About once a month Frontier Airlines has a promo code sale of anywhere from 25-75% off flights, but they are usually only valid on Tuesdays and Wednesdays.

Right now until tomorrow night you can grab 50% off flights from Jan. 17 through Valentines Day, with only Fridays and Sundays excluded.

This could score you some cheap flights if you’re flexible with your travel dates.

Here are a couple trans-continental flights I’m interested in:

This isn’t the cheapest Frontier trans-con I’ve ever seen, but it’s close:

Make sure you click the view calendar option to see the cheapest days to fly.

Here is SF-Atlanta:

Frontier also has “Buck Fare” sales from time to time, where they offer flights from $20.

My best deal was SF-Chicago $50 RT for a weekend trip.

As usual, it’s cheaper if you’re a member of Frontier’s Discount Den club, which I found to be well worth the $50/year price last year when I flew Frontier a ton.

Here are some previous posts I’ve done on Frontier:

Frontier emerges from blizzard with another 75% off promo

Review: Frontier Airlines credit card — cute, but not rewarding

How to earn Alaska Airlines elite status by flying Frontier Airlines

Why Frontier Airlines is so misunderstood

Happy 2017!