The carrier’s latest sale, which dropped on April 1 (April Fools’ Day), is no joke, officials wrote in a press release.

Along with a free bag, some flights will be discounted to as low as $39 one-way for flights during the same time period.

The low-cost air carrier is offering a promotion with reduced fares a free checked bag for travel through summer.

Frontier is again offering a free checked bag on flights departing April 22 through Aug. 18, according to a Tuesday press release.