Madrid (MAD) to Buenos Aires (BUE): 6,268 miles (10,087 km) great-circle, about 13h 00m nonstop by our estimate. Cheapest fare observed: $1193 round-trip on Turkish, with 1 stop, departing June 5, 2026.
$1193 round-trip, Turkish TK1860, departing 2026-06-05 at 18:25, returning 2026-06-21. The recorded itinerary left on a Friday, returning on a Sunday 16 nights later; the fare was observed 41 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $1193, it ranked 30th of the 30 round-trip fares we recorded from MAD (median $182). That is 19.0 cents per great-circle mile (round-trip price over one-way distance), close to the MAD median of 17.6 cents across 30 round-trip routes.
Routes from MAD of similar length: Lima (5,919 mi) at $1096 and Punta Cana (4,082 mi) at $682.
MAD to BUE is the only one of 30 MAD routes where Turkish priced cheapest. It is the longest of the 30 routes we track from MAD.
Of 14 departure airports with a fare to Buenos Aires, Madrid (MAD) ranked 11th at $1193. 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 Europe/Madrid, America/Argentina/Buenos_Aires; flight time is our estimate.