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

Frontier's summertime deal appears to be in response to Southwest Airlines, which recently announced it will start charging for checked bags.

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 announced the limited time offer a week after rival Southwest Airlines ended its "bags fly free" policy for most travelers.

Frontier Airlines is bringing back free checked bags for a limited time this summer. Here's how to get one on a trip out of Nashville.

Frontier pounced on free bags as a winning value proposition after Southwest Airlines dropped its “two bags free” brand-defining policy.

Last week, Southwest Airlines announced an end to its long-time policy of two-free checked bags. Frontier officials say customer response will help determine if its free service will become permanent.

Travelers flying with Frontier Airlines can cross one extra fee off their list this summer: their checked bag.

One airline that wasted no time in responding to Southwest’s decision is Frontier Airlines. The ultra-low-cost carrier has ...

Frontier Airlines is offering a complimentary checked bag, carry-on, seat selection, and flight changes for nonstop flights booked by March 24. This promotion follows Southwest Airlines' recent ...

Frontier Airlines is offering a free checked bag on certain flights this summer. In a statement on Tuesday, Frontier's CEO's Barry Biffle encouraged travelers to "divorce" their old airline and shift ...