 3, 5 and 6. All three cities are already served by other airlines operating out of San Diego. For instance, United and American both fly nonstop to O’Hare while Southwest Airlines flies to the Chicago Midway Airport, said San Diego airport spokesperson Nicole Hall. And Delta, Alaska and Southwest each have flights to Salt Lake City, while Austin is already served by Alaska and Southwest. Hall pointed out that Frontier at one time flew nonstop to Austin, between 2017 and April of 2020. The newest Frontier flights come at a propitious time for the low-fare carrier and the airport, which will debut the first phase of a brand new Terminal 1 in late summer. While the terminal primarily serves Southwest Airlines, Frontier also uses it for its flights. ...read more read less