Frontier Airlines 'all-you-can-fly' pass includes unlimited flights for $399

Frontier Airlines announced a new "all-you-can-fly" summer pass.

It costs $399 and includes nearly unlimited flights between May and September. There are currently more than 100 destinations.
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Flights will cost 1 cent plus taxes and fees for pass-holders. This includes charges for seats or checked baggage.
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Frontier also plans to add new non-stop services between multiple cities and Puerto Rico this summer.

Flights will be available to book starting May 2.