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

Southwest has just posted a new winter flight deal. Prices are down on over 50 domestic routes and the sale is valid until midnight Thursday.

These are the rules:

– You can fly December 3 – December 17 and January 6 – February 11

– Blackout dates apply on some routes — details here.

– No Friday or Sunday flights.

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

– The offer is valid until 11:59pm October 16.

Search Cheap Flights for Fall

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