Frontier Airlines announced it is launching 20 new routes to compete with other low-fare airlines, including Spirit Airlines , whose executives recently announced the business might not be operating in a year.

In a news release on Tuesday, Aug. 26 , Frontier said it’s committed to being the "number one low-fare carrier in the top 20 U.S. metros." Some of the new routes, set to launch in the winter, are based at Spirit hubs.

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