Frontier's current St Patrick's Day sale is good for nonstop domestic travel on from April 14 through May 21.

Tickets must be booked by March 18.

Round-trip fares include:

Atlanta to Philadelphia $88 round-trip, nonstop

Atlanta to Cleveland $88 round-trip, nonstop

Atlanta to Indianapolis $88 round-trip, nonstop

Atlanta to Orlando $88 round-trip, nonstop

Atlanta to Washington DC $88 round-trip, nonstop

Atlanta to Austin $88 round-trip, nonstop

Atlanta to Chicago $88 round-trip, nonstop

Atlanta to Trenton $88 round-trip, nonstop

Austin to Denver $88 round-trip, nonstop

Charlotte to Trenton $88 round-trip, nonstop

Cincinnati to Ft Lauderdale $88 round-trip, nonstop

Cincinnati to Dallas $88 round-trip, nonstop

Chicago to Philadelphia $88 round-trip, nonstop

Denver to Phoenix $88 round-trip, nonstop

Denver to Dallas $88 round-trip, nonstop

Denver to Houston $88 round-trip, nonstop

Denver to Kansas City $88 round-trip, nonstop

Raleigh-Durham to Trenton $88 round-trip, nonstop

Washington DC to Orlando $88 round-trip, nonstop

Above image via Shutterstock