Frontier has dropped a few routes to just $20 each way ($39 round-trip) for winter travel.
Availability is limited so you must be somewhat flexible to find the lowest price. Sale fares are valid Tuesdays and Wednesdays through March 14, with a 7-day advance purchase required. Many routes have limited frequencies so be sure to check out the specifics in the fare details on your route.
Tickets must be booked by 11:59 p.m. ET, February 2, or before seats sell out.
Nonstop fares include:
A few more routes combing the $20 one-way fare with another slightly higher fare include:
These fares all work in reverse as we well. Keep in mind that Frontier charges extra for any bags larger than a small personal item. Pack super light to get the lowest price. Checked bag fees start at $25 each way.