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Save on 200 winter and spring routes. (It's the best price we could find for select routes on comparable 3-star carriers by $24.) Buy Now at DealBase Tips On the DealBase landing page, click on "Southwest Airlines" in the top line to see this sale. We found this price on flights departing on February 11 from Nashville, TN (BNA) to Atlanta, GA (ATL). All prices, dates, and booking details were valid at the time of publication. Book this travel deal today for flights from January 21 through May 14.