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

Return flights

06 May - 28 May	Avianca
06 May - 19 May	Avianca
14 May - 28 May	Avianca
11 May - 22 May	Avianca
19 May - 09 Jun	SWISS
27 May - 01 Jun	KLM
25 May - 10 Jun	British Airways
21 May - 04 Jun	Air France
25 May - 05 Jun	Air France
01 May - 01 Jun	Air France
31 May - 09 Jun	British Airways
30 May - 08 Jun	British Airways
17 May - 02 Jun	Avianca
01 May - 29 May	Air France
05 May - 12 May	Avianca
29 May - 08 Jun	British Airways
26 May - 29 May	Air France
17 May - 26 May	Air France
11 May - 18 May	Air Canada
06 May - 13 May	Air Canada

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 711€

Return flights