Take 75% off your next Frontier flight for fall/winter travel. Fares start at just $37 roundtrip.

Use promo code SAVE75 when booking on FlyFrontier.com to take 75% off the base fare for nonstop domestic flights on Tuesdays, Wednesdays, Thursdays, and Saturdays, through December 15, 2018, and Tuesdays/Wednesdays, from January 8 through March 6, 2019. An advanced purchase of 10-days is required and blackout dates apply November 17-27, 2018, and February 19, 2019.

The discount does not apply to taxes nor Frontier's online booking fee, which is labeled a "Carrier Interface Charge". This means some routes still won't have a very big price drop even with the big sticker shock of 75% off. However, there are plenty of routes where we are seeing some big price drops. The discount can also be applied to one-way flights.

If you are unfamiliar with Frontier Airlines, please read our guide on Everything You Need to Know Before You Fly Frontier.

There are specific routes excluded from this promo code sale. You may have to click around to find available dates since Frontier operates about half of the route network on just a few days each week. Click on the fare details for more info on exact dates each route is available.

Tickets must be booked by 11:59 pm ET, October 15, 2018.

A sample of nonstop fares include:

Atlanta to Orlando $37 roundtrip

Greenville to Orlando $46 roundtrip

Cincinnati to Orlando $72 roundtrip

Denver to Las Vegas $72 roundtrip

Minneapolis to Fort Myers $72 roundtrip

Philadelphia to Miami $74 roundtrip

St. Louis to Las Vegas $74 roundtrip

New York to Orlando $74 roundtrip

Raleigh to Phoenix $78 roundtrip

Philadelphia to Tampa $79 roundtrip

Portland, ME to Orlando $79 roundtrip

Cincinnati to Las Vegas $79 roundtrip

St. Louis to Orlando $79 roundtrip

Philadelphia to Tampa $79 roundtrip

Cleveland to Orlando $81 roundtrip

Providence to Tampa $82 roundtrip

Chicago to Las Vegas $82 roundtrip

Atlanta to Denver $84 roundtrip

Austin to Las Vegas $84 roundtrip

Harrisburg to Orlando $86 roundtrip

Washington D.C. to Las Vegas $92 roundtrip

Atlanta to Las Vegas $92 roundtrip

Indianapolis to Las Vegas $93 roundtrip

Raleigh to Las Vegas $97 roundtrip

Philadelphia to San Juan $123 roundtrip

These fares all work in reverse and there are many more routes available as well. Lowest fares may not be available throughout the entire travel period. You'll have to decline all extras to get the lowest price.

Keep in mind that Frontier charges extra for any bags larger than a small personal item (small backpack, large purse, etc.). Pack super light to get the lowest price. Checked bag fees start at $25-$30 each way. Larger carry-on bag fees start at $30-$35 each way.

If you want to avoid all extra fees, read How to Pack in Just a Personal Item Sized Bag.

Above image by Colin A. Pierce via Shutterstock.