Originally Posted by
willieram
Ok so here I go. It seems I screwed things up as I started to accumulate miles in Lan and AA, but within their own FFP memerships. I used to be Gold on AA but now I only have 18K Miles on each program (AAdvantage and LANPASS). So yes, fool of me. Even flew 16K miles on Delta this year (aaargh).
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(7) What is most important to you in a FFP? (upgrades on travel, priority services when flying the airline, extra baggage allowance, good award redemption rates, better award access, free - discounted lounge access, etc.)
Reply: Upgrades and Lounge Access.
(8) Preferred Airlines
Reply: LAN, AA
Welcome to the forum ^
Not many (none?) with detailed knowledge on LAN ffp post here. Hopefully others will offer an opinion
Collecting miles in one ffp would be best, but some low priced flights may not may not get miles in AA or LAN ffp if booked other as a flight with the other.
As a general rule upgrades are only available with airline miles on a flight number and operated by the airline with your freq flyer miles.