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

Return flights

20 May - 03 Jun	Lufthansa
03 May - 14 May	KLM
28 May - 05 Jun	KLM
20 May - 06 Jun	Lufthansa
17 May - 29 May	KLM
06 May - 13 May	KLM
07 May - 13 May	KLM
03 May - 13 May	KLM
18 May - 02 Jun	British Airways
15 May - 06 Jun	KLM
17 May - 30 May	KLM
19 May - 16 Jun	KLM
18 May - 31 May	Lufthansa
20 May - 25 Jun	British Airways
15 May - 30 May	KLM
06 May - 19 May	KLM
21 May - 31 May	Lufthansa
21 May - 11 Jun	Lufthansa
28 May - 11 Jun	Lufthansa
26 May - 06 Jun	ITA Airways

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 837€

Return flights