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

Return flights

13 May - 10 Jun	KLM
28 May - 07 Jun	British Airways
11 May - 30 Jun	KLM
05 May - 19 May	British Airways
19 May - 09 Jun	KLM
12 May - 20 May	SWISS
18 May - 27 May	ITA Airways
12 May - 21 May	British Airways
05 May - 26 May	British Airways
26 May - 04 Jun	British Airways
28 May - 06 Jun	British Airways
07 May - 04 Jun	KLM
04 May - 13 May	Lufthansa
04 May - 29 May	KLM
06 May - 28 May	KLM
01 May - 01 Jun	KLM
18 May - 28 May	Lufthansa
04 May - 17 May	KLM
29 May - 02 Jun	KLM
22 May - 01 Jun	SWISS

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

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 May from $1102

Return flights