Miami to Buenos Aires in Economy

No single sweet spot is tagged to the Miami to Buenos Aires economy corridor in our database, which means the opening move here is availability research before any transfer decision. The route operates primarily through LATAM Airlines and Aerolíneas Argentinas, with connecting options via American Airlines through its oneworld partners. Because no one program dominates this lane with a standout cents-per-point return, the binding constraint is finding the seat first, then reverse-engineering which currency to use.

For availability searches, start with a transfer partner and Iberia Avios on the oneworld side, since American flies MIA to EZE and its partner award space surfaces through both programs. Flying Blue, Air France and KLM's program, is worth checking for any codeshare inventory on LATAM-operated metal. LifeMiles (Avianca's program) historically prices South American economy routes at competitive rates and is a consistent first stop for this region. Run each search before committing to anything.

Economy saver space between Miami and Buenos Aires exists, but it is not uniformly available. Peak southern-hemisphere summer (December through February) and Argentine holiday windows compress open inventory significantly. Shoulder months like March through May or September through October tend to show more seats, though "more available" is relative on a route with limited daily frequencies. Set alerts on ExpertFlyer or similar tools and check multiple dates rather than anchoring on a single departure.

On transfer paths, the most relevant bank currencies for this route are Chase Ultimate Rewards, American Express Membership Rewards, Citi ThankYou Points, and Capital One Miles. Chase transfers to a transfer partner and British Airways Avios at 1:1. Amex transfers to a transfer partner, Flying Blue, and Avianca LifeMiles, all at 1:1. Citi transfers to LifeMiles at 1:1 and to Flying Blue at 1:1. Capital One moves to Avianca LifeMiles at 1:1 and to Turkish Miles and Smiles at 1:1, the latter occasionally surfacing American metal on South American routes. None of these transfer ratios add a bonus on the outbound, so the math is straightforward: every point transferred is one program mile received. Transfer only after confirming the seat is held or immediately bookable.

The CPP math on economy here is modest by design. Our conservative valuations place Chase Ultimate Rewards at 2.0¢ per point, Amex Membership Rewards at 2.0¢, and LifeMiles at roughly 1.5¢ per point. A MIA to EZE economy award typically prices between 30,000 and 45,000 miles one-way depending on program and routing. At 35,000 LifeMiles, that redemption needs to clear a cash fare of roughly $525 to hit our 1.5¢ valuation benchmark, a number that is achievable on peak dates but not a given during shoulder season when paid fares can dip. At 30,000 a transfer partner miles with a 2.0¢ benchmark, you need a cash equivalent of approximately $600 to justify the transfer. Run the comparison against current cash fares on Google Flights before touching any points, because economy to Buenos Aires occasionally prices competitively enough that paying cash and preserving miles for a higher-value redemption is the smarter call.

Find space first, then transfer.