The cheapest London Stansted to Buenos Aires return flight on the radar right now is £1,187, flying with Turkish Airlines + Copa via one or more connections. It covers departures in January 2027, and every dated link below opens that exact STN–EZE search on Skyscanner. The price we usually record on this route is £1,023. Across 81 recorded checks it has ranged between £821 and £1,387. Our sampling points to January 2027 as the cheapest month to fly London Stansted to Buenos Aires.
Every fare here is re-confirmed against Skyscanner automatically, and each one is stamped with the moment it was last checked, so you can see how fresh it is instead of taking it on trust. Not flying from London Stansted? We track 53 other departure cities for Buenos Aires, listed at the foot of this page.
Fares move quickly. If this London Stansted to Buenos Aires price has gone by the time you search, shift the dates a day or two either side, because the same route is often still cheap just next door.