AirHint found the following cheapest return flights from London (LCY) to Buenos Aires (EZE) in March 2026 (see full year).

Return flights

13 Mar - 22 Mar	British Airways
08 Mar - 16 Mar	British Airways
25 Mar - 15 Apr	KLM
10 Mar - 19 Mar	British Airways
08 Mar - 19 Mar	British Airways
09 Mar - 17 Mar	ITA Airways
13 Mar - 28 Mar	SWISS
02 Mar - 17 Mar	ITA Airways
14 Mar - 28 Mar	KLM
02 Mar - 23 Mar	British Airways
02 Mar - 12 Mar	British Airways
20 Mar - 04 Apr	SWISS
22 Mar - 16 Apr	ITA Airways
27 Mar - 09 Apr	KLM
30 Mar - 13 Apr	KLM
28 Mar - 12 Apr	ITA Airways
28 Mar - 05 Apr	ITA Airways
28 Mar - 06 Apr	ITA Airways
21 Mar - 05 Apr	ITA Airways
28 Mar - 04 Apr	ITA Airways

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

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 March from $1354

Return flights