Southwest has lowered fares for travel in spring and again from late summer through fall.

Sale fares are valid for nonstop travel on Tuesdays, Wednesdays, and Saturdays, from April 28 through June 3, and again from August 25 through October 28.

Some flights may be operated by AirTran. Tickets must be booked by 11:59pm, April 23.

Fares include:

Atlanta to Columbus $204 round-trip, nonstop

Boston to Columbus $288 round-trip, nonstop

Austin to Ft Lauderdale $240 round-trip, nonstop

Newark to New Orleans $210 round-trip, nonstop

Louisville to Orlando $248 round-trip, nonstop

Las Vegas to Washington DC $298 round-trip, nonstop

Denver to Minneapolis $212 round-trip, nonstop

Omaha to Phoenix $288 round-trip, nonstop

Denver to Las Vegas $188 round-trip, nonstop

Baltimore to Cleveland $188 round-trip, nonstop

Indianapolis to Tampa $262 round-trip, nonstop

Nashville to New York $228 round-trip, nonstop

Washington DC to Tampa $178 round-trip, nonstop

Boston to Chicago $230 round-trip, nonstop

Chicago to New York $242 round-trip, nonstop

Houston to New York $260 round-trip, nonstop

Austin to Los Angeles $298 round-trip, nonstop