Related: Starwood AMEX Linky (Free for first year, Earn 10,000 Starpoints With First Purchase, and 30,000 more Starpoints with your first $15,000 in purchases) The US Mint should be able to help you there…
Before getting to the promo, I’ll just cover some background info on LAN.
As I’m sure you know already, 20,000 Starpoints transfers into a whopping 50,000 LANPASS kms. (I’ve done this transfer many times and can confirm that you will indeed receive 50K LAN kms. regardless of whatever any CS rep may tell you)
LAN has a pretty nice reward table. (you need to set the country to USA/English on the LAN page, and then return and click this link again to get to the table) There is a separate reward table for LAN flights and for One World flights.
Best part? LAN is one of the few international carriers that doesn’t charge any fuel surcharges on mileage tickets.
The LAN reward table is based on destination. For example a ticket from the US to Brazil is 48,000 kilometers. You are also allowed to add on AA or Alaska flights to get you to a LAN gateway city (JFK, LAX, MIA), and a stopover is allowed.
The One World chart is kilometer based and is valid for travel on any One World airline. You can check the distance in kilometers on the great circle mapper.
For example a round-trip flight from JFK to Tel Aviv via London on British Airways is 18,296 Kilometers. That trip would fall into a zone 4 One World award which costs 95,000 kms in economy, 140,000 kms in business, or 190,000 kms. in first. With the 20,000 Starpoints to 50,000 kms. transfer and no fuel surcharges those all make for excellent values.
At any rate here is the link for the current South America promo. In LAN coach the discount is up to half off the normal mileage rates. In LAN Premium Business (which has some great reviews) you need to book 2 tickets to get up to 50% off.
Here are some sample sale rates:
Miami – Caracas: 24,000 kms.
New York – Lima: 35,000 kms.
Los Angeles – Santiago: 49,000 kms.
New York – Buenos Aires: 49,000 kms.
Miami – Caracas: 110,000 kms. for 2 RT tickets.
New York – Lima: 150,000 kms. for 2 RT tickets.
Los Angeles – Santiago: 200,000 kms. for 2 RT tickets.
New York – Buenos Aires: 200,000 kms. for 2 RT tickets.
I checked a random date (from 07/08-07/15) for 2 tickets from NYC to Buenos Aires in Premium Business and found availability for 100,000 kms. per ticket with taxes of $66.
With the exchange rate for Argentine Pesos at historically favorable rates (currently about 3.8 per dollar) you’ll get some great bang for buck down in Buenos Aires.
For the up to 50% off promo:
-Tickets must be booked by 07/08.
-Travel must be complete by 12/23.
-Departure date blackouts are from 07/16-08/12.
-Travel is only valid on LAN, not on partners.
-As with all LAN award tickets, date changes are free. However if you are changing dates you must travel within the valid dates of the promo.
-As with all LAN award tickets, you can hold the reservation for 3 days on Lan.com.