Update: this popular deal may have sold out. See more deals >

Frontier is offering cheap fares on 62 domestic routes, to compete with the current Southwest/AirTran offer. The travel period is similar: August 20 through December 18. Flights are slightly more expensive, starting at $118 round-trip. These are the rules:

– Sale fares are one-way only; round-trip purchase not required.

– You can fly any day of the week except Friday or Sunday.

– No travel on August 29-30, September 2, November 23-27, and November 30 – December 2.

– 21-day advance purchase required.

– Book tickets by 11:59pm ET June 13.

Find cheap flights for Father’s Day

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