If you’ve been in denial about the end of summer by putting off your fall trip planning, it’s time to stop procrastinating. Southwest is running a sale until September 12, with flights as cheap as $49 one way. Fares are valid for travel between September 24 and March 4, 2020, and tickets must be purchased at least 21 days in advance, so if you’re looking for a late September getaway, you’d better hustle.

Many major US cities are included in the sale, though not all of them are eligible for the $49 fare. Here are some of the best deals available right now:

  • Baltimore to Boston for $49
  • Atlanta to Nashville for $49
  • San Jose to Seattle for $49
  • Reno to San Jose for $49
  • Raleigh to Tampa for $49
  • Boston to Nashville for $59
  • Cincinnati to Chicago for $59
  • Washington, DC to Providence for $59
  • Spokane to Boise for $59

Unlike other airline sales, Southwest does allow checked baggage with these fares, which can be a huge money saver. Note that tickets are not expected to disappear overnight — but since you only have until September 12 to buy, it’s probably best not to drag your feet.