Delta Airlines has a low fare at $304 round trip from San Francisco SFO to San Salvador SAL, El Salvador for most dates from mid-January to early May 2016. Connections can be made via Atlanta, if you want more MQM, or via LAX for shorter travel times.
Delta Airlines San Francisco SFO – Los Angeles LAX – San Salvador SAL, El Salvador
$303.73 Saturday February 13 – Friday February 19
These tickets price in Delta economy V class with a $189 base fare, so few redeemable miles earned with Delta Skymiles. You can earn 50% flight miles on Delta V class in Alaska Airlines Mileage Plan.
SFO-LAX-SAL-LAX-SFO = 5,314 flight miles.
SFO-ATL-SAL-ATL-SFO = 7,118 flight miles.
Spirit Airlines has fares as low as $254 round trip for Los Angeles – San Salvador route.