[Expired]Frontier Airlines Penny Plus Fare Sales on Most Domestic Flights
- Airfarewatchdog offers Frontier Airlines Penny Plus Fare Sales on Most Domestic Flights, As low as $15 one-way $28 round-trip.
- Travel Period: Now through February 12, 2020, with a 3-day advance purchase.
- Travel Days of the Week: Mondays, Tuesdays, Wednesdays, Thursdays, and Saturdays.
- Deal ends 9/6.