China Eastern Airlines is set to double the frequency of its ultra-long-haul service connecting Shanghai, Auckland, and Buenos Aires, the world's longest one-stop air route.

The carrier will increase operations on the 20,000-kilometer journey, which uses Auckland as a technical stopover en route to South America, responding to robust demand for both passenger travel and cargo capacity.

Visitor arrivals from Argentina to New Zealand have already surged by 35% since the route launched, signaling strong underlying demand for the connection.

The expansion comes as the airline industry faces what analysts have described as a "global stress test," with carriers fighting for every available cargo slot amid constrained capacity.

By increasing frequency on this strategic corridor, China Eastern aims to capture higher yields from freight shippers and travelers seeking direct links between Asia and South America without transiting through traditional hubs in Europe or North America.

Visitor arrivals from Argentina to New Zealand have already surged by 35% since the route launched, signaling strong underlying demand for the connection.

The move underscores the growing importance of the Asia-Pacific region as a gateway to South American markets, particularly as geopolitical pressures and shipping disruptions continue to reshape global trade logistics.