Nagoya (NGO) to Buenos Aires (BUE): 11,568 miles (18,617 km) great-circle, about 23h 40m nonstop by our estimate. Cheapest fare observed: $1447 round-trip on Cathay Pacific, with 2 stops, departing June 10, 2026.
$1447 round-trip, Cathay Pacific CX539, departing 2026-06-10 at 16:10, returning 2026-06-18. The recorded itinerary left on a Wednesday, returning on a Thursday 8 nights later; the fare was observed 46 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $1447, it ranked 23rd of the 23 round-trip fares we recorded from NGO (median $680). That is 12.5 cents per great-circle mile (round-trip price over one-way distance), below the NGO median of 24.0 cents across 23 round-trip routes.
Routes from NGO of similar length: Sao Paulo (11,623 mi) at $1430 and Paris (5,997 mi) at $1216.
Cathay Pacific had the cheapest fare on 3 of 23 NGO routes. It is the 2nd longest of the 23 routes we track from NGO.
Of 14 departure airports with a fare to Buenos Aires, Nagoya (NGO) ranked 12th at $1447. Lowest: $251 from Rio de Janeiro (GIG); highest: $2255 from Addis Ababa (ADD); 5 nonstop. Cheapest-fare airlines (routes): Arajet (3), LATAM (2), Aeromexico (1), Air Canada (1), Avianca (1) and Cathay Pacific (1), plus 5 more.
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones Asia/Tokyo, America/Argentina/Buenos_Aires; flight time is our estimate.