For now, I have been able to price SFO-LHR, FCO-ATH, ATH-SFO on United.com for 3 tickets for 180,000 miles + $531.78 (taxes). Funny thing is tax from SFO - LHR is $18 for all 3, and other 2 flights add over $500 in taxes. Is it possible to lower the taxes somehow?
Possible to add another open jaw (like Zurich or Berlin) in this route somewhere? I only have one open jaw right now.