Spirit Airlines has a promo code valid for puchase today only. Save up to 50% off the base fare for travel this summer and fall. Fares start at just $63 roundtrip.

Just enter promo code 50PCT when booking on Spirit.com to apply a 50% discount to the base fare for travel on Tuesdays and Wednesdays, from July 24 through August 29; and Mondays, Tuesdays, Wednesdays, Thursdays, and Saturdays, from September 4 through November 14. Avoid blackout dates on October 4, 6, and 8.

Spirit's fares have crept up lately and it's rare to see sub $100 roundtrip fares on most routes these days. Lowest available fares are generally not available during peak summer months, but flights will still be discounted and this may be one of your last chances to get a discount for summer travel.

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 large list of excluded markets in this sale, however, I'm stiill seeing the listed routes that I search are working with the promo code. At time of posting, there are actually no routes excluded from this sale, which is rare. Spirit could fix this bug at any moment.

If you are unfamiliar with Spirit, please read our guide on How to Fly Spirit Airlines.

Promo code expires at 11:59 pm ET, tonight, July 17, 2018.

A sample of fares include:

Boston to Atlanta $63 roundtrip, nonstop

Houston to Las Vegas $65 roundtrip, nonstop

Los Angeles to Las Vegas $66 roundtrip, nonstop

Columbus to Myrtle Beach $67 roundtrip, nonstop

Seattle to Las Vegas $70 roundtrip, nonstop

Fort Lauderdale to San Juan $94 roundtrip, nonstop

Atlanta to Philadelphia $109 roundtrip, nonstop

Los Angeles to Minneapolis $112 roundtrip, nonstop

Boston to Tampa $113 roundtrip, nonstop

Philadelphia to Fort Lauderdale $117 roundtrip, nonstop

Chicago to Fort Myers $120 roundtrip, nonstop

Newark to Los Angeles $124 roundtrip

Los Angeles to Orlando $124 roundtrip

Detroit to San Diego $127 roundtrip, nonstop

New York to Las Vegas $132 roundtrip

Cleveland to Los Angeles $133 roundtrip, nonstop

Atlanta to Los Angeles $145 roundtrip, nonstop

Newark to New Orleans $153 roundtrip, nonstop

Boston to Los Angeles $160 roundtrip

Baltimore to Las Vegas $163 roundtrip, nonstop

Orlando to Guatemala $199 roundtrip, nonstop

Houston to San Salvador $224 roundtrip, nonstop

New Orleans to Medellin $244 roundtrip

Chicago to Cartagena $274 roundtrip

Newark to Cancun $285 roundtrip

Fort Lauderdale to Lima $315 roundtrip, nonstop

Boston to Panama $320 roundtrip

Atlanta to Guayaquil $363 roundtrip

Denver to Lima $425 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 each way. Larger carry-on bag fees start at $35 each way.

Header image by Ken Wolter via Shutterstock.

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