Update: this popular deal may have sold out. See more deals >
Frontier has released a new discount coupon, valid for use on premium Classic Plus fares only. You can save $25 in each direction, flying February 8 through July 10.
To redeem the offer, book flights at the Frontier website before 11:59pm ET January 31, and use the promo code PLUS. This code is valid on both one-way and round-trip bookings, and the discount is taken from your base fare only (taxes and fees applied separately).
Remember to book before midnight Thursday!