Given going back is a day flight, I would might consider Norwegian.
If you want lay flight, TAP often has nice one fares.
Personally, I'd use points.
Originally Posted by
scaredflyer
In looking for ways to get back to SFO from London, I came across the following fare for $1572, which a travel agent on this board (who can out himself if he chooses) helped me to book.
London -> SF (Dec. 31)
LHR -> SFO Iberia 7443 Economy (Q)
SF -> Granada, Spain (April 14)
SFO -> LHR AA 6187 First (A)
LHR -> MAD BA 460 Business (J)
MAD -> GRX Iberia 8936 Business (J)
Also worked to other destinations in Spain. (I'm relatively new here so apologies in advance if this should be its own thread/doesn't qualify as a "deal")