Frontier Airlines has added three new routes from San Diego, offering travelers additional options to fly to Austin, Chicago, and Salt Lake City. All three destinations are already served with a ...

Southwest and Spirit Airlines. Cincinnati is served by Allegiant Air and Delta, while Phoenix has service by American and Southwest. The new routes mean Frontier is doubling the number of cities ...

Frugal San Diego travelers who don't mind getting less service when they fly got some good news on Tuesday when Frontier Airlines announced three new nonstop routes. The additional cities brings ...