The spring months are March, April, and May. In this period, Southwest plans an average of 4,016 daily flights (takeoffs and landings combined). Its offering has increased marginally year-over-year.

Prefer Newsweek on Google to see more of our trusted coverage when you search. Spirit Airlines has announced several new flight routes it will be starting this year, including a host of limited spring ...

Low-cost air carrier Frontier Airlines is launching more than one dozen extra routes this spring with new service to destinations from coast to coast and in the Caribbean. The airline is also offering ...