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

Return flights

27 May - 10 Jun	KLM
20 May - 03 Jun	Lufthansa
17 May - 29 May	KLM
06 May - 13 May	KLM
17 May - 30 May	KLM
18 May - 31 May	Lufthansa
15 May - 30 May	KLM
04 May - 28 May	Lufthansa
06 May - 19 May	KLM
26 May - 06 Jun	ITA Airways
15 May - 29 May	KLM
11 May - 20 May	ITA Airways
20 May - 27 May	ITA Airways
25 May - 05 Jun	KLM
25 May - 10 Jun	KLM
19 May - 19 Jun	British Airways
29 May - 14 Jun	KLM
25 May - 01 Jun	Iberia
30 May - 06 Jun	KLM
27 May - 05 Jun	British 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 836€

Return flights