Atlanta to Las Vegas or Vice Versa $186 RT on Delta Airlines (travel Aug-Oct) Nonstop

Delta Airlines have round trip airfares travelling to and from Las Vegas (LAS) and Atlanta (ATL) for $186 including taxes and fees. This is nonstop service. This is Delta’s basic economy fare. See below for details.
Price comparison: Both Spirit & Frontier Airlines have this for $170 with carry-on restrictions.
Travel Availability:
Departs ATL: Aug 14, 15, 21, 22, 29, 30; Sept 4, 11, 18, 25, 26; Oct 24
Departs LAS: Aug 8, 9, 15, 16, 19, 22, 23, 30; Sept 6, 12, 13, 19, 20, 26; Oct 3, 4, 7, 14, 17
Use dates and book it on Expedia , Priceline , Delta Airlines or Orbitz
THE FOLLOWING TERMS APPLY TO YOUR BASIC ECONOMY FARE:
No seat assignment is available until after check-in
Refunds and any ticket changes, including same-day changes, are not permitted
No paid or complimentary access or upgrades to premium seats or products, including Delta Comfort+™ or Preferred Seats, and no paid access to Priority Boarding
Terms apply to all customers including but not limited to Medallion® members and Sky Team® elites.
post regarding carry-on bags : "Delta doesn’t restrict from carry on bags. There is only the government rule of 1 + 1 carry ons allowed. I get the basic economy fare on Delta sometimes and it really saves! Checking in the first bag is still the same cost – $25"