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

Return flights

31 Dec - 19 Jan	Iberia
04 Dec - 11 Dec	Norse Atlantic Airways (UK)
30 Dec - 26 Jan	Iberia
02 Dec - 10 Dec	easyJet
02 Dec - 05 Dec	easyJet
30 Dec - 19 Jan	Iberia
03 Dec - 07 Dec	easyJet
01 Dec - 10 Dec	Iberia
03 Dec - 16 Dec	Vueling Airlines
05 Dec - 12 Dec	Iberia
02 Dec - 11 Dec	Iberia
02 Dec - 15 Dec	Iberia
03 Dec - 06 Dec	Air Europa
11 Dec - 24 Jan	Wizz Air UK
25 Dec - 24 Jan	Vueling Airlines
29 Dec - 19 Jan	British Airways
29 Dec - 14 Jan	Air Europa
27 Dec - 16 Jan	Wizz Air UK
31 Dec - 17 Jan	Air Europa
31 Dec - 16 Jan	Air Europa

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 1004€

Return flights