Cape Town (CPT) to Buenos Aires (BUE): 4,279 miles (6,886 km) great-circle, about 9h 05m nonstop by our estimate. Cheapest fare observed: $1454 round-trip on TAAG Angola Airlines, with 2 stops, departing May 12, 2026.
$1454 round-trip, TAAG Angola Airlines DT580, departing 2026-05-12 at 15:05, returning 2026-05-31. The recorded itinerary left on a Tuesday, returning on a Sunday 19 nights later; the fare was observed 17 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $1454, it ranked 29th of the 30 round-trip fares we recorded from CPT (median $794). That is 34.0 cents per great-circle mile (round-trip price over one-way distance), above the CPT median of 28.3 cents across 30 round-trip routes.
Routes from CPT of similar length: Malé (4,439 mi) at $1167 and Sao Paulo (3,947 mi) at $811.
TAAG Angola Airlines had the cheapest fare on 2 of 30 CPT routes. It is the 15th longest of the 30 routes we track from CPT.
Of 14 departure airports with a fare to Buenos Aires, Cape Town (CPT) ranked 13th at $1454. 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 Africa/Johannesburg, America/Argentina/Buenos_Aires; flight time is our estimate.