FlyerTalk Evangelist
Join Date: Aug 2011
Location: Barcelona, London, on a plane
Programs: BA Silver, TK E+, AA PP, Hyatt Globalist, Marriott LT Plat, Hilton Diamond
Posts: 13,113
You can certainly book LAN Colombia domestic flights online via ba.com by moving your Avios over to BAEC.
Not sure why you would want to book with iberia.com since the award would be non-refundable (and an obvious hassle)