Spirit Airlines is celebrating a vast improvement in on-time performance by having one of its best promo code sales for purchase today only! Take up to 90% off the base fare for travel this winter/spring. Fares start at just $59 roundtrip.

Just enter promo code 90PCT when booking on Spirit.com to apply up to a 90% discount to the base fare for roundtrip travel on Tuesdays and Wednesdays, from January 15 through May 21, 2019. Avoid blackout dates on February 13, 19, 26, 27; March 6; April 17 & 23.

The discount will only apply to the base fare and not to taxes nor Spirit's booking fees so don't expect to see that large of a price drop on certain routes. There is also a long list of excluded markets for this sale. However, I'm finding that if you search directly from the sale page, all routes are being discounted, even if they are listed as excluded.

If you are unfamiliar with Spirit, please read our guide on How to Fly Spirit Airlines (and Actually Enjoy the Experience).

Promo code expires at 11:59 pm ET, tonight, January 8, 2018.

A sample of fares include:

Austin to Las Vegas $59 roundtrip, nonstop

Atlanta to Detroit $60 roundtrip, nonstop

Boston to Orlando $61 roundtrip, nonstop

Columbus to Myrtle Beach $61 roundtrip, nonstop

Philadelphia to Orlando $61 roundtrip, nonstop

Chicago to Tampa $61 roundtrip, nonstop

Austin to Fort Lauderdale $61 roundtrip, nonstop

Columbus to Tampa $89 roundtrip, nonstop

New York to Dallas $104 roundtrip, nonstop

Boston to Las Vegas $107 roundtrip, nonstop

Baltimore to Las Vegas $107 roundtrip, nonstop

Dallas to San Diego $107 roundtrip, nonstop

Newark to Las Vegas $108 roundtrip, nonstop

Phoenix to Fort Lauderdale $111 roundtrip

Boston to Oakland $112 roundtrip

Boston to Los Angeles $113 roundtrip

Seattle to Fort Lauderdale $122 roundtrip

Chicago to Seattle $112 roundtrip, nonstop

Detroit to San Diego $119 roundtrip, nonstop

Detroit to Montego Bay $211 roundtrip, nonstop

Fort Lauderdale to Cali $248 roundtrip, nonstop

Atlanta to Kingston $267 roundtrip

Routes listed as excluded, but are discounting if you search directly from the sale page. This bug may be corrected at any time.

Oakland to Las Vegas $60 roundtrip, nonstop

Chicago to Orlando $61 roundtrip, nonstop

Chicago to Phoenix $61 roundtrip, nonstop

Atlanta to Las Vegas $104 roundtrip, nonstop

Baltimore to Los Angeles $107 roundtrip, nonstop

Atlanta to Los Angeles $108 roundtrip, nonstop

Philadelphia to Los Angeles $109 roundtrip, nonstop

Detroit to Las Vegas $114 roundtrip, nonstop

Columbus to Medellin $186 roundtrip

Orlando to Medellin $186 roundtrip

Atlantic City to Medellin $186 roundtrip

New Orleans to Medellin $186 roundtrip

Jacksonville to Medellin $188 roundtrip

Fort Lauderdale to Medellin $198 roundtrip, nonstop

Dallas to Santo Domingo $242 roundtrip

Los Angeles to Medellin $275 roundtrip

New York to Panama $281 roundtrip

Chicago to Guayaquil $284 roundtrip

There are many more routes available as well. Domestic routes will work in reverse. Lowest fares may not be available for the entire travel period. You'll have to decline any extras to get the lowest price.

Spirit's Bare Fares only include one small personal item (small backpack, large purse, briefcase, etc.) that will fit underneath your seat. Checked baggage starts at $30-$35 each way. Larger carry-on bag fees start at $35-$40 each way.

As an example booking, after searching directly from the sale page and entering promo code 90PCT, I found seats departing Fort Lauderdale FLL on Tuesday, January 29, returning from Medellin MDE on Wednesday, February 6, for $198 roundtrip.

Featured image courtesy of Spirit.

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