Southwest Airlines via DealBase discounts select Southwest Airlines 1-Way Fares Nationwide, with prices starting at $48.98 during its Spring & Fall Travel Sale. (On the DealBase landing page, click on "Southwest Airlines" in the top line to see this sale.) That's the lowest price we could find for these routes by at least $21, although we saw select routes for $10 less last week. This price is valid for flights departing on August 21 from Atlanta, GA, (ATL) with arrival in Nashville, TN (BNA). Note that blackout dates and other conditions may apply. Book this travel deal by April 19 for travel from April 24 to October 31.

Of note, you can sign up for a Southwest Rapid Rewards® Premier Business Credit Card from Chase and earn 60,000 points when you spend $3,000 or more on purchases in the first three months your account is open.

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