AirHint found the following cheapest return flights from London (LTN) to Buenos Aires (EZE) in December 2025 (see full year).

Return flights

01 Dec - 09 Dec	easyJet
03 Dec - 10 Dec	Wizz Air Malta
01 Dec - 11 Dec	Wizz Air Malta
11 Dec - 21 Dec	easyJet
05 Dec - 14 Dec	Wizz Air Malta
01 Dec - 10 Dec	easyJet
06 Dec - 31 Dec	easyJet
11 Dec - 20 Dec	easyJet
03 Dec - 08 Dec	easyJet
17 Dec - 27 Dec	Wizz Air UK
05 Dec - 24 Jan	easyJet
23 Dec - 01 Jan	easyJet
31 Dec - 24 Jan	easyJet
29 Dec - 07 Jan	easyJet
08 Dec - 20 Jan	easyJet
23 Dec - 02 Jan	easyJet
15 Dec - 20 Jan	Ryanair
28 Dec - 01 Jan	easyJet
05 Dec - 15 Jan	easyJet
04 Dec - 11 Jan	Wizz Air Malta

Also check the deals for one-way flights from London to Buenos Aires in December.

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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Cheapest return flights from London to Buenos Aires in December from $1202

Return flights