Frontier Airlines (F9, Denver International) has filed for an Initial Public Offering (IPO), papers lodged with the US Securities and Exchange Commission (SEC) have revealed.

The Colorado-based budget carrier plans to raise approximately USD100 million from the offering which will be used for obligations under the Pilot Phantom Equity Agreement for the benefit of the Participating Pilots as well as general corporate expenses.

Frontier plans to list under the symbol FRNT but has not selected an exchange nor has it listed any pricing terms or timeframes.

Citigroup, Deutsche Bank, Evercore Group, J.P. Morgan, Merrill Lynch, Barclays Capital, Cowen & Company, Credit Suisse, Goldman Sachs, Raymond James, and UBS Investment Bank are the IPO's designated underwriters.

Frontier Airlines is owned by Arizona-based LCC investment specialists Indigo Partners LLC.