America's most hated airline is offering an 85% discount on its tickets for one day only

• Spirit Airlines is offering an 85% discount on certain flights for one day only.
• All tickets must be booked by 11:59 pm on Wednesday, May 2 using the promo code "85PCT."
• The fare sale covers travel between May 9 and June 13 as well as September 5 and October 31, 2018.
• The Florida-based ultra-low-cost carrier is offering the 85% discount to celebrate is 85% on-time performance rating in March.

---

Spirit is all about cheap no-frills flying.

And on Wednesday, Spirit flights are getting even cheaper.

For one day only, Spirit is offering an 85% discount on select flights.

To qualify for the deal, travelers need to have their flights booked by 11:59 pm on Wednesday, May 2 using the promo code "85PCT."

The 85% off fare sale covers travel between May 9 and June 13 as well as September 5 and October 31, 2018.

However, there's some serious fine print that goes along with the sale. First, all tickets must be purchased at least seven days before travel.

In addition, the discount applies to only roundtrip flights or flights purchased as part of a vacation package. The coupon also does not cover the passenger usage charge, regulatory compliance charge, and fuel charge.

And then there are the destinations and routes that are excluded from the deal. There are a lot of them. There are major restrictions on travel from Las Vegas, Denver, and Dallas. In addition, many destinations in the Caribbean, Central America, and South America have been cut out completely like Bogota, Colombia, San Pedro Sula, Honduras, and Punta Cana, Dominican Republic.

However, even with these restrictions, there will likely be some seriously good deals.

Spirit Airlines is an ultra-low-cost carrier. Its unbundled customer experience is targeted at budget-conscious consumers who don't necessarily require the frivolities offered by full-service or even low-cost airlines like Southwest. As a result, many find the travel experience to be cramped and underwhelming. Spirit finished last in Consumer Reports' latest airline rankings.