US Airways is handing out 'gifts' in commemoration of it's merger with American Airlines. Flights from San Francisco, CA to San Juan, PR are available for just $267 return or $133 one-way.
The $267 only works on these dates as far as we can see. However for about $100 the trip is available for many dates of the year.To search dates use ITA Matrix 30 day search.
** Only available after card approval. Minimum spend of $3,000 in the first 90 days required. Points redemption only available for purchase made with eligible travel merchants.