SkyTeam member China Eastern is launching a new fifth freedom flight, which is also the world’s most southerly long haul route, to my knowledge.
In this post:
China Eastern plans fifth freedom Buenos Aires flights
As of December 2025, China Eastern plans to launch 2x weekly flights from Shanghai (PVG) to Auckland (AKL) to Buenos Aires (EZE), representing the carrier’s first route to South America.

In total, this route will cover a distance of 12,229 miles, with the Shanghai to Auckland sector covering 5,808 miles, and the Auckland to Buenos Aires sector covering 6,421 miles. The flight between New Zealand and Argentina will be a fifth freedom flight, meaning that it’ll be possible for passengers to exclusively travel between those two countries on China Eastern.
While the schedule hasn’t yet been published, China Eastern intends to use a Boeing 777-300ER for the route, with 316 seats. This includes six first class seats, 52 business class seats, and 258 economy seats.
When it launches, this should be the world’s most southerly long haul route. It’s slightly further south than Qantas’ Sydney (SYD) to Johannesburg (JNB) flight, Qantas’ Sydney (SYD) to Santiago (SCL) flight, and LATAM’s Auckland (AKL) to Santiago (SCL) flight.
This route announcement was made during a ceremony in Shanghai, where New Zealand Prime Minister Christopher Luxon was in attendance. Here’s what Luxon had to say about the new route:
“As a country we are working hard to grow tourism back to 2019 levels and beyond, because doing so will drive economic growth right across the country. This new route is estimated to bring an additional $48 million in annual visitor spend to New Zealand.”
Meanwhile here’s what Auckland Airport CEO Carrie Hurihanganui had to say:
“While we have rebuilt our aviation connections with China, visitation is still recovering. Additional flights from Shanghai Pudong, a major globally connected hub, supports more travellers not just direct from China but also those connecting via Shanghai from across Asia and Europe into Auckland.”
“This new service will reintroduce a direct flight connection between New Zealand and Argentina, enhancing not only tourism, trade and international education, but providing another link home for the 40,000 South Americans who live in New Zealand.”

How this fits into the competitive landscape
This isn’t the first time that we’ve seen service between Auckland and Buenos Aires. Air New Zealand operated this route from 2015 until 2020, though the service was cut at the start of the pandemic. Prior to that, Aerolineas Argentinas operated this route until 2012.
Obviously given China’s distance from South America, operating nonstop flights isn’t practical. China Eastern won’t be the only Chinese carrier to fly to South America. For example, Air China flies from Beijing (PEK) to Madrid (MAD) to Sao Paulo (GRU), but as you can tell, that route goes “the other way.”
Obviously Air New Zealand would have a significant advantage in this market, given connecting traffic in Auckland. However, Air New Zealand also has more opportunity cost with operating such a route.
Airlines from mainland China have kind of struggled post pandemic with international recovery. So I imagine this route is motivated by political factors, plus also serving a fifth freedom market that probably has a decent amount of demand, especially for filling just two flights per week.

Bottom line
As of December 2025, China Eastern is launching 2x weekly flights from Shanghai to Buenos Aires via Auckland, with that second sector being a fifth freedom service. This is a mighty long journey, and the world’s most southerly long haul flight, no less. This is one of two routes between New Zealand and South America, with the other being on LATAM.
What do you make of China Eastern’s new Buenos Aires flight?
Is this flight going to make this world-record breaking trip faster? https://onemileatatime.com/rtw-record/
This is about the most antipodal major city pair out there btw! Only 200 miles short of half the Equator’s length!
Don't really know where the connecting traffic is going to come from for this route. They don't have agreements with Air NZ/Jetstar to feed passengers from Auckland and they don't partner with any airlines that fly trans-tasman. I guess the only one would be their own SYD-AKL route they fly every odd day but they would have to line the schedules up nicely for the connection to not be immense.
Could be beneficial for...
Don't really know where the connecting traffic is going to come from for this route. They don't have agreements with Air NZ/Jetstar to feed passengers from Auckland and they don't partner with any airlines that fly trans-tasman. I guess the only one would be their own SYD-AKL route they fly every odd day but they would have to line the schedules up nicely for the connection to not be immense.
Could be beneficial for them to partner with Skyteam partner China Airlines that flies AKL-BNE and AKL-MEL seasonally
MU can feed herself as the incoming flights are from China. Though I am still skeptical about the routes design, anyone travel from Asia to South America has to go through a long journey anyway.
The flat-earthers will have trouble with this flight. It's technically impossible, according to them.
Here we are talking about fifth freedom flights, so LATAM flights to south America don't count.
As for CHC/SYD, Christchurch is much further south than SYD, MEL, or AKL.
Latam's SYD-SCL flies closer to Antarctica than the new China Eastern AKL-EZE route.
I believe Sydney to Santiago is the worlds most southerly route operated by Qantas in a 787
Actually I would stand corrected as I think it is EZE/AKL which was operated by Aerolineas Argentinas at one point
CHC/SYD on Emirates is further south than all other flights mentioned here.
SYD-SCL does seem to go further south when looking at the great circle route. However MEL-SCL, operated by LATAM, goes even further south:
http://www.gcmap.com/mapui?P=AKL-EZE%0D%0ASYD-SCL%0D%0AMEL-SCL&MS=wls&MP=r&DU=nm
I’m not quite sure what CHC-SYD has to do with the price of fish, but it doesn’t go as far south as any of these.