LATAM is bringing back a route that it cut years ago, adding some competition between the United States and Argentina. Thanks to @IshrionA for flagging this.
LATAM resumes Miami to Buenos Aires flights with 787s
As of December 1, 2025, LATAM plans to launch daily, year-round flights between Miami (MIA) and Buenos Aires (EZE). The service will operate with the following schedule:
LA543 Miami to Buenos Aires departing 10:15PM arriving 8:55AM (+1 day)
LA542 Buenos Aires to Miami departing 10:55AM arriving 5:50PM
The 4,405-mile flight is blocked at 8hr40min southbound and 8hr55min northbound. LATAM will use a Boeing 787-8 for the route for the first month, and then as of January 2025, it’ll be operated by a larger Boeing 787-9.
LATAM operated this route up until several years ago, when the South American airline group had an Argentina subsidiary. However, LATAM Argentina ceased operations in 2020, following the start of the pandemic, and that’s when all long haul service from Argentina on LATAM stopped.
LATAM will now be operating this as a fifth freedom flight, since the airline no longer has an Argentinian subsidiary. We’ve seen Argentina liberalize its aviation market in recent times, increasingly adopting an Open Skies policy. So it’s my understanding that LATAM Chile will be operating this service.
How this new route fits into the competitive landscape
Miami to Buenos Aires is a market with a lot of service, though not necessarily many players. As it currently stands, there are up to seven daily flights, with four being operated by American, and three being operated by Aerolineas Argentinas. So it’s already a well served market, though it’s nice to have a third competitor.
LATAM isn’t part of a major alliance, but it does have a joint venture with Delta, given Delta’s equity investment in the airline. LATAM also has partnerships with other individual airlines. Presumably the Miami route is primarily about serving the local market, given the amount of demand.
LATAM has a massive network out of Miami, with flights currently operating to Bogota (BOG), Cancun (CUN), Fortaleza (FOR), Lima (LIM), Punta Cana (PUJ), Quito (UIO), Santiago (SCL), and Sao Paulo (GRU). So in terms of major Latin American destinations, Buenos Aires was certainly lacking.
Bottom line
As of December 2025, LATAM will be launching daily nonstop flights between Miami and Buenos Aires. This is the resumption of a route that operated back when the LATAM Argentina subsidiary existed, so I’m happy to see this service make a comeback. It’ll be a nice alternative to the existing American and Aerolineas Argentinas service in the market.
What do you make of LATAM adding Miami to Buenos Aires flights?
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