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

Southwest has posted a new fare sale, cutting prices on over 50 domestic routes. Advertised fares start at $146 round-trip.

These are the rules:

– You can fly August 25 through December 17.

– No Friday or Sunday flights (this varies on a few routes).

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

– The offer is valid until 11:59pm August 14.

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