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

Southwest has cut prices right across its network. Over 100 routes are on sale, good for travel through the winter. The sale is valid until Thursday only. These are the rules:

– You can fly December 4 through December 18, and again from January 7 through February 12.

– Sale fares are one-way only; round-trip purchase not required.

– No Friday or Sunday flights.

– No advance purchase required.

– Sales expires 11:59pm PT October 10.

Find the cheapest domestic airfares here

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