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

Southwest has posted a new domestic fare sale this week, with discount fares on over 50 routes. Advertised prices start at $116 round-trip. These are the rules:

– Fly April 22 through through June 7 and August 25 through October 30.

– No travel on May 22, 23, and 26.

– No Friday or Sunday flights.

– 14-day advance purchase required.

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

– The offer is valid until 11:59pm local time tonight.

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