While SFO to Barcelona for $537 is not necessarily a good May 2017 ticket price given recent low fares, this American Airlines deal is a great deal for mid-August travel with ticket prices in $540s.
United Airlines is competing from San Jose SJC with similar prices for same travel period. British Airways also has similar prices from SJC to Barcelona.
These are the kinds of discount fares we can expect in 2017 with both SJC and SFO competing for European traffic.
American Airlines San Francisco SFO – Charlotte CLT – Barcelona BCN – CLT – SFO
$544.06 round trip Sat August 12 – Wed August 23
United Airlines San Jose SJC – Newark EWR – Barcelona BCN – EWR – SJC
$542.96 round trip Sun Aug 13 – Tue Aug 22
American Airlines San Francisco SFO – Charlotte CLT – Barcelona BCN – Chicago ORD – SFO
$536.96 round trip Mon May 8 – Fri May 19
