PHX to CPT
 

Looking to fly to Capetown end of March. May board a ship and sail from there to Southampton and return home from London. Otherwise fly it roundtrip.

Have 200K+ Membership miles, 200K+ Americawest miles, 90K+ Continental miles.

Can't decide best way to travel FC.

Do I....
use 125K Americawest miles for FC via British?

buy a ticket and use miles to upgrade??

Would appreciate the advice of any and all!