Update: this popular deal may have sold out. See more deals >

The latest Frontier sale features cheap fares on 61 domestic routes, good for travel in late winter. The offer is subject to the following rules:

– You can fly between January 7 and February 13, on all days except Friday and Sunday.

– Sale prices are one-way only; a round-trip purchase is not required.

– You must book flights at least 21 days in advance.

– Booking closes 11:59pm ET on December 10.

Compare cheap winter flights here.

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