American Airlines have roundtrip airfares travelling to and from San Francisco (SFO) and New Orleans (MSY) for $176 including taxes and carrier imposed fees. This makes 1 stop.
Travel Availability:
Departs SFO: April 11, 12, 14
Returns SFO: April 12, 14, 18-21, 25
Departs MSY: April 12
Returns MSY: April 14, 16; May 2, 16
Use dates and book it on Expedia , Priceline , Orbitz , American Airlines or CheapOAir
Sample itineraries attached for both routings