JetBlue Airways Corp. is offering an "all-you-can-fly" pass where passengers can book an unlimited amount of flights over a month for $599.

The airline said Wednesday that pass holders will be able to fly to any of JetBlue's 56 destinations between Sept. 8 and Oct. 8.

Customers must book the pass by Aug. 21.

Pass holders can book travel within three days before a desired departure date. Taxes are not included in the deal, and a $100 change or cancellation fee applies.

"No shows" for flights will incur a $100 fee, and the pass will be suspended until the fee is paid.

JetBlue's frequent fliers will get 35 TrueBlue points for buying the pass.

In addition to the 56 cities JetBlue serves in the US, Mexico, South America and the Caribbean, the discount carrier will add service to Baltimore on Sept. 9 and to Barbados on October 1.

Shares of the company added 17 cents, or 3.2 percent, to $5.50 in afternoon trading.