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

The two airlines are running another joint flight sale this week, with cheap fares on over 100 domestic routes. Prices start at $126 round-trip, and the following rules apply:

– You can fly now through June 25.

– No Friday or Sunday flights.

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

– 14-day advance purchase required.

– Book flights by 11:59pm PT May 23.

See a full list of routes and prices on the AirTran and Southwest websites.

Compare Cheap Domestic Flights

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