Alaska Airlines confirms termination of LATAM Airlines codeshare

Alaska Airlines has confirmed that its codeshare agreement with LATAM Airlines, which included flights operated by Horizon Air and SkyWest Airlines, is no longer effective, public filings showed.

In a notice to the Department of Transportation (DOT) on December 29, 2025, Alaska Airlines, as well as Horizon Air and SkyWest Airlines, notified that its codeshare agreement with LATAM Airlines “is no longer effective.”

Alaska Airlines has already removed LATAM Airlines from its list of partners on its website, with the South American airline group, which has multiple air operator’s certificates (AOCs) across the continent, still listing the United States-based carrier as one of its codeshare partners.

Cirium’s Diio Mi showed that in December, LATAM Airlines placed its code on domestic Alaska Airlines’ flights from Los Angeles International Airport (LAX), Orlando International Airport (MCO), and Seattle-Tacoma International Airport (SEA), which includes flights operated by its regional subsidiaries and/or capacity providers.

The two carriers applied to receive approval for their codeshare agreement in March 2016, the DOT’s records showed. At the time, LATAM Airlines was still part of the oneworld alliance, which Alaska Airlines eventually joined on March 31, 2021. However, the South American airline group had already left oneworld, ending its membership on May 1, 2020.

Nevertheless, the initial codeshare agreement covered “LATAM's flights serving Los Angeles and Orlando for the purpose of transporting LATAM's Chile-US and Chile-Canada traffic,” with both airlines listing 18 initial routes that originate at either LAX, MCO, or SEA.

In November 2017, the pair applied to expand their codeshare agreement “for the purpose of transporting LATAM's Chile-US/Canada/Mexico/Costa Rica traffic.” While the initial application focused largely on flights from/to LAX, the follow-up application included new routes from New York John F. Kennedy International Airport (JFK) and San Francisco International Airport (SFO), as well as the aforementioned trio of LAX, MCO, and SEA.

The November 2017 application expanded the codeshare agreement with 74 new routes, including destinations in Canada, Costa Rica, and Mexico.

In December 2017, the DOT approved the expanded route network of the partnership, which included the condition that either of the parties must “notify the Department immediately if the codeshare agreement under which these codeshare services are operated is no longer in effect or if the carriers decide to cease operating all or a portion of the approved code-share services.”

LATAM Airlines’ allegiances changed in September 2019. Then, Delta Air Lines acquired a 20% stake in the South American carrier for $1.9 billion, which also included an additional $350 million investment “to support the establishment of the strategic partnership.”

The transaction was closed in December 2019, with the US airline saying that once their partnership is fully implemented, it will “unlock growth opportunities for both airlines and offer significantly expanded travel options for customers, with access to 435 destinations worldwide.”

However, the South American carrier has not yet joined SkyTeam. In an interview with AeroTime, Roberto Alvo, the Chief Executive Officer (CEO) of LATAM Airlines, said that while the airline always retains the option of joining an alliance, it is not the company's priority right now, and it has no short-term plans of doing so.

Delta Air Lines also acquired four Airbus A350-900s from LATAM Airlines and assumed orders for 10 additional aircraft of the type. The four A350-900 aircraft, as well as an additional five, would eventually join Delta Air Lines’ fleet.

Another quartet of A350-900s would eventually leave the South American carrier’s fleet and join Lufthansa Group’s operations, and are now flown by Edelweiss, the leisure subsidiary of Swiss International Air Lines (SWISS), as HB-IHA, HB-IHB, HB-IHC, and HB-IHF.