American Airlines has a very low $236 round trip fare for San Francisco to Bogota, Colombia. Routing via Miami and DFW earns about 8,000 flight miles as redeemable miles.
There is no advance purchase requirement. I priced this itinerary for a departure tomorrow.
American Airlines San Francisco SFO – Miami MIA – Bogota BOG Colombia – Dallas DFW – San Francisco SFO
$235.60 Tuesday September 1 – Tuesday September 8
Flight Miles: 7,995 miles
American Airlines SFO-BOG fares from $228 to $248 are available every month into July 2016. Many of the lowest fare itineraries seem to require a full day in Dallas DFW on the return.
This weekend I watched a TV show about high quality gemstone emeralds from Colombia. Bogota is an emerald trading center among many of its other trades.