AirHint found the following cheapest one-way flights from London (LCY) to Buenos Aires (AEP) in December 2025 (see full year).
One-Way flights
| 03 Dec | SWISS | ||
| 09 Dec | SWISS | ||
| 02 Dec | ITA Airways | ||
| 11 Dec | SWISS | ||
| 29 Dec | KLM | ||
| 17 Dec | SWISS | ||
| 08 Dec | KLM | ||
| 05 Dec | KLM | ||
| 22 Dec | SWISS | ||
| 18 Dec | KLM |
Also check the deals for return flights from London to Buenos Aires in December.
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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.
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