Frontier has some super low fares for travel on scattered dates in April/May. Fares start at just $19 one-way and can be combined with other slightly higher fares to secure a great deal on a round-trip flight.

Keep in mind, Frontier charges a $25 fee each way for carry-on bags larger than 18 x 14 x 8 inches. However, these fares are so low that, even with the extra fees, you'll still have considerable savings. Of course, if you are able to travel super light, you won't have to pay any extra fees.

Specific dates available vary by route and tickets must be booked by 11:59pm eastern time TODAY, Apr. 7, 2015.

Sample fares include:

Cleveland to Orlando $58 round-trip, nonstop

Denver to Las Vegas $38 round-trip, nonstop

Philadelphia to Charlotte $37 round-trip, nonstop

Atlanta to Minneapolis/St. Paul $78 round-trip, nonstop

Cleveland to Seattle $98 round-trip, nonstop

Denver to Santa Ana $58 round-trip, nonstop

Atlanta to New Orleans $38 round-trip, nonstop

Denver to Miami $98 round-trip, nonstop

Atlanta to Cincinatti $38 round-trip, nonstop

New York to Denver $98 round-trip, nonstop

Houston to Philadelphia $98 round-trip, nonstop

Cleveland to Raleigh $38 round-trip, nonstop

Minneapolis/St. Paul to Trenton $78 round-trip, nonstop

Frontier image via Shutterstock.